WO2016052934A1 - 애노드, 이를 포함하는 리튬 이차 전지, 상기 리튬 이차 전지를 포함하는 전지 모듈 및 애노드의 제조방법 - Google Patents
애노드, 이를 포함하는 리튬 이차 전지, 상기 리튬 이차 전지를 포함하는 전지 모듈 및 애노드의 제조방법 Download PDFInfo
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- WO2016052934A1 WO2016052934A1 PCT/KR2015/010119 KR2015010119W WO2016052934A1 WO 2016052934 A1 WO2016052934 A1 WO 2016052934A1 KR 2015010119 W KR2015010119 W KR 2015010119W WO 2016052934 A1 WO2016052934 A1 WO 2016052934A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/808—Foamed, spongy materials
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to the Korean Patent Application No. 10-2014-0130621 filed with the Korean Patent Office on September 29, 2014 and the Korean Patent Application No. 10-2014-0130619 filed on September 29, 2014 to the Korean Patent Office. Claiming benefit, the entire contents of which are incorporated herein by reference.
- the present specification relates to an anode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method of manufacturing the anode.
- Lithium secondary batteries have been put to practical use as small, light weight and high capacity rechargeable batteries, and are used in portable electronic devices and communication devices such as small video cameras, mobile phones, and notebook computers.
- Lithium secondary batteries are energy storage devices having high energy and power, and have an advantage of higher capacity and operating voltage than other batteries.
- a high energy is a problem of the safety of the battery has a risk of explosion or fire.
- such a hybrid car has been in the spotlight, so high energy and output characteristics are required such safety can be seen more important.
- a lithium secondary battery is composed of a cathode, an anode, and an electrolyte, and transfers energy while reciprocating both electrodes such that lithium ions from the cathode active material are inserted into the anode active material, ie, carbon particles, and desorbed upon discharge by the first charge. Since it plays a role, it becomes possible to charge and discharge.
- the present specification provides an anode, a lithium secondary battery including the same, a battery module including the lithium secondary battery, and a method of manufacturing the anode.
- first anode comprising a lithium metal layer; And a second anode comprising a porous current collector and silicon or silicon oxide, carbon, and a binder resin provided in pores of the porous current collector, wherein the first anode and the second anode are electrically connected to each other.
- first anode and the second anode are electrically connected to each other.
- first anode including a lithium metal layer
- second anode comprising a porous current collector and a lithium-silicon composite or a lithium-silicon oxide composite, carbon and a binder resin provided in pores of the porous current collector, wherein the first anode and the second anode It provides an anode that is electrically connected to each other.
- the present specification is a porous current collector is provided with silicon or silicon oxide, carbon and binder resin in the pores; And it provides an anode comprising a lithium metal layer provided on the surface of one side of the porous current collector and the inside of the pores.
- porous current collector is provided with silicon, lithium-silicon composite, carbon and binder resin in the pores; Or it provides an anode comprising a porous current collector is provided with silicon oxide, lithium-silicon oxide composite, carbon and binder resin in the pores.
- the present specification provides a lithium secondary battery including the anode and the cathode, and including an electrolyte provided between the anode and the cathode.
- the present disclosure provides a battery module including the lithium secondary battery as a unit cell.
- the present specification comprises the steps of preparing a first anode comprising a lithium metal layer; Preparing a second anode including silicon or silicon oxide, carbon, and a binder resin provided in pores of the porous current collector; And it provides an anode manufacturing method comprising the step of electrically connecting the first anode and the second anode.
- the anode according to one embodiment of the present specification improves the chemical stability and safety of lithium metal.
- FIG. 1 is a structural diagram of a battery including an anode according to a first exemplary embodiment of the present specification.
- FIG. 2 illustrates the movement of lithium ions in a battery including an anode according to a second exemplary embodiment of the present specification.
- FIG. 3 is a structural diagram of a battery including an anode according to a third exemplary embodiment of the present specification.
- FIG. 4 is a capacity retention graph according to the number of charge and discharge cycles of Example 1 and Comparative Examples 1 and 2.
- FIG. 4 is a capacity retention graph according to the number of charge and discharge cycles of Example 1 and Comparative Examples 1 and 2.
- FIG 5 is a perspective view of an anode according to a fourth exemplary embodiment of the present specification.
- FIG. 6 is a perspective view of an anode according to a fifth exemplary embodiment of the present specification.
- FIG. 7 is a cross-sectional view of the anode according to the sixth exemplary embodiment of the present specification.
- FIG 8 is a cross-sectional view of the anode according to the seventh exemplary embodiment of the present specification.
- FIG. 9 is a capacity maintenance rate graph according to the number of charge and discharge cycles of Example 2 and Comparative Examples 1 and 2.
- FIG. 9 is a capacity maintenance rate graph according to the number of charge and discharge cycles of Example 2 and Comparative Examples 1 and 2.
- first anode comprising a lithium metal layer
- second anode comprising a metal layer or a metal oxide layer containing a metal capable of alloying with lithium, wherein the first anode and the second anode are electrically connected to each other.
- the electrically connected first anode and the second anode may be connected in series or in parallel. Specifically, the first anode and the second anode are preferably connected in parallel.
- the thickness of the anode may be 1 micrometer or more and 1,000 micrometers or less. In this case, the thickness of the anode means the sum of the thicknesses of the first anode and the second anode.
- the anode may be used in a battery, and the anode means an electrode which emits electrons when the battery is discharged.
