WO2024162745A1 - 고체 전해질, 이의 제조 방법 및 이를 포함하는 전고체 전지 - Google Patents
고체 전해질, 이의 제조 방법 및 이를 포함하는 전고체 전지 Download PDFInfo
- Publication number
- WO2024162745A1 WO2024162745A1 PCT/KR2024/001423 KR2024001423W WO2024162745A1 WO 2024162745 A1 WO2024162745 A1 WO 2024162745A1 KR 2024001423 W KR2024001423 W KR 2024001423W WO 2024162745 A1 WO2024162745 A1 WO 2024162745A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solid electrolyte
- less
- ionic conductivity
- solid
- sulfide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/14—Sulfur, selenium, or tellurium compounds of phosphorus
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G15/00—Compounds of gallium, indium or thallium
- C01G15/006—Compounds containing gallium, indium or thallium, with or without oxygen or hydrogen, and containing two or more other elements
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/05—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
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/30—Three-dimensional structures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/008—Halides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
-
- 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
Definitions
- All-solid-state batteries are batteries that replace the liquid electrolyte that fills the space between the positive and negative electrodes of existing lithium secondary batteries with a solid electrolyte. They are safe because there is no risk of explosion, and they have a higher energy density than existing batteries, so they are attracting attention as a next-generation battery.
- the solid electrolyte used in all-solid-state batteries is a solid-state material that can conduct lithium ions within the battery, and has high ionic conductivity at the level of the electrolyte currently applied to lithium secondary batteries.
- sulfide-based solid electrolytes are highly reactive to moisture, they react not only with moisture in the air but also with moisture in low-humidity conditions, generating the toxic gas hydrogen sulfide ( H2S ). Accordingly, not only does toxic hydrogen sulfide have a negative impact on worker safety, but there is also the problem of deterioration in the performance of the sulfide-based solid electrolyte itself.
- Patent Document 001 KR 10-2017-0021751 A
- An object of the present invention is to provide a solid electrolyte with improved atmospheric stability, specifically moisture stability.
- the present invention provides a solid electrolyte, a method for producing the same, and an all-solid-state battery.
- the present invention provides a solid electrolyte having a composition represented by the following chemical formula 1.
- X is at least one selected from F, Cl, Br, and I,
- the present invention provides a solid electrolyte in the above (1), wherein b satisfies 0.01 ⁇ b ⁇ 0.3.
- the present invention provides a solid electrolyte in the above (1) or (2), wherein 5a+3b+c+2x satisfies 5.0 ⁇ 5a+3b+c+2x ⁇ 5.7.
- the present invention provides a solid electrolyte having an argyrodite-type crystal structure in any one of the above (1) to (3).
- the present invention provides a solid electrolyte having an ion conductivity retention rate of 60% or more according to the following formula 1, wherein the solid electrolyte is in any one of (1) to (4).
- the initial ionic conductivity is the value measured at 22°C immediately after the solid electrolyte was manufactured
- the ionic conductivity after moisture exposure is the value measured at 22°C immediately after the solid electrolyte was exposed to air with a relative humidity of 1.91% for 5 hours.
- the present invention provides a solid electrolyte having an initial ionic conductivity of 2.0 mS/cm or more and 20.0 mS/cm or less in the above (5).
- the present invention provides a solid electrolyte having an ionic conductivity of 1.2 mS/cm or more and 12.0 mS/cm or less after exposure to moisture in (5) or (6).
- the present invention provides a solid electrolyte according to any one of the above (1) to (7), wherein the solid electrolyte has a total impurity content of 2 wt% or less.
- the present invention provides a method for producing a solid electrolyte, comprising the steps of (S1) dry-mixing a sulfide-based solid electrolyte raw material and a doping element to produce a precursor mixture, and (S2) heat-treating the precursor mixture, wherein the sulfide-based solid electrolyte raw material comprises Li 2 S, P 2 S 5 and LiX, wherein X is F, Cl, Br or I, and wherein Li 2 S is contained in an amount of more than 0.97 mol and less than 2.5 mol with respect to 1 mol of LiX, and wherein the doping element is Ga.
- the present invention provides a method for manufacturing a solid electrolyte, wherein, in the above (9), the step (S1) is performed by ball milling the sulfide-based solid electrolyte raw material and the doping element.
- the present invention provides a method for manufacturing a solid electrolyte, wherein the heat treatment in step (S2) of (9) or (10) is performed at a temperature of 300°C or higher and 600°C or lower.
- the present invention provides an all-solid-state battery comprising a solid electrolyte according to any one of (1) to (8).
- the solid electrolyte according to the present invention is doped with Ga, and by controlling the composition ratio of lithium ions to an appropriate level or lower, the generation of impurities can be suppressed and ion conductivity and moisture stability can be improved.
- the solid electrolyte according to the present invention has a low content of unreacted or unreacted impurities and a uniform composition, so it can have excellent effects in ion conductivity and atmospheric stability.
- Figure 1 shows XRD data for evaluating the detection of impurities in Example 1 and Comparative Example 2.
- all solid state battery' used in this specification refers to a battery in which all components are solid, and is distinguished from a liquid electrolyte secondary battery that uses a liquid electrolyte such as an electrolyte, and a gel polymer secondary battery that uses a liquid electrolyte together with a polymer electrolyte instead of a separator.
- the solid electrolyte according to the present invention has a composition represented by the following chemical formula 1.
- the solid electrolyte may have high ionic conductivity, low reactivity with a lithium negative electrode, and may suppress decomposition and deterioration of solid electrolyte particles when exposed to moisture or oxygen.
- X is at least one selected from F, Cl, Br, and I,
- the content proportion of the argyrodite-type structure crystal phase included in the sulfide-based solid electrolyte is preferably 80 mass% or more, and more preferably 85 mass% or more, 90 mass% or more, or 95 mass% or more with respect to the entire crystal phases constituting the sulfide-based solid electrolyte.
- the solid electrolyte may have an ionic conductivity retention rate of 60% or more, specifically, 65% or more, 70% or more, 75% or more, 80% or more, 85% or more, or 90% or more according to the following Equation 1.
- the ionic conductivity after moisture exposure was measured at 22°C immediately after exposing the solid electrolyte to air with a relative humidity of 1.91% for 5 hours.
- the impurities may have a total content of 2 wt% or less.
- the content of the impurities is based on 100 wt% of the solid electrolyte.
- the content of the impurities may be 2.0 wt% or less, 1.9 wt% or less, 1.8 wt% or less, 1.7 wt% or less, 1.6 wt% or less, 1.5 wt% or less, 1.4 wt% or less, 1.3 wt% or less, 1.2 wt% or less, 1.1 wt% or less, 1.0 wt% or less, 0.9 wt% or less, 0.8 wt% or less, 0.7 wt% or less, 0.6 wt% or less, 0.5 wt% or less, 0.4 wt% or less, 0.3 wt% or less, 0.2 wt% or less, or 0.1 wt% or less.
- the precursors are micronized and manufactured by uniform mixing, and a solid electrolyte having a desired uniform composition can be obtained.
- the solid electrolyte manufactured by uniform mixing can have high ionic conductivity and low electronic conductivity, and can have an excellent level of ionic conductivity maintenance rate by suppressing decomposition or deterioration of the solid electrolyte particles when exposed to moisture or oxygen, and thus, when the solid electrolyte is applied to an all-solid-state battery, it can have excellent performance characteristics.
- the method for producing a solid electrolyte of the present invention includes a step (S1) of dry-mixing a sulfide-based solid electrolyte raw material and a doping element to produce a precursor mixture, and a step (S2) of heat-treating the precursor mixture.
- the sulfide-based solid electrolyte raw material may include Li 2 S, P 2 S 5 and LiX, wherein X may be F, Cl, Br or I, and the Li 2 S may be included in an amount of more than 0.97 mol and less than 2.5 mol with respect to 1 mol of LiX, and the doping element may be Ga.
- the solid electrolyte manufactured by the solid electrolyte manufacturing method of the present invention may have the technical characteristics of the solid electrolyte described above, and the same contents as those described with respect to the solid electrolyte are omitted.
- the Li 2 S may be included in an amount of more than 0.97 mol and less than 2.5 mol with respect to 1 mol of LiX, and specifically, more than 0.97 mol, less than 2.5 mol, less than 2.4 mol, and less than 2.3 mol.
- the composition ratio of the lithium element can be controlled, thereby suppressing the generation of impurities and improving ionic conductivity.
- the step (S1) may be performed by ball milling the sulfide-based solid electrolyte raw material and the doping element.
- the step (S1) may be performed by ball milling the sulfide-based solid electrolyte raw material doping element with a planetary mill including zirconia (Zr) balls.
- the step (S1) may be performed by placing a sulfur (Li 2 S) precursor, a phosphorus (P 2 S 5 ) precursor, and a LiX precursor as the sulfide-based solid electrolyte raw materials into a zirconia container, and then adding ZrO 2 balls thereto and performing stirring and ball milling.
- the precursor mixture manufactured in the step (S1) may be in a powder form.
- the method for manufacturing a solid electrolyte according to the present invention can induce uniform mixing and maximize the ionic conductivity of the manufactured solid electrolyte by dry mixing the precursor of a sulfide-based solid electrolyte in powder form.
- the stirring time may be 3 hours or more, 6 hours or more, 8 hours or more, 10 hours or more, 12 hours or more, 14 hours or more, or 24 hours or more, and the stirring speed may be 300 rpm or more, 400 rpm or more, 500 rpm or more, 600 rpm or more, 700 rpm or more, or 800 rpm or more.
- the heat treatment of the step (S2) can be performed at a temperature of 300° C. or more and 600° C. or less. More specifically, the heat treatment temperature can be 300° C. or more, 350° C. or more, 400° C. or more, 450° C. or more, 500° C. or more, 600° C. or less, or 550° C.
- the heat treatment temperature is within the above range, an argyrodite phase can be formed from the precursor mixture.