- the anode may be used in a secondary battery, and the anode may refer to an electrode that emits electrons based on discharge of the battery, and may serve as a cathode (reduction electrode) when charging the battery.
- the first anode may include a lithium metal layer, and the lithium metal layer means an electrode including a lithium metal element.
- the material of the lithium metal layer may be lithium alloy, lithium metal, oxide of lithium alloy or lithium oxide.
- the lithium metal layer may be a layer composed only of lithium metal.
- a part of the lithium metal layer may be altered by oxygen or moisture or include impurities.
- the first anode may include a current collector provided on one surface of the lithium metal layer, or may not include a current collector.
- the current collector 22 may be located on a side opposite to the side where the second anode 23 is provided.
- the current collector may be any material having electrical conductivity as the current collector of the anode, and may be manufactured using materials and methods generally used in the art. For example, one, two or more selected from the group consisting of carbon, stainless, nickel, aluminum, iron, and titanium may be used.
- the shape of the current collector may be various forms such as a film, a sheet, a foil, a net, a porous body, a foam, or a nonwoven fabric, respectively.
- the second anode may include a metal layer or a metal oxide layer containing a metal or metal oxide capable of alloying with lithium.
- the metal layer or metal oxide layer may contain a metal that expands in volume by reacting with lithium.
- the metal layer may be a layer containing a metal capable of alloying with lithium
- the metal oxide layer may be a layer containing a metal oxide capable of alloying with lithium
- the metal contained in the metal layer or the metal oxide layer is not particularly limited as long as the metal is alloyable with lithium.
- the metal oxide is not particularly limited as long as the metal oxide contains at least one of silicon (Si), tin (Sn), germanium (Ge), and cobalt (Co).
- the metal layer or the metal oxide layer is any one of silicon, tin and germanium; Two or more alloys; Or at least one oxide.
- the metal layer or the metal oxide layer may be a silicon layer or a silicon oxide layer containing a silicon element as a metal capable of alloying with the lithium.
- the silicon layer may be formed by depositing silicon or by depositing or applying a silane compound to form a layer and reducing the same.
- the silane-based compound may include an organic compound in which silicon hydride (Si n H 2n +2 ) and hydrogen atoms of the silicon hydride are substituted with a hydrocarbon group, a halogen group, an alkoxy group, a hydroxy group, and the like.
- Chlorosilane, dichlorosilane, trichlorosilane, tetraalkylsilane, chlorotrialkylsilane, dichlorodialkylsilane and trichloroalkylsilane may include, but are not limited to.
- the second anode may include a metal or metal oxide capable of alloying with lithium provided in the pores of the porous current collector and the porous current collector.
- the second anode 23 may include a porous current collector 24, and a metal or metal oxide capable of alloying with lithium may be provided in the pores of the porous current collector.
- the metal or metal oxide capable of alloying with lithium is silicon or silicon oxide containing a silicon element as a metal capable of alloying with lithium
- the second anode is provided inside the pores of the porous current collector and the porous current collector. It may include silicon or silicon oxide.
- the second anode may further include carbon and a binder resin.
- the second anode may include a porous current collector, and silicon or silicon oxide, carbon, and a binder resin provided in pores of the porous current collector.
- the method of manufacturing the second anode may impregnate the composition of silicon or silicon oxide in the pores of the porous current collector.
- the composition may include silicon or silicon oxide, carbon, a binder resin and a solvent.
- the type of carbon, binder resin, and solvent is not particularly limited, but those commonly used in the art may be employed.
- the binder resin may include polyvinylidene fluoride (PVdF), and the carbon is selected from the group consisting of graphene, graphite, carbon black, carbon nanotubes, carbon fibers and activated carbon. It may be one or two or more.
- Carbon black may be acetylene black, denka black, ketjen black or carbon black.
- the content of the silicon or silicon oxide is 50% by weight or more and 90% by weight or less
- the carbon content is 1% by weight or more and 40% by weight or less
- the content of the binder resin is 1 It may be at least 20% by weight.
- lithium ions transferred from the first anode 21 may be alloyed with lithium of the second anode 23. Reaction with the metal may form a lithium-metal composite or may be passed through the second anode 23 to the electrolyte and the cathode 10.
- the content of the lithium-metal composite formed by alloying the metal or metal oxide with lithium may be influenced by the content of the metal or metal oxide capable of alloying with lithium. Some or all of the metal or metal oxide that is alloyable with lithium included in the anode may be alloyed with lithium to form a lithium-metal composite.
- the metal layer or the metal oxide layer is a silicon layer or a silicon oxide layer containing a silicon element as a metal or metal oxide capable of alloying with the lithium, the lithium element of the first anode and the silicon of the second anode in the anode
- the weight ratio of the elements may be 10 to 130: 100.
- the content of the lithium-silicon composite or the lithium-silicon oxide composite formed by alloying the silicon or silicon oxide with lithium may be affected. Some or all of the silicon contained in the anode may be alloyed with lithium to form a lithium-silicon composite or a lithium-silicon oxide composite.
- the second anode may further include a lithium-silicon composite or a lithium-silicon oxide composite.
- the second anode may further include a lithium-silicon composite or a lithium-silicon oxide composite provided in pores of the porous current collector.
- the lithium-silicon composite may be represented by the following Chemical Formula 1
- the lithium-silicon oxide composite may be represented by the following Chemical Formula 2.
- x is a real number of 1.0 to 4.0
- o is a real number of 0.3 to 4.0
- p is a real number of 0.1 to 2.0, respectively.