- the precursor mixture in an amorphous powder form can be crystallized into an argyrodite solid electrolyte through the heat treatment process.
- the heat treatment temperature range is satisfied, the problem of residual unreacted precursors can be improved, and the problem of increased electronic conductivity due to sulfur loss can also be improved.
- the present invention provides an all-solid-state battery comprising the solid electrolyte.
- the all-solid-state battery comprises a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a solid electrolyte layer including a solid electrolyte according to the present invention disposed between the positive electrode and the negative electrode.
- the all-solid-state battery according to the present invention has a small decrease in ion conductivity due to moisture, and thus the initial efficiency, life characteristics, and output characteristics of the battery can be excellent.
- the all-solid-state battery of the present invention can be manufactured according to a conventional method known in the art.
- it can be manufactured by laminating and pressurizing so that a solid electrolyte layer exists between the positive electrode and the negative electrode.
- the above positive electrode can be manufactured by coating a positive electrode slurry containing a positive electrode active material, a binder, a conductive agent, a solvent, etc. on a positive electrode current collector.
- the positive electrode current collector is not particularly limited as long as it is conductive and does not cause a chemical change in the battery, and for example, stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel surface-treated with carbon, nickel, titanium, silver, etc. may be used.
- the surface may be formed with fine unevenness to strengthen the bonding strength of the positive electrode active material, and may be used in various forms such as a film, sheet, foil, net, porous body, foam, or non-woven fabric.
- the above positive electrode active material is a compound capable of reversible intercalation and deintercalation of lithium, and specifically may include a lithium metal oxide containing lithium and one or more metals such as cobalt, manganese, nickel, or aluminum. More specifically, the lithium metal oxide is a lithium-manganese oxide (e.g., LiMnO 2 , LiMn 2 O 4 , etc.), a lithium-cobalt oxide (e.g., LiCoO 2 , etc.), a lithium-nickel oxide (e.g., LiNiO 2 , etc.), a lithium-nickel-manganese oxide (e.g., LiNi 1-Y Mn Y O 2 (wherein, 0 ⁇ Y ⁇ 1), LiMn 2-z Ni z O 4 (wherein, 0 ⁇ Z ⁇ 2)), a lithium-nickel-cobalt oxide (e.g., LiNi 1-Y1 Co Y1 O 2 (wherein, 0 ⁇ Y1 ⁇ 1)), a lithium
- the lithium metal oxides are LiCoO 2 , LiMnO 2 , LiNiO 2 , lithium nickel manganese cobalt oxide (e.g., Li(Ni 1/3 Mn 1/3 Co 1/3 )O 2 , Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 , in that they can improve the capacity characteristics and stability of the battery.
- the lithium composite metal oxide may be Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 , It can be Li( Ni0.5Mn0.3Co0.2 ) O2 , Li( Ni0.7Mn0.15Co0.15 ) O2 , and Li( Ni0.8Mn0.1Co0.1 ) O2 , and any one of these or a mixture of two or more of them can be used.
- the above positive electrode active material may be included in an amount of 60 wt% to 99 wt%, preferably 70 wt% to 99 wt%, and more preferably 80 wt% to 98 wt%, based on the total weight of the solid content excluding the solvent in the positive electrode slurry.
- the above binder is a component that assists in bonding between the conductive material, the active material, and the current collector.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose, starch, hydroxypropyl cellulose, regenerated cellulose, polyvinyl pyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene monomer, sulfonated ethylene-propylene-diene monomer, styrene-butadiene rubber, fluororubber, various copolymers thereof, and the like.
- the binder may be included in an amount of 1 wt% to 20 wt%, preferably 1 wt% to 15 wt%, and more preferably 1 wt% to 10 wt%, based on the total weight of solids excluding the solvent in the positive electrode slurry.
- the above-mentioned conductive agent is a component for further improving the conductivity of the positive electrode active material.
- the conductive material is not particularly limited as long as it is conductive and does not cause a chemical change in the battery, and for example, carbon-based materials such as graphite; carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and thermal black; conductive fibers such as carbon fibers or metal fibers; metal powders such as fluorinated carbon, aluminum, and nickel powder; conductive whiskers such as zinc oxide and potassium titanate; conductive metal oxides such as titanium oxide; and conductive materials such as polyphenylene derivatives can be used.
- carbon-based materials such as graphite
- conductive fibers such as carbon fibers or metal fibers
- metal powders such as fluorinated carbon, aluminum, and nickel powder
- conductive whiskers such as zinc oxide and potassium titanate
- conductive metal oxides such as titanium oxide
- conductive materials such as polyphenylene derivatives
- the above-mentioned conductive agent may be included in an amount of 1 wt% to 20 wt%, preferably 1 wt% to 15 wt%, and more preferably 1 wt% to 10 wt%, based on the total weight of solids in the positive electrode slurry excluding the solvent.
- the solvent may include an organic solvent such as NMP (N-methyl-2-pyrrolidone), and may be used in an amount that provides a desirable viscosity when including the positive electrode active material, and optionally a binder and a conductive material.
- concentration of the solid content including the positive electrode active material, and optionally a binder and a conductive material may be 50 wt% to 95 wt%, preferably 70 wt% to 95 wt%, and more preferably 70 wt% to 90 wt%.
- the above negative electrode can be manufactured, for example, by coating a negative electrode slurry containing a negative electrode active material, a binder, a conductive agent, and a solvent on a negative electrode current collector, or a graphite electrode made of carbon (C) or the metal itself can be used as the negative electrode.
- the negative electrode current collector when manufacturing the negative electrode by coating the negative electrode slurry on the negative electrode current collector, the negative electrode current collector generally has a thickness of 3 to 500 ⁇ m.
- the negative electrode current collector is not particularly limited as long as it has high conductivity without causing a chemical change in the battery, and for example, copper, stainless steel, aluminum, nickel, titanium, sintered carbon, copper or stainless steel surface-treated with carbon, nickel, titanium, silver, etc., aluminum-cadmium alloy, etc. can be used.
- the bonding strength of the negative electrode active material can be strengthened by forming fine unevenness on the surface, and can be used in various forms such as a film, a sheet, a foil, a net, a porous body, a foam, a non-woven fabric, etc.
- the negative active material one or more negative active materials selected from the group consisting of natural graphite, artificial graphite, carbonaceous materials; lithium-containing titanium composite oxide (LTO), metals (Me) such as Si, SiO x , Sn, Li, Zn, Mg, Cd, Ce, Ni or Fe; alloys composed of the above metals (Me); oxides (MeO x ) of the above metals (Me); and complexes of the above metals (Me) and carbon may be exemplified.
- the negative active material may be a silicon-based negative active material including silicon (Si), silicon oxide (SiO x ) or a silicon alloy. In this case, a thin and stable SEI layer including a siloxane bond is formed, thereby further improving the high-temperature stability and life characteristics of the battery.
- the above negative electrode active material may be included in an amount of 60 wt% to 99 wt%, preferably 70 wt% to 99 wt%, and more preferably 80 wt% to 98 wt%, based on the total weight of solids excluding the solvent in the negative electrode slurry.
- the above binder is a component that assists in bonding between the conductive material, the active material, and the current collector.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose, starch, hydroxypropyl cellulose, regenerated cellulose, polyvinyl pyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene monomer, sulfonated ethylene-propylene-diene monomer, styrene-butadiene rubber, fluororubber, various copolymers thereof, and the like.
- the above conductive agent is a component for further improving the conductivity of the negative electrode active material.
- the conductive agent is not particularly limited as long as it has conductivity without causing a chemical change in the battery, and for example, graphite such as natural graphite or artificial graphite; carbon black such as acetylene black, Ketjen black, channel black, furnace black, lamp black, or thermal black; conductive fibers such as carbon fiber or metal fiber; metal powders such as fluorinated carbon, aluminum, or nickel powder; conductive whiskers such as zinc oxide or potassium titanate; conductive metal oxides such as titanium oxide; and conductive materials such as polyphenylene derivatives can be used.
- the above-mentioned conductive agent may be included in an amount of 1 wt% to 20 wt%, preferably 1 wt% to 15 wt%, and more preferably 1 wt% to 10 wt%, based on the total weight of solid content excluding the solvent in the cathode slurry.
- the metal itself When using the metal itself as the above cathode, it can be manufactured by a method of physically bonding, rolling, or depositing the metal onto the metal thin film itself or on the cathode current collector.
- the deposition method can use an electrical deposition method or a chemical vapor deposition method.
- the metal film itself or the metal bonded/rolled/deposited on the negative electrode current collector may include one metal or an alloy of two metals selected from the group consisting of lithium (Li), nickel (Ni), tin (Sn), copper (Cu), and indium (In).
- the solid electrolyte layer may further include a binder in addition to the solid electrolyte according to the present invention.
- the above binder is a component that assists in bonding between the conductive material, the active material, and the current collector.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose, starch, hydroxypropyl cellulose, regenerated cellulose, polyvinyl pyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene monomer, sulfonated ethylene-propylene-diene monomer, styrene-butadiene rubber, fluororubber, various copolymers thereof, and the like.
- the binder may be included in an amount of 1 wt% to 20 wt%, preferably 1 wt% to 15 wt%, and more preferably 1 wt% to 10 wt%, based on the total weight of the solid electrolyte layer.
- the present invention provides a battery module including the above-described all-solid-state battery as a unit cell and a battery pack including the same. Since the battery module and the battery pack include the above-described secondary battery having high capacity, high rate characteristics and cycle characteristics, they can be used as a power source for medium and large-sized devices selected from the group consisting of electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles and power storage systems.
- Li 2 S, P 2 S 5 , LiBr, Ga 2 S 3 4 kinds of precursors were dry mixed (ball milled) at a molar ratio of 2.25 : 0.45 : 1 : 0.05.