- the porous current collector may be any material having electrical conductivity as the current collector of the anode, and may be manufactured using materials and methods generally used in the art. For example, one, two or more selected from the group consisting of carbon, stainless, nickel, aluminum, iron, and titanium may be used.
- the porous current collector may be a porous metal foam.
- first anode comprising a lithium metal layer
- second anode including a lithium-metal composite layer containing a lithium-metal composite or a lithium-metal oxide composite alloyed with lithium, wherein the metal or metal oxide capable of alloying with lithium comprises: the first anode and the first anode;
- the two anodes provide the anodes which are electrically connected to each other.
- the lithium-metal composite layer may be a lithium-silicon composite layer containing a silicon element as a metal or metal oxide capable of alloying with lithium.
- the lithium-silicon composite layer may include a lithium-silicon composite or a lithium-silicon oxide composite.
- the lithium-silicon composite layer may include a lithium-silicon composite represented by the following Chemical Formula 1 or a lithium-silicon oxide composite represented by the following Chemical Formula 2.
- x is a real number of 1.0 to 4.0
- o is a real number of 0.3 to 4.0
- p is a real number of 0.1 to 2.0, respectively.
- first anode comprising a lithium metal layer
- second anode comprising a porous current collector and a lithium-silicon composite or a lithium-silicon oxide composite, carbon and a binder resin provided in pores of the porous current collector, wherein the first anode and the second anode It provides an anode that is electrically connected to each other.
- the lithium-silicon composite layer may include a lithium-silicon composite represented by Chemical Formula 1 or a lithium-silicon oxide composite represented by Chemical Formula 2.
- the method may further include an anode separator provided between the first anode and the second anode.
- the anode separator may employ a separator commonly used in the art, and may be, for example, a non-conductive porous membrane or an insulating porous membrane.
- the anode may further include a connection unit for connecting the first anode and the second anode in series or in parallel.
- the connection part may be a conductive wire that can electrically connect the first first anode and the second anode in the battery, and the material of the connection part is not limited as long as the current can pass, and generally in the art The material to be used can be selected.
- connection unit may connect the first anode and the second anode in parallel in the battery.
- connection part 40 may connect the first anode 21 and the second anode 23 in parallel, but is not limited thereto.
- lithium metal is a material having high reactivity with moisture
- the surface of the lithium metal electrode may be altered or dendritic crystals may be formed on the surface of the lithium metal electrode by reacting with moisture.
- the anode of the present specification has an advantage that the chemical safety and stability of the lithium metal of the lithium metal electrode, which is the first anode, is improved by including the second anode.
- a porous current collector including a metal or metal oxide containing a metal capable of alloying with lithium provided in the pores; And it provides an anode comprising a lithium metal layer provided on the surface of one side of the porous current collector and the inside of the pores.
- the present specification is a porous current collector; A lithium metal layer provided in the pores on one side of the porous current collector; And it provides an anode comprising a metal layer or a metal oxide layer containing a metal capable of alloying with lithium provided in the pores on the other side of the porous current collector.
- the anode 400 is provided in the pores of one side of the porous current collector 100 and includes a lithium metal layer 200 containing lithium metal 250 and the other side of the porous current collector. It may include a metal layer or metal oxide layer 300 containing a metal 350 capable of alloying with lithium provided in the pores.
- the thickness of the anode may be 1 micrometer or more and 1,000 micrometers or less. At this time, the thickness of the porous current collector determines the thickness of the anode, the thickness of the porous current collector may be the same as the thickness of the anode.
- the porous current collector is not particularly limited as long as it is a substrate having pores and a current-carrying conductor, and those generally used in the art may be selected.
- the porous current collector may include at least one of a conductive polymer, a metal, a metal oxide, carbon fiber, carbon black, kappa, and carbon nanotubes.
- the porosity of the porous current collector is not particularly limited, and may have a porosity of the porous current collector generally used in the art.
- the lithium metal layer may include a lithium-metal composite in which a lithium element of the lithium metal layer and a metal element capable of alloying with lithium of the metal layer or the metal oxide layer are combined.
- the metal layer or the metal oxide layer is a silicon layer containing a silicon element as a metal capable of alloying with the lithium
- the lithium metal layer is a lithium element of the lithium metal layer and a silicon element of the silicon layer is bonded It may comprise a lithium-silicon composite.
- the metal layer or the metal oxide layer may be a layer containing a metal capable of alloying with lithium.
- the metal layer or metal oxide layer may contain a metal that expands in volume by reacting with lithium.
- the metal layer may be a layer containing a metal capable of alloying with lithium.
- the metal layer may be a layer made of only metal capable of alloying with lithium.
- the metal oxide layer may be a layer containing a metal oxide capable of alloying with lithium.
- the metal oxide layer may be a layer made of only an oxide of a metal capable of alloying with lithium.
- the metal contained in the metal layer or the metal oxide layer is not particularly limited as long as it can be alloyed with lithium.
- the metal oxide is not particularly limited as long as the metal oxide contains at least one of silicon (Si), tin (Sn), germanium (Ge), and cobalt (Co).
- the metal layer or the metal oxide layer is any one of silicon, tin and germanium; Two or more alloys; Or at least one oxide.
- the metal layer or metal oxide layer may include a lithium-metal composite in which a lithium element of the lithium metal layer and a metal element capable of alloying with lithium of the metal layer or metal oxide layer are combined.
- the metal layer or the metal oxide layer may be a silicon layer or a silicon oxide layer containing a silicon element as a metal capable of alloying with the lithium.