- a planetary ball mill equipment containing zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to manufacture a solid electrolyte having a composition represented by Li 5.5 P 0.9 Ga 0.1 S 4.65 Br 1.0 having an argyrodite-type crystal structure.
- the above processes were all performed under an inert Ar atmosphere.
- Li 2 S, P 2 S 5 , LiBr, Ga 2 S 3 4 kinds of precursors were dry mixed (ball milled) at a molar ratio of 2.25 : 0.475 : 1 : 0.025.
- a planetary ball mill equipment containing zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to manufacture a solid electrolyte having a composition represented by Li 5.5 P 0.95 Ga 0.05 S 4.7 Br 1.0 having an argyrodite-type crystal structure.
- the above processes were all performed under an inert Ar atmosphere.
- Li 5.5 P 0.95 Ga 0.05 S 4.7 Br 1.0 having the above azirodite-type crystal structure was used as the solid electrolyte in Example 2.
- Li 2 S, P 2 S 5 , and LiBr three kinds of precursors were dry mixed (ball milled) at a molar ratio of 2.5:0.5:1.
- a planetary ball mill equipped with zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to produce Li 6 PS 5 Br 1.0 having an argyrodite-type crystal structure. All of the above processes were performed under an inert Ar atmosphere.
- Li 6 PS 5 Br 1.0 having the above azirodite-type crystal structure was used as the solid electrolyte of Comparative Example 1.
- Li 2 S, P 2 S 5 , LiBr, Ga 2 S 3 4 kinds of precursors were dry mixed (ball milled) at a molar ratio of 2.6 : 0.45 : 1 : 0.05.
- a planetary ball mill equipment containing zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to produce Li 6.2 P 0.9 Ga 0.1 S 5 Br 1.0 having an argyrodite-type crystal structure. All of the above processes were performed under an inert Ar atmosphere.
- Li 6.2 P 0.9 Ga 0.1 S 5 Br 1.0 having the above azirodite-type crystal structure was used as the solid electrolyte of Comparative Example 2.
- Li 2 S, P 2 S 5 , LiCl, and LiBr were dry mixed (ball milled) in a molar ratio of 1.9 : 0.5 : 1.2 : 0.4.
- a planetary ball mill equipped with zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to produce Li 5.4 PS 4.4 Cl 1.2 Br 0.4 having an argyrodite-type crystal structure.
- the above processes were all performed under an inert Ar atmosphere.
- Li 2 S, P 2 S 5 , and LiBr three kinds of precursors were dry mixed (ball milled) at a molar ratio of 2.15 : 0.5 : 1.0.
- a planetary ball mill equipped with zirconia balls was used, and the mixture was rotated at a speed of 300 to 700 rpm for uniform mixing.
- the obtained mixed precursor was heat-treated at 450 to 550 °C for 12 hours to crystallize, and then pulverized through ball milling again to produce Li 5.3 PS 4.65 Br 1.0 having an argyrodite-type crystal structure. All of the above processes were performed under an inert Ar atmosphere.
- Each of the solid electrolyte powders manufactured in Examples 1 and 2 and Comparative Examples 1 to 7 was placed into a SUS mold having a diameter of 13 mm, 150 mg each, immediately after manufacture.
- the mold was mounted on a press together with an insulating PEEK, and a potentiostat was connected to the SUS mold.
- the pressure was slowly lowered and maintained at 100 MPa, and AC impedance measurements were performed at a measurement frequency of 1 Hz to 7 MHz.
- the ionic conductivity was calculated from the measured resistance value through the Nyquist plot, and is shown in Table 1 below. All measurements were performed in a drying room at a temperature of 22°C and a relative humidity of 0.7%.
- Each of the solid electrolyte powders manufactured in Examples 1 and 2 and Comparative Examples 1 to 7 was exposed to an atmosphere having a relative humidity of 1.91% for 5 hours, and then 150 mg each was placed into a SUS mold having a diameter of 13 mm.
- the mold was mounted on a press together with an insulating PEEK, and a potentiostat was connected to the SUS mold.
- the pressure was slowly lowered and maintained at 100 MPa, and AC impedance measurements were performed at a measurement frequency of 1 Hz to 7 MHz.
- the ionic conductivity after moisture exposure was calculated from the measured resistance values through a Nyquist plot, and is shown in Table 1 below. All measurements were performed in a drying room at a temperature of 22°C and a relative humidity of 0.7%.
- the ionic conductivity maintenance rate was calculated according to Equation 1 below and is shown in Table 1 below.
- Example 1 Li 5.5 P 0.9 Ga 0.1 S 4.65 Br 1.0 70
- Example 2 Li 5.5 P 0.95 Ga 0.05 S 4.7 Br 1.0 67
- Comparative Example 1 Li 6 PS 5 Br 1.0 55
- Comparative Example 2 Li 6.2 P 0.9 Ga 0.1 S 5 Br 1.0 40
- Comparative Example 3 Li 5.4 PS 4.4 Cl 1.2 Br 0.4 32
- Comparative Example 4 Li 5.4 PS 4.4 Cl 1.6 18
- Comparative Example 6 Li 5.4 PS 4.7 Br 1.0 52
- Comparative Example 7 Li 5.3 PS 4.65 Br 1.0 54
- Examples 1 and 2 are those in which gallium cations are doped and the lithium mole number (11-(5a+3b+c+2x)) is adjusted to less than 6.
- the ion conductivity maintenance rate is 60% or more, and accordingly, the solid electrolyte of the present invention has the effect of reducing the deterioration rate of ion conductivity after exposure to moisture and maintaining the electrolyte structure even when exposed to moisture.
- Comparative Examples 1 to 7 are not doped with gallium cations or have a lithium molar number of 6 or more, and thus have low ion conductivity retention rates compared to the solid electrolytes of Examples 1 and 2.
- the lithium molar number is 6 or more, which confirms that the ion conductivity retention rate is low.
- Comparative Examples 3 to 7 the ion conductivity decreases significantly after exposure to moisture, so that the ion conductivity retention rate is low, and thus problems may arise in the stability of the electrolyte structure and manufacturing process when exposed to moisture.
- Impurity detection evaluation was performed for the above Example 1 and Comparative Example 2.
- the impurity detection of the solid electrolyte powder was calculated using XRD measurement and Rietveld refinement analysis.
- XRD equipment Bruker D8 Endeavor, Cu K ⁇ radiation, 1.5406 ⁇ wavelength was used, and the measurement conditions were applied as a scan rate of 2 Deg/min, 2 theta angle of 10 to 90 deg under non-atmospheric exposure.
- the impurities were identified using the TOPAS Rietevld refinement program, and the detection of the impurities was evaluated.
- the XRD data of Example 1 and Comparative Example 2 are shown in Fig. 1 and Table 2.
- Example 1 where gallium is doped but the lithium molar number is less than 6, no impurities were detected, but in the case of Comparative Example 2 where the lithium molar number exceeds 6, impurities such as Li 2 S or LiBr are generated, which may lower the ionic conductivity, and thus the ionic conductivity maintenance rate is also poor.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Conductive Materials (AREA)
Abstract
Description
| 구분 | 조성 | 이온 전도도 유지율 (%) |
| 실시예 1 | Li5.5P0.9Ga0.1S4.65Br1.0 | 70 |
| 실시예 2 | Li5.5P0.95Ga0.05S4.7Br1.0 | 67 |
| 비교예 1 | Li6PS5Br1.0 | 55 |
| 비교예 2 | Li6.2P0.9Ga0.1S5Br1.0 | 40 |
| 비교예 3 | Li5.4PS4.4Cl1.2Br0.4 | 32 |
| 비교예 4 | Li5.4PS4.4Cl1.6 | 18 |
| 비교예 5 | Li5.4PS4.4Cl1.0Br0.6 | 40 |
| 비교예 6 | Li5.4PS4.7Br1.0 | 52 |
| 비교예 7 | Li5.3PS4.65Br1.0 | 54 |
| 구분 | Argyrodite(wt%) | 불순물(wt%) | |
| LiBr | Li2S | ||
| 실시예 1 | 100 | - | - |
| 비교예 2 | 97 | 2 | 1 |
Claims (12)
- 하기 화학식 1로 표시되는 조성을 가지는 고체 전해질:[화학식 1]Li11-(5a+3b+c+2x)PaGabS5-(c+x)X1+c상기 화학식 1에서,X는 F, Cl, Br 및 I 중에서 선택되는 1종 이상이고,5.0<5a+3b+c+2x<6.0, 0<b≤0.5, 0≤c<0.7, 0<c+x<1, 1≤a+b≤1.5 이다.
- 청구항 1에 있어서,상기 b는 0.01≤b≤0.3인 것인 고체 전해질.
- 청구항 1에 있어서,상기 5a+3b+c+2x는 5.0<5a+3b+c+2x≤5.7인 것인 고체 전해질.
- 청구항 1에 있어서,상기 고체 전해질은 아지로다이트형 결정 구조를 가지는 것인 고체 전해질.
- 청구항 5에 있어서,상기 초기 이온 전도도가 2.0 mS/cm 이상 20.0 mS/cm 이하인 고체 전해질.
- 청구항 5에 있어서,상기 수분 노출 후 이온 전도도가 1.2 mS/cm 이상 12.0 mS/cm 이하인 고체 전해질.
- 청구항 1에 있어서,상기 고체 전해질은 불순물의 총 함량이 2 중량% 이하인 것인 고체 전해질.
- 황화물계 고체 전해질 원료 물질 및 도핑 원소를 건식 혼합하여 전구체 혼합물을 제조하는 단계 (S1); 및상기 전구체 혼합물을 열처리하는 단계 (S2)를 포함하고,상기 황화물계 고체 전해질 원료 물질은 Li2S, P2S5 및 LiX를 포함하고,상기 X는 F, Cl, Br 또는 I이며,상기 Li2S은 LiX 1 몰에 대해서 0.97 몰 초과 2.5 몰 미만으로 포함되고,상기 도핑 원소는 Ga인 고체 전해질 제조방법.