- the silicon layer or silicon oxide layer means a layer made of a silicon element or a layer made of an oxide of a silicon element.
- the metal layer or the metal oxide layer is a silicon layer or a silicon oxide layer containing a silicon element as a metal capable of alloying with the lithium
- the silicon layer or the silicon oxide layer is the lithium element of the lithium metal layer and the It may include a lithium-silicon composite or a lithium-silicon oxide composite bonded to the silicon element of the silicon layer.
- the content of the lithium-metal composite formed by alloying the metal or metal oxide with lithium may be influenced by the content of the metal or metal oxide capable of alloying with lithium. Some or all of the metal or metal oxide that is alloyable with lithium included in the anode may be alloyed with lithium to form a lithium-metal composite or a lithium-metal oxide composite. Lithium, which forms a lithium-metal composite or a lithium-metal oxide composite in the anode, has an advantage of high stability.
- the weight ratio of the lithium and the silicon in the anode may be 10 to 100: 100.
- the content of the lithium-silicon composite formed by alloying the silicon with lithium may be affected by the content of the silicon element.
- Some or all of the silicon elements included in the anode may be alloyed with lithium to form a lithium-silicon composite or a lithium-silicon oxide composite.
- the pores of the porous current collector may further include a lithium-metal composite layer provided between the lithium metal layer and the metal layer or metal oxide layer.
- the lithium-metal composite layer may be a lithium-metal composite or a lithium-metal oxide composite in which a lithium metal element of a lithium metal layer and a metal element of a metal layer or a metal oxide layer are formed at an interface between the lithium metal layer and the metal layer or metal oxide layer. It may include.
- the anode 400 includes a lithium-metal composite layer provided between the lithium metal layer 200 and the metal layer or the metal oxide layer 300 in the pores of the porous current collector 100. 500) may be further included.
- the lithium-metal composite layer 500 is a lithium metal 250 element and a metal layer or metal oxide layer 300 of the lithium metal layer 200 at the interface between the lithium metal layer 200 and the metal layer or metal oxide layer 300.
- the metal 350 of the element may include a lithium-metal composite or a lithium-metal oxide composite 550 formed by meeting.
- the metal layer or the metal oxide layer is a silicon layer or a silicon oxide layer containing a silicon element as a metal capable of alloying with the lithium, the lithium metal layer and the pores of the porous current collector It may further include a lithium-silicon composite layer provided between the silicon layer or silicon oxide layer.
- the lithium-silicon composite layer may include a lithium-silicon composite or a lithium-silicon oxide composite.
- the lithium-silicon composite layer may include a lithium-silicon composite represented by the following Chemical Formula 1 or a lithium-silicon oxide composite represented by the following Chemical Formula 2.
- x is a real number of 1.0 to 4.0
- o is a real number of 0.3 to 4.0
- p is a real number of 0.1 to 2.0, respectively.
- the anode is a porous current collector is provided with silicon or silicon oxide, carbon and binder resin in the pores; And a lithium metal layer provided on one surface of the porous current collector and inside the pores.
- the binder resin may include polyvinylidene fluoride (PVdF).
- a porous current collector a lithium-metal composite layer containing a lithium-metal composite alloyed with lithium in a metal or metal oxide capable of alloying with lithium inside the pores of the porous current collector.
- the anode may be made of a lithium-metal composite layer provided in the pores of the porous current collector.
- the anode 400 is a lithium-metal composite layer in which the entire interior of the pores of the porous current collector 100 includes a lithium-metal composite or a lithium-metal oxide composite 550. It may be made.
- lithium metal of the lithium metal layer is less than or equal to the weight of the metal capable of alloying with lithium of the metal layer or the metal oxide layer, all of the lithium metal of the lithium metal layer is alloyable with lithium of the metal layer or the metal oxide layer. It can be combined with an element to form a lithium-metal composite layer.
- the lithium-metal composite layer may be a lithium-silicon composite layer containing a silicon element as a metal or metal oxide capable of alloying with lithium.
- the anode may be a silicon electrode or a silicon composite electrode in which all of the lithium metal of the lithium metal layer is lost and the lithium-silicon composite and the remaining silicon or silicon oxide serve as the anode.
- the anode may include a porous current collector provided with silicon, lithium-silicon composite, carbon, and a binder resin in the pores.
- the anode may include a porous current collector provided with silicon oxide, lithium-silicon oxide composite, carbon, and a binder resin in the pores.
- the present specification provides a lithium secondary battery including the anode and the cathode, and including an electrolyte provided between the anode and the cathode.
- the shape of the lithium secondary battery is not limited, and may be, for example, coin type, flat plate type, cylindrical type, horn type, button type, sheet type, or stacked type.
- the lithium secondary battery may be a lithium air battery.
- the cathode of the lithium secondary battery may be an air electrode.
- the lithium secondary battery may further include a tank for storing a cathode electrolyte and an anode electrolyte, and a pump for moving each electrolyte to an electrode cell, thereby manufacturing a flow battery.
- the electrolyte may be an electrolyte solution in which the anode and the cathode are impregnated.
- the lithium secondary battery may further include a separator provided between the anode and the cathode.
- the separator located between the anode and the cathode may be used as long as it separates or insulates the anode and the cathode from each other and enables ion transport between the anode and the cathode.
- it may be a non-conductive porous membrane or an insulating porous membrane. More specifically, nonwoven fabrics such as polypropylene nonwoven fabric or polyphenylene sulfide nonwoven fabric; Or the porous film of olefin resin, such as polyethylene and a polypropylene, can be illustrated, It is also possible to use these 2 or more types together.
- the lithium secondary battery may further include a cathode electrolyte on the cathode side and an anode electrolyte on the anode side separated by a separator.
- the cathode electrolyte and the anode electrolyte may each include a solvent and an electrolyte salt.
- the cathode electrolyte and the anode electrolyte may include the same or different solvents.
- the electrolyte solution may be an aqueous electrolyte solution or a non-aqueous electrolyte solution.
- the aqueous electrolyte may include water as a solvent
- the non-aqueous electrolyte may include a non-aqueous solvent as a solvent.
- the non-aqueous solvent may be selected generally used in the art, and is not particularly limited, for example, carbonate-based, ester-based, ether-based, ketone-based, organosulfur-based, organophosphorous ), Aprotic solvents, and combinations thereof.
- the electrolytic salt refers to dissociation into cations and anions in water or a non-aqueous organic solvent, and is not particularly limited as long as it can transfer lithium ions in a lithium secondary battery, and may be generally used in the art.
- the concentration of the electrolyte salt in the electrolyte solution may be 0.1 M or more and 3 M or less. In this case, the charge and discharge characteristics of the lithium secondary battery may be effectively expressed.
- the electrolyte may be a solid electrolyte membrane or a polymer electrolyte membrane.
- the material of the solid electrolyte membrane and the polymer electrolyte membrane is not particularly limited, and those generally used in the art may be employed.
- the solid electrolyte membrane may include a composite metal oxide
- the polymer electrolyte membrane may be a membrane having a conductive polymer inside the porous substrate.
- the cathode refers to an electrode that accepts electrons and reduces lithium-containing ions when the battery is discharged in a lithium secondary battery. On the contrary, when the battery is charged, the cathode active material is oxidized to emit electrons and lose lithium-containing ions.
- the cathode may include a cathode current collector and a cathode active material layer formed on the cathode current collector.
- the material of the cathode active material of the cathode active material layer is not particularly limited as long as it is applied to a lithium secondary battery together with the anode to reduce lithium-containing ions during discharge and to be oxidized during charging.
- the present specification provides a battery module including the lithium secondary battery as a unit cell.
- the battery module may be formed by stacking a bipolar plate provided between two or more lithium secondary batteries according to one embodiment of the present specification.
- the bipolar plate may be porous to supply air supplied from the outside to the cathode included in each of the lithium air batteries.
- it may comprise porous stainless steel or porous ceramics.
- the battery module may be used as a power source for an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device.
- a step of preparing a first anode comprising a lithium metal layer Preparing a second anode including a metal layer or a metal oxide layer containing a metal capable of alloying with lithium; And it provides a method for producing an anode comprising the step of electrically connecting the first anode and the second anode.
- the preparing of the second anode may include impregnating a composition including a metal capable of alloying with lithium in the pores of the porous current collector.
- the preparing of the second anode may further include drying the porous current collector impregnated with the composition.
- the preparing of the second anode may include impregnating a silane-based compound into the pores of the porous current collector; And reducing the silane compound to form a silicon layer.
- the silane-based compound may include silicon hydride (Si n H 2n +2 ) and an organic compound in which a hydrogen atom of the silicon hydride is substituted with a hydrocarbon group, a halogen group, an alkoxy group, a hydroxy group, and the like, for example, silane, chloro It may include, but is not limited to, at least one of silane, dichlorosilane, trichlorosilane, tetraalkylsilane, chlorotrialkylsilane, dichlorodialkylsilane, and trichloroalkylsilane.
- the hydrocarbon group is a functional group of an organic compound consisting of only carbon and hydrogen, and the hydrocarbon group is any one or two of linear or branched alkyl, alkenyl, fluorene, cycloalkyl and aryl groups. The group mentioned above may be connected.
- the halogen group may be fluorine, chlorine, bromine, iodine or the like, but is not limited thereto.
- the alkoxy group preferably has 1 to 12 carbon atoms, more specifically methoxy, ethoxy, isopropyloxy, and the like, but is not limited thereto.
- the alkyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 1 to 12. Specific examples include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl, heptyl, and the like.
- the alkenyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 2 to 12. Specific examples thereof include butenyl group; Pentenyl group; Or alkenyl group, such as a stilbenyl group (stylbenyl), styrenyl group (styrenyl) is connected, but is not limited thereto.
- the fluorenyl group is a structure in which two ring organic compounds are connected through one atom, for example Etc.
- the fluorenyl group includes a structure of an open fluorenyl group, wherein the open fluorenyl group is a structure in which one ring compound is disconnected in a structure in which two ring compounds are connected through one atom, For example Etc.
- the cycloalkyl group may be monocyclic or polycyclic, and the number of carbon atoms is not particularly limited, but is preferably 6 to 40. Specific examples include, but are not limited to, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, and the like.
- the aryl group may be monocyclic or polycyclic, and the carbon number is not particularly limited, but is preferably 6 to 40.
- the monocyclic aryl group include phenyl group, biphenyl group, terphenyl group, stilbene, and the like.
- the polycyclic aryl group include naphthyl group, anthracenyl group, phenanthrene group, pyrenyl group, perrylenyl group, and cryo. Although a cenyl group, a fluorene group, etc. are mentioned, It is not limited to this.
- the preparing of the second anode may include impregnating a composition including silicon or silicon oxide in the pores of the porous current collector.
- the preparing of the second anode may include impregnating a composition including silicon or silicon oxide, carbon, and a binder resin in the pores of the porous current collector.
- the preparing of the second anode may further include drying the porous current collector impregnated with the composition.
- the electrically connecting the first anode and the second anode may be a step of electrically connecting the first anode and the second anode in series or in parallel.
- the step of electrically connecting the first anode and the second anode may be a step of electrically connecting the first anode and the second anode by using a connection portion connected in series or in parallel.
- the step of electrically connecting the first anode and the second anode may be a step of connecting the first anode and the second anode in parallel.
- the step of electrically connecting the first anode and the second anode may be a step of electrically connecting the first anode and the second anode using a connecting portion connected in parallel.
- the manufacturing method of the anode may further comprise the step of further comprising an anode separator between the first anode and the second anode.
- the description of the first anode, the second anode, the connecting portion and the anode separation membrane may be cited above.
- a step of impregnating a composition comprising a metal or metal oxide containing a metal capable of alloying with lithium in the porous current collector; And it provides a method for producing an anode comprising the step of applying a lithium metal on one surface of the porous current collector impregnated with the composition.
- a step of impregnating a composition comprising silicon or silicon oxide in the porous current collector provides a method for producing an anode comprising the step of applying a lithium metal on one surface of the porous current collector impregnated with the composition.
- the composition may further include at least one of a binder resin, a conductive material and a solvent.
- the binder resin may include polyvinylidene fluoride (PVdF).
- the conductive material is not particularly limited to a material having conductivity, but may be, for example, carbon.
- the carbon may be one or two or more selected from the group consisting of graphene, graphite, carbon black, carbon nanotubes, carbon fibers, and activated carbon.
- Carbon black may be acetylene black, denka black, ketjen black or carbon black.
- the content of the metal or metal oxide containing the metal capable of alloying with lithium is 50% by weight or more and 90% by weight or less, and the carbon content is 1% by weight or more and 40% by weight or less
- the content of the binder resin may be 1 wt% or more and 20 wt% or less.
- the content of the silicon or silicon oxide is 50% by weight or more and 90% by weight or less
- the carbon content is 1% by weight or more and 40% by weight or less
- the content of the binder resin is 1 It may be at least 20% by weight.
- Lithium metal is a metal that is not high in strength at room temperature, and when applied with a slight pressure on one surface of the porous current collector, some or all of the lithium metal may enter the pores of the porous current collector. Even if some of the lithium metal enters the pores in the lithium metal application step, all of the lithium metal may enter the pores of the porous current collector over time.
- a portion of the lithium metal may enter the pores of the porous current collector 100 in the applying step of the lithium metal 250.
- all of the lithium metal 250 enters the pores of the porous current collector in the applying step of the lithium metal, or as shown in FIG. 7, the lithium metal ( Even if some of the 250 enters the pores, all of the lithium metal 250 may enter the pores of the porous current collector 100 over time.
- the type of the binder and the conductive material is not particularly limited, and those generally used in the art may be selected.
- the description of the metal or metal oxide containing the porous current collector, lithium metal and metal capable of alloying with lithium can be cited above.
- the cathode was prepared by applying a composition having a weight ratio of LiCoO 2 (LCO), denca black, and PVdF to 95: 2.5: 2.5, respectively, on an aluminum foil (thickness: 15 mu m) as a current collector.
- LCO LiCoO 2
- denca black denca black
- PVdF PVdF
- a lithium foil having a thickness of 40 ⁇ m was used as the first anode.
- a second anode was prepared by impregnating a copper foam (thickness: 300 ⁇ m) with a composition having a weight ratio of SiO, denka black, and PVdF of 70:20:10, respectively.
- a battery cell was prepared using the carbonate-based electrolyte solution containing the cathode, the first and second anodes, and Li salt.
- the cathode was prepared by applying a composition having a weight ratio of LiCoO 2 (LCO), denca black, and PVdF to 95: 2.5: 2.5, respectively, on an aluminum foil (thickness: 15 mu m) as a current collector.
- LCO LiCoO 2
- denca black denca black
- PVdF PVdF
- a copper foam (thickness: 300 ⁇ m) was impregnated with a composition having a weight ratio of SiO, denka black, and PVdF of 70:20:10, respectively, and then a lithium metal layer of 40 ⁇ m on one surface was formed by a roll press process. An anode was prepared.
- a battery cell was prepared using the carbonate-based electrolyte solution containing Li salt and the cathode and the anode.
- a battery cell was prepared using only the first anode of Example 1 as the anode.
- a battery cell was prepared using only the second anode of Example 1 as the anode.
- the battery cells of Examples 1 and 2 and Comparative Examples 1 and 2 were charged and discharged 150 times under the following charge and discharge conditions, respectively, and the charge and discharge cycle characteristics of the battery were measured according to the number of charge and discharge cycles. The results are shown in FIGS. 4 and 9.
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Abstract
Description
Claims (23)
- 리튬금속층을 포함하는 제1 애노드; 및다공성 집전체, 및 상기 다공성 집전체의 기공 내에 구비된 실리콘 또는 실리콘 옥사이드, 카본 및 바인더 수지를 포함하는 제2 애노드를 포함하고,상기 제1 애노드와 상기 제2 애노드는 전기적으로 서로 연결된 것인 애노드.
- 청구항 1에 있어서, 상기 제1 애노드의 리튬 원소와 상기 제2 애노드의 규소 원소의 중량비는 10 내지 130: 100인 것인 애노드.
- 청구항 1에 있어서, 상기 제2 애노드는 상기 다공성 집전체의 기공 내에 구비된 리튬-실리콘 복합체 또는 리튬-실리콘옥사이드 복합체를 더 포함하는 것인 애노드.
- 청구항 3에 있어서, 상기 리튬-실리콘 복합체는 하기 화학식 1로 표시되며, 상기 리튬-실리콘옥사이드 복합체는 하기 화학식 2로 표시되는 것인 애노드:[화학식 1]LixSi[화학식 2]LioSiOp상기 화학식 1 및 2에서, x는 1.0 내지 4.0인 실수이고, o는 각각 0.3 내지 4.0인 실수이며, p는 각각 0.1 내지 2.0인 실수이다.
- 청구항 1에 있어서, 상기 제1 애노드 및 제2 애노드 사이에 구비된 애노드 분리막을 더 포함하는 것인 애노드.
- 리튬금속층을 포함하는 제1 애노드; 및다공성 집전체, 및 상기 다공성 집전체의 기공 내에 구비된 리튬-실리콘 복합체 또는 리튬-실리콘옥사이드 복합체, 카본 및 바인더 수지를 포함하는 제2 애노드를 포함하고,상기 제1 애노드와 상기 제2 애노드는 전기적으로 서로 연결된 것인 애노드.
- 청구항 6에 있어서, 상기 리튬-실리콘 복합체는 하기 화학식 1로 표시되며, 상기 리튬-실리콘옥사이드 복합체는 하기 화학식 2로 표시되는 것인 애노드:[화학식 1]LixSi[화학식 2]LioSiOp상기 화학식 1 및 2에서, x는 1.0 내지 4.0인 실수이고, o는 각각 0.3 내지 4.0인 실수이며, p는 각각 0.1 내지 2.0인 실수이다.
- 청구항 6에 있어서, 상기 제1 애노드 및 제2 애노드 사이에 구비된 애노드 분리막을 더 포함하는 것인 애노드.
- 기공 내에 실리콘 또는 실리콘 옥사이드, 카본 및 바인더 수지가 구비된 다공성 집전체; 및상기 다공성 집전체의 일측의 표면 및 기공의 내부에 구비된 리튬금속층을 포함하는 것인 애노드.
- 청구항 9에 있어서, 상기 애노드 중 리튬 원소와 규소 원소의 중량비는 10 내지 100: 100인 것인 애노드.
- 청구항 9에 있어서, 상기 다공성 집전체의 기공 내에서, 상기 리튬금속층이 실리콘 또는 실리콘 옥사이드와 접하는 계면에 구비된 리튬-실리콘 복합체층을 더 포함하는 것인 애노드.
- 청구항 11에 있어서, 상기 리튬-실리콘 복합체층은 하기 화학식 1로 표시되는 리튬-실리콘 복합체 또는 하기 화학식 2로 표시되는 리튬-실리콘옥사이드 복합체를 포함하는 것인 애노드:[화학식 1]LixSi[화학식 2]LioSiOp상기 화학식 1 및 2에서, x는 1.0 내지 4.0인 실수이고, o는 각각 0.3 내지 4.0인 실수이며, p는 각각 0.1 내지 2.0인 실수이다.
- 청구항 9에 있어서, 상기 다공성 집전체는 전도성 고분자, 금속, 금속산화물, 탄소 섬유, 카본 블랙, 카파 및 탄소 나노 튜브 중 적어도 하나를 포함하는 것인 애노드.
- 기공 내에 실리콘, 리튬-실리콘 복합체, 카본 및 바인더 수지가 구비된 다공성 집전체; 또는기공 내에 실리콘 옥사이드, 리튬-실리콘옥사이드 복합체, 카본 및 바인더 수지가 구비된 다공성 집전체를 포함하는 것인 애노드.
- 청구항 14에 있어서, 상기 리튬-실리콘 복합체는 하기 화학식 1로 표시되며, 상기 리튬-실리콘옥사이드 복합체는 하기 화학식 2로 표시되는 것인 애노드:[화학식 1]LixSi[화학식 2]LioSiOp상기 화학식 1 및 2에서, x는 1.0 내지 4.0인 실수이고, o는 각각 0.3 내지 4.0인 실수이며, p는 각각 0.1 내지 2.0인 실수이다.
- 청구항 1 내지 15 중 어느 한 항에 따른 애노드 및 캐소드를 포함하고,상기 애노드와 캐소드 사이에 구비된 전해질을 포함하는 것인 리튬 이차 전지.
- 청구항 16에 있어서, 상기 전해질은 상기 애노드 및 캐소드가 함침된 전해질액인 것인 리튬 이차 전지.
- 청구항 17에 있어서, 상기 리튬 이차 전지는 상기 애노드와 캐소드 사이에 구비된 분리막을 더 포함하는 것인 리튬 이차 전지.
- 청구항 16에 있어서, 상기 전해질은 고체 전해질막 또는 고분자 전해질막인 것인 리튬 이차 전지.
- 청구항 16의 리튬 이차 전지를 단위 전지로 포함하는 전지 모듈.
- 리튬금속층을 포함하는 제1 애노드를 준비하는 단계;다공성 집전체의 기공 내에 구비된 실리콘 또는 실리콘 옥사이드, 카본 및 바인더 수지를 포함하는 제2 애노드를 준비하는 단계; 및상기 제1 애노드와 상기 제2 애노드를 전기적으로 연결하는 단계를 포함하는 애노드의 제조방법.
- 청구항 21에 있어서, 상기 제2 애노드를 준비하는 단계는 다공성 집전체의 기공 내부에 실리콘 또는 실리콘 옥사이드, 카본 및 바인더 수지를 포함하는 조성물을 함침하는 단계를 포함하는 것인 애노드의 제조방법.
- 청구항 21에 있어서, 상기 제1 애노드와 상기 제2 애노드를 전기적으로 연결하는 단계는 상기 제1 애노드와 상기 제2 애노드를 전기적으로 병렬연결하는 단계인 것인 애노드의 제조방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580052695.0A CN107078279B (zh) | 2014-09-29 | 2015-09-24 | 负极、包含其的锂二次电池、包含所述锂二次电池的电池模块、及负极的制造方法 |
| EP15847108.6A EP3203549B1 (en) | 2014-09-29 | 2015-09-24 | Anode, lithium secondary battery comprising same, battery module comprising the lithium secondary battery, and method for manufacturing anode |
| JP2017514481A JP2017532734A (ja) | 2014-09-29 | 2015-09-24 | アノード、これを含むリチウム二次電池、前記リチウム二次電池を含む電池モジュール、およびアノードの製造方法 |
| US15/510,565 US10680290B2 (en) | 2014-09-29 | 2015-09-24 | Anode, lithium secondary battery comprising same, battery module comprising the lithium secondary battery, and method for manufacturing anode |
Applications Claiming Priority (4)
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| CN (1) | CN107078279B (ko) |
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| KR102374121B1 (ko) | 2017-08-02 | 2022-03-14 | 삼성전자주식회사 | 나노입자형 구조체에 내장된 위상구조 양자 프레임워크, 이를 포함하는 복합음극활물질, 음극, 리튬전지, 반도체, 소자 및 이의 제조 방법 |
| CN108063222B (zh) * | 2017-08-31 | 2024-04-02 | 广东猛狮新能源科技股份有限公司 | 一种锂离子电池负极材料、其制备方法和锂离子电池 |
| KR102507006B1 (ko) * | 2017-09-11 | 2023-03-06 | 현대자동차주식회사 | 전고체 전지 및 그 제조방법 |
| CN108183197A (zh) * | 2017-12-19 | 2018-06-19 | 国联汽车动力电池研究院有限责任公司 | 一种复合金属锂负极结构及其制备方法 |
| KR20200018259A (ko) | 2018-08-10 | 2020-02-19 | 주식회사 엘지화학 | 리튬 금속 전지용 음극, 이의 제조 방법, 및 이를 포함하는 리튬 금속 전지 |
| US11024842B2 (en) * | 2019-06-27 | 2021-06-01 | Graphenix Development, Inc. | Patterned anodes for lithium-based energy storage devices |
| CN112216878B (zh) * | 2019-07-10 | 2021-11-12 | 比亚迪股份有限公司 | 锂离子电池重复单元、锂离子电池及其使用方法、电池模组和汽车 |
| CN112216879B (zh) * | 2019-07-10 | 2022-05-13 | 比亚迪股份有限公司 | 锂离子电池重复单元、锂离子电池及其使用方法、电池模组和汽车 |
| CN112216877B (zh) * | 2019-07-10 | 2021-11-12 | 比亚迪股份有限公司 | 锂离子电池重复单元、锂离子电池及其使用方法、电池模组和汽车 |
| CN112216876B (zh) * | 2019-07-10 | 2022-04-15 | 比亚迪股份有限公司 | 锂离子电池重复单元、锂离子电池及其使用方法、电池模组和汽车 |
| CN112216875B (zh) * | 2019-07-10 | 2022-02-08 | 比亚迪股份有限公司 | 锂离子电池重复单元、锂离子电池及其使用方法、电池模组和汽车 |
| KR102821876B1 (ko) | 2019-10-23 | 2025-06-18 | 주식회사 엘지에너지솔루션 | 가압식 분리막 저항 측정 장치 및 측정 방법 |
| KR102836397B1 (ko) * | 2019-11-11 | 2025-07-18 | 주식회사 엘지에너지솔루션 | 평행하게 병렬 배치된 복수의 집전체를 포함하는 음극 및 이를 포함하는 이차전지 |
| KR102855234B1 (ko) * | 2020-04-27 | 2025-09-05 | 주식회사 엘지에너지솔루션 | 리튬 친화물질이 코팅된 리튬 이차전지용 음극 및 이의 제조방법 |
| WO2022205134A1 (zh) * | 2021-03-31 | 2022-10-06 | 宁德新能源科技有限公司 | 电化学装置和电子装置 |
| CN118352462A (zh) * | 2023-01-09 | 2024-07-16 | 通用汽车环球科技运作有限责任公司 | 用于含硅电极的电解质 |
| KR20250146492A (ko) * | 2024-04-01 | 2025-10-13 | 삼성에스디아이 주식회사 | 전고체 이차전지 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3203549A1 (en) | 2017-08-09 |
| JP2021009851A (ja) | 2021-01-28 |
| KR20160037784A (ko) | 2016-04-06 |
| US20170294688A1 (en) | 2017-10-12 |
| JP2017532734A (ja) | 2017-11-02 |
| EP3203549B1 (en) | 2019-04-17 |
| US10680290B2 (en) | 2020-06-09 |
| CN107078279B (zh) | 2021-04-09 |
| JP7207829B2 (ja) | 2023-01-18 |
| CN107078279A (zh) | 2017-08-18 |
| KR101751602B1 (ko) | 2017-06-30 |
| EP3203549A4 (en) | 2018-04-18 |
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