- 청구항 9에 있어서,상기 (S1) 단계는 상기 황화물계 고체 전해질 원료 물질 및 상기 도핑 원소를 볼 밀링하여 실시되는 것인 고체 전해질 제조방법.
- 청구항 9에 있어서,상기 (S2) 단계의 열처리는 300 ℃ 이상 600 ℃ 이하의 온도에서 실시되는 것인 고체 전해질 제조방법.
- 청구항 1 내지 청구항 8 중 어느 한 항에 따른 고체 전해질을 포함하는 전고체 전지.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24750543.1A EP4560764A4 (en) | 2023-01-30 | 2024-01-30 | SOLID ELECTROLYTE, ITS PREPARATION PROCESS AND SOLID ELECTROLYTE BATTERY INCLUDING IT |
| CN202480003795.3A CN119731829A (zh) | 2023-01-30 | 2024-01-30 | 固体电解质、其制备方法和包含其的全固态电池 |
| US19/104,900 US20260058194A1 (en) | 2023-01-30 | 2024-01-30 | Solid electrolyte, method for preparing same, and all-solid-state battery comprising same |
| JP2025539975A JP2026504018A (ja) | 2023-01-30 | 2024-01-30 | 固体電解質、その製造方法およびこれを含む全固体電池 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0012072 | 2023-01-30 | ||
| KR20230012072 | 2023-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024162745A1 true WO2024162745A1 (ko) | 2024-08-08 |
Family
ID=92147235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/001423 Ceased WO2024162745A1 (ko) | 2023-01-30 | 2024-01-30 | 고체 전해질, 이의 제조 방법 및 이를 포함하는 전고체 전지 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20260058194A1 (ko) |
| EP (1) | EP4560764A4 (ko) |
| JP (1) | JP2026504018A (ko) |
| KR (1) | KR20240119853A (ko) |
| CN (1) | CN119731829A (ko) |
| WO (1) | WO2024162745A1 (ko) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170021751A (ko) | 2015-08-18 | 2017-02-28 | 울산과학기술원 | 전극 활물질-고체 전해질 복합체, 이의 제조 방법, 이를 포함하는 전고체 전지 |
| KR20200048749A (ko) * | 2018-10-30 | 2020-05-08 | 한국생산기술연구원 | 전고체 리튬이차전지용 갈륨 도핑 llzo 고체전해질의 제조방법 및 갈륨 도핑 llzo 고체전해질 |
| CN114230342A (zh) * | 2021-11-25 | 2022-03-25 | 哈尔滨工业大学 | 一种稀土氧化物掺杂改性Ga-LLZO固体电解质及其制备方法 |
| KR20220044537A (ko) * | 2019-09-19 | 2022-04-08 | 내셔날 인스티튜트 오브 어드밴스드 인더스트리얼 사이언스 앤드 테크놀로지 | 갈륨 치환형 고체 전해질 재료 및 전고체 리튬이온 이차전지 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6611949B2 (ja) * | 2015-12-22 | 2019-11-27 | トヨタ・モーター・ヨーロッパ | 固体電解質用材料 |
| US20230150829A1 (en) * | 2020-04-09 | 2023-05-18 | Basf Se | Lithium ion conducting solid materials |
| KR20220039386A (ko) * | 2020-09-22 | 2022-03-29 | 삼성에스디아이 주식회사 | 고체이온전도체 화합물, 이를 포함하는 고체전해질, 이를 포함하는 전기화학 셀, 및 이의 제조방법 |
| KR20240028949A (ko) * | 2022-08-25 | 2024-03-05 | 주식회사 엘지화학 | 고체 전해질 및 이를 포함하는 전고체 전지 |
-
2024
- 2024-01-30 CN CN202480003795.3A patent/CN119731829A/zh active Pending
- 2024-01-30 WO PCT/KR2024/001423 patent/WO2024162745A1/ko not_active Ceased
- 2024-01-30 EP EP24750543.1A patent/EP4560764A4/en active Pending
- 2024-01-30 JP JP2025539975A patent/JP2026504018A/ja active Pending
- 2024-01-30 KR KR1020240014229A patent/KR20240119853A/ko active Pending
- 2024-01-30 US US19/104,900 patent/US20260058194A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170021751A (ko) | 2015-08-18 | 2017-02-28 | 울산과학기술원 | 전극 활물질-고체 전해질 복합체, 이의 제조 방법, 이를 포함하는 전고체 전지 |
| KR20200048749A (ko) * | 2018-10-30 | 2020-05-08 | 한국생산기술연구원 | 전고체 리튬이차전지용 갈륨 도핑 llzo 고체전해질의 제조방법 및 갈륨 도핑 llzo 고체전해질 |
| KR20220044537A (ko) * | 2019-09-19 | 2022-04-08 | 내셔날 인스티튜트 오브 어드밴스드 인더스트리얼 사이언스 앤드 테크놀로지 | 갈륨 치환형 고체 전해질 재료 및 전고체 리튬이온 이차전지 |
| CN114230342A (zh) * | 2021-11-25 | 2022-03-25 | 哈尔滨工业大学 | 一种稀土氧化物掺杂改性Ga-LLZO固体电解质及其制备方法 |
Non-Patent Citations (3)
| Title |
|---|
| See also references of EP4560764A4 |
| SEOL KWONSOO, KALIYAPERUMAL CHITRARASU, UTHAYAKUMAR AARTHI, YOON INSANG, LEE GAHYEON, SHIN DONGWOOK: "Enhancing the Moisture Stability and Electrochemical Performances of Li 6 PS 5 Cl Solid Electrolytes through Ga Substitution", ELECTROCHIMICA ACTA, vol. 441, 22 December 2022 (2022-12-22), pages 141757, XP093197448, DOI: 10.1016/j.electacta.2022.141757 * |
| ZHANG ZHUORAN; ZHANG JIANXING; JIA HUANHUAN; PENG LINFENG; AN TAO; XIE JIA: "Enhancing ionic conductivity of solid electrolyte by lithium substitution in halogenated Li-Argyrodite", JOURNAL OF POWER SOURCES, ELSEVIER, AMSTERDAM, NL, vol. 450, 19 December 2019 (2019-12-19), AMSTERDAM, NL, XP086049648, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2019.227601 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4560764A1 (en) | 2025-05-28 |
| EP4560764A4 (en) | 2026-01-14 |
| KR20240119853A (ko) | 2024-08-06 |
| JP2026504018A (ja) | 2026-02-03 |
| US20260058194A1 (en) | 2026-02-26 |
| CN119731829A (zh) | 2025-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019083221A1 (ko) | 이차전지용 양극 활물질, 그 제조방법 및 이를 포함하는 리튬 이차전지 | |
| WO2019147017A1 (ko) | 이차전지용 양극 활물질, 그 제조방법 및 이를 포함하는 리튬 이차전지 | |
| WO2023063778A1 (ko) | 리튬 이차전지용 양극 활물질 및 이의 제조방법 | |
| WO2021154035A1 (ko) | 리튬 이차전지용 양극 활물질 및 이의 제조 방법 | |
| WO2019194510A1 (ko) | 리튬 이차전지용 양극 활물질, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지 | |
| WO2019050282A1 (ko) | 리튬 이차전지용 양극 활물질, 이의 제조 방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지 | |
| WO2019059552A2 (ko) | 이차전지용 양극 활물질, 그 제조방법 및 이를 포함하는 리튬 이차전지 | |
| WO2020111545A1 (ko) | 양극 활물질, 상기 양극 활물질을 포함하는 양극 및 리튬 이차전지 | |
| WO2019059647A2 (ko) | 리튬 이차전지용 양극재, 이의 제조방법, 이를 포함하는 리튬 이차전지용 양극 및 리튬 이차전지 | |
| WO2020111543A1 (ko) | 팔면체 구조의 리튬 망간계 양극 활물질, 이를 포함하는 양극 및 리튬 이차전지 | |
| WO2024005553A1 (ko) | 양극 활물질, 이의 제조방법, 및 이를 포함하는 양극 및 리튬 이차전지 | |
| WO2020180125A1 (ko) | 리튬 이차전지 | |
| WO2021096265A1 (ko) | 리튬 이차전지용 양극 활물질 및 상기 양극 활물질의 제조 방법 | |
| WO2021066576A1 (ko) | 리튬 이차전지용 양극 활물질 전구체의 제조 방법 | |
| WO2022039576A1 (ko) | 양극 활물질의 제조방법 | |
| WO2023121155A1 (ko) | 리튬 이차 전지용 양극 활물질, 이를 포함하는 양극 및 이를 포함하는 리튬 이차 전지 | |
| WO2022158899A1 (ko) | 양극 활물질의 제조방법 및 양극 활물질 | |
| WO2022169270A1 (ko) | 양극 활물질 및 이의 제조방법 | |
| WO2023167495A1 (ko) | 복합 고체 전해질 및 이를 포함하는 전고체 전지 | |
| WO2021080384A1 (ko) | 양극 활물질, 이를 포함하는 양극 및 리튬 이차전지 | |
| WO2023101512A1 (ko) | 양극 활물질 및 이의 제조방법 | |
| WO2022169271A1 (ko) | 양극 활물질 및 이의 제조방법 | |
| WO2019093864A2 (ko) | 리튬 코발트계 양극 활물질, 그 제조방법, 이를 포함하는 양극 및 이차 전지 | |
| WO2024136232A1 (ko) | 리튬 이차 전지용 양극 활물질 및 이를 포함하는 리튬 이차 전지 | |
| WO2024043740A1 (ko) | 고체 전해질 및 이를 포함하는 전고체 전지 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24750543 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024750543 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202480003795.3 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 2024750543 Country of ref document: EP Effective date: 20250224 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202480003795.3 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024750543 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2025539975 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025539975 Country of ref document: JP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |



