WO2009145494A1 - 리튬 전이금속 산화물 제조용 전구체 - Google Patents
리튬 전이금속 산화물 제조용 전구체 Download PDFInfo
- Publication number
- WO2009145494A1 WO2009145494A1 PCT/KR2009/001735 KR2009001735W WO2009145494A1 WO 2009145494 A1 WO2009145494 A1 WO 2009145494A1 KR 2009001735 W KR2009001735 W KR 2009001735W WO 2009145494 A1 WO2009145494 A1 WO 2009145494A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transition metal
- precursor
- lithium
- metal oxide
- sulfate
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/80—Compounds containing nickel, with or without oxygen or hydrogen, and containing one or more other elements
- C01G53/82—Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/40—Complex oxides containing nickel and at least one other metal element
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/40—Complex oxides containing nickel and at least one other metal element
- C01G53/42—Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2
- C01G53/44—Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese
- C01G53/50—Complex oxides containing nickel and at least one other metal element containing alkali metals, e.g. LiNiO2 containing manganese of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2
-
- 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
-
- 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
-
- 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
- the present invention relates to a precursor for preparing a lithium transition metal oxide, and more particularly, a precursor for preparing a lithium transition metal oxide, which is a cathode active material for a lithium secondary battery, by reacting with a lithium-containing compound, and includes two or more transition metals. And a sulfate ion (SO 4 ) -containing salt ion derived from a transition metal salt for preparing a precursor is contained in an amount of 0.1 to 0.7 wt% based on the total amount of the precursor. It is about.
- lithium secondary batteries with high energy density and voltage, long cycle life, and low self discharge rate It is commercially used and widely used.
- Lithium-containing cobalt oxide (LiCoO 2 ) is mainly used as a positive electrode active material of a lithium secondary battery.
- lithium-containing manganese oxides such as LiMnO 2 in a layered crystal structure and LiMn 2 O 4 in a spinel crystal structure, and lithium-containing nickel oxide
- (LiNiO 2 ) is also contemplated.
- LiCoO 2 is widely used because of its excellent physical properties such as excellent cycle characteristics, but has low safety and high cost due to resource limitations of cobalt as a raw material.
- Lithium manganese oxides such as LiMnO 2 and LiMn 2 O 4 have the advantage of using a resource-rich and environmentally friendly manganese as a raw material, attracting a lot of attention as a cathode active material that can replace LiCoO 2 .
- these lithium manganese oxides have disadvantages of small capacity and poor cycle characteristics.
- lithium nickel-based oxides such as LiNiO 2 have a lower discharge cost than the cobalt-based oxides and have a high discharge capacity when charged to 4.25 V.
- the reversible capacity of doped LiNiO 2 is equivalent to that of LiCoO 2 (about 153 mAh). / g) in excess of about 200 mAh / g.
- commercialized cells containing LiNiO 2 positive electrode active materials have improved energy densities, and thus, in order to develop high capacity batteries, Research is active.
- the lithium transition metal oxide is generally prepared by mixing the lithium precursor and the transition metal precursor, respectively, and calcining at a high temperature.
- a transition metal oxide or a transition metal hydroxide is mainly used as the transition metal precursor.
- each transition metal raw material is added, or it is used in the form of a composite transition metal oxide or a composite transition metal hydroxide.
- the present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.
- the inventors of the present application after extensive research and various experiments, based on lithium transition metal oxides prepared from such precursors, when the precursor contains a certain amount of salt ions derived from the transition metal salt that is its raw material, As a result, it was confirmed that the secondary battery can exhibit excellent performance and minimize electrode degradation, and thus, the present invention has been completed.
- the present invention is a precursor for producing a lithium transition metal oxide, which is a positive electrode active material for lithium secondary batteries through reaction with a lithium-containing compound, containing two or more transition metals, and from a transition metal salt for precursor production It provides a precursor for producing a lithium transition metal oxide, characterized in that the sulfate ions (SO 4 ) -containing salt ions derived from 0.1 to 0.7% by weight based on the total amount of the precursor.
- precursors for preparing lithium transition metal oxides may be used as a raw material, using a sol-gel method or hydrothermal treatment using a transition metal salt. (hydrothermal), spray pyrolysis method, co-precipitation method and the like.
- salt ions derived from such transition metal salts are contained in a specific amount in a precursor, and the salt ions contain sulfate ions (SO 4 ) ions.
- SO 4 sulfate ions
- the inventors of the present application newly show that when a lithium transition metal oxide is manufactured using a precursor containing a specific amount of the salt ions, the performance of the lithium secondary battery is excellent and problems such as degeneration of the electrode are greatly suppressed. Confirmed.
- the lithium transition metal oxide prepared from the precursor according to the present invention has significantly less reaction by-products such as Li 2 CO 3 or LiOH.H 2 O, and thus, gelation of the slurry due to the reaction by-products and deterioration of high temperature performance of the battery. Problems such as high temperature swelling can be solved.
- the salt ion acts as a kind of reaction aid in the process of preparing a lithium transition metal oxide to improve the reactivity and to prepare a lithium transition metal oxide having excellent physical properties. It is assumed to be possible.
- the transition metal may be, for example, two or more selected from elements belonging to groups 5 (VB) to 11 (VIIIB) on the periodic table.
- the transition metals may be two or more selected from the group consisting of Ni, Mn, and Co.
- the combined physical properties of the transition metals may be expressed in the lithium composite transition metal oxide.
- the transition metal salt from which the salt ions are derived may be sulfate, and examples of such sulfate include nickel sulfate, cobalt sulfate, and manganese sulfate, which may be used alone or in combination of two or more.
- the salt ions may further include nitrate ions (NO 3 ), which may be derived from nickel nitrate, cobalt nitrate, manganese nitrate, and the like as transition metal salts.
- NO 3 nitrate ions
- salt ions are included in an amount of 0.1 to 0.7% by weight based on the total amount of the precursor, too few salt ions may be difficult to achieve a desired effect. Battery characteristics of the lithium transition metal oxide produced by inhibition may be reduced. This can also be confirmed in the experiments described later. More preferred content of salt ions may be 0.2 to 0.6% by weight.
- the method of measuring the content of salt ions in the precursor may vary, and preferably, a detection method by ion chromatography (ion chromatograph) defined below may be used.
- the present invention also relates to a precursor for preparing a lithium transition metal oxide, wherein the sulfated ions (SO 4 ) are based on the total amount of the precursor when the detection solution diluted with water is dissolved in the precursor and dissolved in water.
- SO 4 sulfated ions
- Such precursors substantially contain only sulfate ions as salt ions, and are characterized in that the sulfate ions set by the specific detection method defined by the above contents have a specific content range as described above.
- the coprecipitation method is a method of preparing two or more elements simultaneously by using a precipitation reaction in an aqueous solution.
- a transition metal precursor including two or more transition metals may be prepared by mixing the transition metal salts in a desired molar ratio according to the type of transition metal to prepare an aqueous solution, and then adding a basic material and optionally a neutralizing agent. It can be prepared by coprecipitation while keeping the pH basic.
- the transition metal salt may be sulfate or the like as described above, and the basic material may include sodium hydroxide, potassium hydroxide, lithium hydroxide, and the like, and preferably sodium hydroxide, but is not limited thereto.
- additives and / or alkali carbonates may be further added in the coprecipitation process.
- the additive is not particularly limited and may be preferably to form a complex with a transition metal.
- an ammonium ion source an ethylene diamine compound, a citric acid compound, or the like can be used.
- ammonium ion supply body ammonia water, the aqueous solution of ammonium sulfate, the aqueous solution of ammonium nitrate, etc. are mentioned, for example.
- the alkali carbonate may be selected from the group consisting of ammonium carbonate, sodium carbonate, potassium carbonate and lithium carbonate, and in some cases, may be used by mixing two or more thereof.
- the content ratio of the components, the content of salt ions, etc. can be adjusted, and the average particle diameter, particle diameter distribution, particles You can also adjust the density.
- the pH range may be 9 to 13
- the preferred pH range may be 10 to 12.
- the present invention also provides a lithium transition metal oxide, which is prepared by calcining the precursor for preparing a lithium transition metal oxide and a lithium-containing material.
- the lithium transition metal oxide prepared using the precursor had a very low content of lithium byproducts such as lithium carbonate (Li 2 CO 3 ) or lithium hydroxide (LiOH).
- lithium byproducts such as lithium carbonate (Li 2 CO 3 ) or lithium hydroxide (LiOH).
- Li 2 CO 3 lithium carbonate
- LiOH lithium hydroxide
- the lithium-containing material is not particularly limited, and examples thereof include lithium hydroxide, lithium carbonate, lithium oxide, and the like, and preferably lithium carbonate (Li 2 CO 3 ) and / or lithium hydroxide (LiOH). .
- the lithium transition metal oxide preferably contains two or more transition metals, preferably selected from Ni, Mn, and Co, more preferably all of them simultaneously.
- the present invention also provides a cathode active material for a lithium secondary battery comprising the lithium transition metal oxide.
- the cathode active material according to the present invention may optionally further include materials known in the art.
- the present invention also provides a lithium secondary battery comprising the positive electrode active material.
- a lithium secondary battery is generally composed of a positive electrode, a negative electrode, a separator and a lithium salt-containing nonaqueous electrolyte.
- the positive electrode is produced by, for example, applying a mixture of a positive electrode active material, a conductive material, and a binder onto a positive electrode current collector, followed by drying, and optionally, a filler is further added to the mixture.
- the positive electrode current collector is generally made to a thickness of 3 to 500 ⁇ m. Such a positive electrode current collector is not particularly limited as long as it has high conductivity without causing chemical changes in the battery.
- a positive electrode current collector is not particularly limited as long as it has high conductivity without causing chemical changes in the battery.
- the surface of stainless steel, aluminum, nickel, titanium, calcined carbon, or aluminum or stainless steel Surface treated with carbon, nickel, titanium, silver or the like can be used.
- the current collector may form fine irregularities on its surface to increase the adhesion of the positive electrode active material, and may be in various forms such as a film, a sheet, a foil, a net, a porous body, a foam, and a nonwoven fabric.
- the conductive material is typically added in an amount of 1 to 20 wt% based on the total weight of the mixture including the positive electrode active material.
- a conductive material is not particularly limited as long as it has conductivity without causing chemical change in the battery, and examples thereof include graphite such as natural graphite and artificial graphite; Carbon blacks such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and summer black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride powder, aluminum powder and nickel powder; Conductive whiskeys such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives and the like can be used.
- the binder is a component that assists in bonding the active material and the conductive material to the current collector, and is generally added in an amount of 1 to 20 wt% based on the total weight of the mixture including the positive electrode active material.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene , Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, fluorine rubber, various copolymers and the like.
- the filler is optionally used as a component for inhibiting expansion of the positive electrode, and is not particularly limited as long as it is a fibrous material without causing chemical change in the battery.
- the filler include olefinic polymers such as polyethylene and polypropylene; Fibrous materials, such as glass fiber and carbon fiber, are used.
- the negative electrode is manufactured by applying and drying a negative electrode material on the negative electrode current collector, and if necessary, the components as described above may be further included.
- the negative electrode current collector is generally made to a thickness of 3 to 500 ⁇ m.
- a negative electrode current collector is not particularly limited as long as it has conductivity without causing chemical change in the battery.
- the surface of copper, stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel Surface-treated with carbon, nickel, titanium, silver, and the like, aluminum-cadmium alloy, and the like can be used.
- fine concavities and convexities may be formed on the surface to enhance the bonding strength of the negative electrode active material, and may be used in various forms such as a film, a sheet, a foil, a net, a porous body, a foam, and a nonwoven fabric.
- the separator is interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used.
- the pore diameter of the separator is generally from 0.01 to 10 ⁇ m ⁇ m, thickness is generally 5 ⁇ 300 ⁇ m.
- a separator for example, olefin polymers such as chemical resistance and hydrophobic polypropylene; Sheets or non-woven fabrics made of glass fibers or polyethylene are used.
- a solid electrolyte such as a polymer
- the solid electrolyte may also serve as a separator.
- the lithium-containing non-aqueous electrolyte consists of a nonaqueous electrolyte and lithium.
- a nonaqueous electrolyte a nonaqueous electrolyte, a solid electrolyte, an inorganic solid electrolyte, and the like are used.
- organic solid electrolyte examples include polyethylene derivatives, polyethylene oxide derivatives, polypropylene oxide derivatives, phosphate ester polymers, polyedgetion lysine, polyester sulfides, polyvinyl alcohols, polyvinylidene fluorides, Polymers containing ionic dissociating groups and the like can be used.
- Examples of the inorganic solid electrolyte include Li 3 N, LiI, Li 5 NI 2 , Li 3 N-LiI-LiOH, LiSiO 4 , LiSiO 4 -LiI-LiOH, Li 2 SiS 3 , Li 4 SiO 4 , Nitrides, halides, sulfates and the like of Li, such as Li 4 SiO 4 -LiI-LiOH, Li 3 PO 4 -Li 2 S-SiS 2 , and the like, may be used.
- the lithium salt is a good material to be dissolved in the non-aqueous electrolyte, for example, LiCl, LiBr, LiI, LiClO 4 , LiBF 4 , LiB 10 Cl 10 , LiPF 6 , LiCF 3 SO 3 , LiCF 3 CO 2 , LiAsF 6, LiSbF 6, LiAlCl 4, CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3 SO 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, lithium tetraphenyl borate and imide have.
- pyridine triethyl phosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, hexaphosphate triamide, etc.
- halogen-containing solvents such as carbon tetrachloride and ethylene trifluoride may be further included, and carbon dioxide gas may be further included to improve high temperature storage characteristics.
- Nickel sulfate, cobalt sulfate, and manganese sulfate were mixed in a ratio (molar ratio) of 0.55: 0.2: 0.25 to prepare 1.5M aqueous solution of transition metal, and 3M aqueous sodium hydroxide solution was prepared.
- the aqueous transition metal solution was placed in a wet reactor containing distilled water maintained at 45 to 50 ° C., and the aqueous sodium hydroxide solution was added to maintain distilled water in a wet reactor at a pH of 11.0 to 11.5. The solution was fed continuously to the wet reactor at a rate of 0.035 L to 0.04 L / hr.
- the average residence time of the solution in the wet reactor was about 5 hours. Synthesized.
- the nickel-cobalt-manganese composite transition metal precursor prepared by continuously reacting for 20 hours was washed several times with distilled water and dried in a 120 ° C. constant temperature dryer for 24 hours, and then the nickel-cobalt-manganese composite transition metal was A precursor was obtained.
- a transition metal precursor was prepared in the same manner as in Example 1 except that the ammonia solution was added at 0.03 to 0.035 L / hr in the tank for the wet reactor.
- a transition metal precursor was prepared in the same manner as in Example 1, except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio (molar ratio) of 0.6: 0.2: 0.2.
- a transition metal precursor was prepared in the same manner as in Example 2, except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio (molar ratio) of 0.6: 0.2: 0.2.
- a transition metal precursor was prepared in the same manner as in Example 1, except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio (molar ratio) of 0.65: 0.15: 0.2.
- a transition metal precursor was prepared in the same manner as in Example 2, except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio (molar ratio) of 0.65: 0.15: 0.2.
- a transition metal precursor was prepared in the same manner as in Example 1 except for changing the aqueous solution of transition metal mixed with nickel sulfate, cobalt sulfate, and manganese sulfate in a ratio (molar ratio) of 0.8: 0.1: 0.1.
- a transition metal precursor was prepared in the same manner as in Example 2, except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio of 0.8: 0.1: 0.1.
- a transition metal precursor was prepared in the same manner as in Example 1 except for changing the aqueous solution of transition metal containing nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.6: 0.4.
- a transition metal precursor was prepared in the same manner as in Example 2 except for changing the aqueous solution of transition metal mixed with nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.6: 0.4.
- a transition metal precursor was prepared in the same manner as in Example 1 except for changing the aqueous solution of transition metal mixed with nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.4: 0.6.
- a transition metal precursor was prepared in the same manner as in Example 2 except for changing the aqueous solution of transition metal mixed with nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.4: 0.6.
- Nickel sulfate, cobalt sulfate, and manganese sulfate were mixed in a ratio (molar ratio) of 0.55: 0.2: 0.25 to prepare 1.5M aqueous solution of transition metal, and 3M aqueous sodium hydroxide solution was prepared.
- the aqueous transition metal solution was placed in a wet reactor containing distilled water maintained at 45-50 ° C., and the aqueous sodium hydroxide solution was added to maintain distilled water in a wet reactor at a pH of 10.0-10.5. The solution was fed continuously to the reactor.
- the nickel-cobalt-manganese composite transition metal precursor synthesized by continuously reacting an aqueous transition metal solution, an aqueous sodium hydroxide solution and an ammonia solution for 20 hours was washed several times with distilled water, dried in a constant temperature dryer, and then a nickel-cobalt-manganese composite transition. A metal precursor was obtained.
- a transition metal precursor was prepared in the same manner as in Comparative Example 1 except that nickel sulfate, cobalt sulfate, and manganese sulfate were changed to an aqueous solution of transition metal mixed in a ratio (molar ratio) of 0.6: 0.2: 0.2.
- a transition metal precursor was prepared in the same manner as in Comparative Example 1 except for changing nickel sulfate, cobalt sulfate, and manganese sulfate into an aqueous transition metal solution mixed in a ratio (molar ratio) of 0.65: 0.15: 0.2.
- a transition metal precursor was prepared in the same manner as in Comparative Example 1 except for changing nickel sulfate, cobalt sulfate, and manganese sulfate into an aqueous solution of a transition metal mixed in a ratio of 0.8: 0.1: 0.1.
- a transition metal precursor was prepared in the same manner as in Comparative Example 1 except for changing the aqueous solution of transition metal mixed with nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.6: 0.4.
- a transition metal precursor was prepared in the same manner as in Comparative Example 1 except for changing the aqueous solution of transition metal mixed with nickel sulfate and cobalt sulfate in a ratio (molar ratio) of 0.4: 0.6.
- the transition metal precursors (Examples 1 to 12) according to the present invention contains about 0.2 to 0.5% by weight of sulfate ions, and the transition metal precursors of Comparative Examples 1 to 6 are sulfuric acid It can be seen that it contains approximately 0.9% by weight or more of ionized ions.
- the transition metal precursors prepared in Examples 1 to 12 and Comparative Examples 1 to 6, respectively, were mixed with Li 2 CO 3 in a ratio of 1 to 1 (weight ratio), and then heated at a temperature increase rate of 5 ° C./minute to 920 ° C. Baking for 10 hours to prepare a lithium transition metal oxide powder (anode active material).
- a lithium transition metal oxide powder anode active material
- prepared slurry was prepared by mixing Denka as a conductive material and KF1100 as a binder in a weight ratio of 95: 2.5: 2.5 to a cathode active material powder, and uniformly coated on an aluminum foil having a thickness of 20 ⁇ m. This was dried to 130 °C to prepare a positive electrode for a lithium secondary battery.
- a lithium secondary battery positive electrode thus prepared a lithium metal foil as a counter electrode (cathode), a polyethylene membrane (Celgard, thickness: 20 ⁇ m) as a separator, and ethylene carbonate, dimethylene carbonate, and diethyl carbonate are 1: 2: 1 the solvent and the use of a liquid electrolyte with a LiPF 6 dissolved in 1M, was prepared in 2016 coin cells by mixed.
- a lithium secondary battery comprising a lithium transition metal oxide prepared from transition metal precursors (Examples 1 to 12) according to the present invention as a cathode active material is Comparative Examples 1 to Compared with the lithium secondary battery based on the transition metal precursor of 6, it can be seen that the initial charge and discharge and excellent efficiency.
- transition metal precursors prepared in Examples 1 to 12 and Comparative Examples 1 to 6, respectively were mixed with Li 2 CO 3 in a ratio of 1 to 1 (weight ratio), and then heated at a temperature increase rate of 5 ° C./minute to 920 ° C.
- Lithium transition metal oxide powder was prepared by calcining for 10 hours at, and pH by titration for the lithium transition metal powder to determine the Li by-product value.
- the lithium transition metal oxide prepared from the transition metal precursors (Examples 1 to 12) according to the present invention is lithium prepared from the transition metal precursors of Comparative Examples 1 to 6 It can be seen that there are significantly less Li by-products than transition metal oxides. Given that Li by-products cause gelation of the slurry, high temperature performance of the battery, high temperature swelling, etc., it can be expected that the lithium secondary battery according to the present invention can exhibit much better battery performance than the conventional lithium secondary battery. Can be.
- the precursor according to the present invention contains a specific amount of sulfate ion-containing salt ions derived from the transition metal salt which is a raw material thereof, and has excellent performance and can minimize problems such as electrode degradation.
- a lithium secondary battery having excellent capacity, lifespan characteristics, rate characteristics, and the like can be provided.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims (14)
- 리튬 함유 화합물과의 반응을 통해 리튬 이차전지용 양극 활물질인 리튬 전이금속 산화물을 제조하는 전구체로서, 2종 이상의 전이금속을 포함하고 있고, 전구체 제조용 전이금속 염(transition metal salt)으로부터 유래되는 황산화 이온(SO4) 함유 염 이온(salt ion)이 전구체 전체량을 기준으로 0.1 내지 0.7 중량%로 포함되어 있는 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 전이금속은 주기율표 상의 5족(VB족) 내지 11족(VIIIB족)에 속하는 원소들에서 선택되는 둘 또는 그 이상인 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 전이금속은 Ni, Mn 및 Co로 이루어진 군에서 선택되는 둘 또는 그 이상인 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 전이금속은 NixCoyMn1-(x+y) (여기서, 0.3≤x≤0.9, 0.1≤y≤0.6, x+y=1임)의 조성을 가지는 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 4 항에 있어서, 상기 전이금속은 0.1 몰 이하의 범위에서 Al, Mg, Cr, Ti 및 Si로 이루어진 군에서 선택되는 하나 또는 둘 이상으로 치환된 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 전이금속 염은 황산염인 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 6 항에 있어서, 상기 황산염은 황산 니켈, 황산 코발트 및 황산 망간으로 이루어진 군에서 선택되는 하나 또는 둘 이상인 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 염 이온에는 질산화 이온(NO3)이 포함되어 있는 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 있어서, 상기 염 이온의 함량은 전구체 전체량을 기준으로 0.2 내지 0.6 중량%인 것을 특징으로 하는 리튬 전이금속 산화물 전구체.
- 리튬 전이금속 산화물 제조용 전구체로서, 상기 전구체에 산을 부가하여 용해시킨 후 크로마토그래피에서 검량하였을 때, 황산화 이온(SO4)이 전구체 전체량을 기준으로 0.1 내지 0.7 중량%로 검출되는 것을 특징으로 하는 리튬 전이금속 산화물 제조용 전구체.
- 제 1 항에 따른 리튬 전이금속 산화물 제조용 전구체와, 리튬 함유 물질을 소성 반응시켜 제조되는 것을 특징으로 하는 리튬 전이금속 산화물.
- 제 11 항에 있어서, 상기 리튬 함유 물질은 탄산 리튬(Li2CO3) 및/또는 수산화 리튬(LiOH)인 것을 특징으로 하는 리튬 전이금속 산화물.
- 제 11 항에 따른 리튬 전이금속 산화물을 포함하는 것을 특징으로 하는 리튬 이차전지용 양극 활물질.
- 제 13 항의 양극 활물질을 포함하는 것을 특징으로 하는 리튬 이차전지.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011502862A JP5575744B2 (ja) | 2008-04-03 | 2009-04-03 | リチウム遷移金属酸化物製造用の前駆物質 |
| US12/679,210 US8268198B2 (en) | 2008-04-03 | 2009-04-03 | Precursor for preparation of lithium transition metal oxide |
| EP09754959.6A EP2289849B2 (en) | 2008-04-03 | 2009-04-03 | Precursor for production of lithium transition-metal oxide |
| CN200980100467A CN101801849A (zh) | 2008-04-03 | 2009-04-03 | 用于制备锂过渡金属氧化物的前体 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20080031081 | 2008-04-03 | ||
| KR10-2008-0031081 | 2008-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009145494A1 true WO2009145494A1 (ko) | 2009-12-03 |
Family
ID=41377286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2009/001735 Ceased WO2009145494A1 (ko) | 2008-04-03 | 2009-04-03 | 리튬 전이금속 산화물 제조용 전구체 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8268198B2 (ko) |
| EP (1) | EP2289849B2 (ko) |
| JP (1) | JP5575744B2 (ko) |
| CN (2) | CN101801849A (ko) |
| TW (1) | TWI397506B (ko) |
| WO (1) | WO2009145494A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130183585A1 (en) * | 2010-09-14 | 2013-07-18 | Indsutry-University Cooperation Foundation Hanyang University | Positive active material precursor for rechargeable lithium battery, method of preparing positive active material for rechargeable lithium battery using the same, and rechargeable lithium battery including the prepared positive active material for rechargeable lithium battery |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101098193B1 (ko) * | 2010-04-30 | 2011-12-23 | 주식회사 엘지화학 | 이차전지용 양극 활물질 |
| KR101265215B1 (ko) * | 2011-03-08 | 2013-05-24 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 양극 활물질 및 이를 포함하는 리튬 이차 전지 |
| CN102315437B (zh) * | 2011-08-29 | 2014-08-13 | 上海空间电源研究所 | 动力锂离子电池高比容量富锂复合正极材料及其合成方法 |
| BR112014031358B8 (pt) * | 2012-07-09 | 2023-01-17 | Lg Chemical Ltd | Método para preparar um composto de metal de transição compósito de um precursor de metal de transição |
| US9692039B2 (en) | 2012-07-24 | 2017-06-27 | Quantumscape Corporation | Nanostructured materials for electrochemical conversion reactions |
| KR20140081472A (ko) * | 2012-12-21 | 2014-07-01 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 |
| CA2894672A1 (en) * | 2012-12-21 | 2014-06-26 | Dow Global Technologies Llc | Method for making lithium transition metal olivines using water/cosolvent mixtures |
| WO2015130831A1 (en) | 2014-02-25 | 2015-09-03 | Quantumscape Corporation | Hybrid electrodes with both intercalation and conversion materials |
| TWI633062B (zh) | 2014-06-12 | 2018-08-21 | 烏明克公司 | 用於可充電電池的鋰過渡金屬氧化物陰極材料之先質 |
| WO2016025866A1 (en) | 2014-08-15 | 2016-02-18 | Quantumscape Corporation | Doped conversion materials for secondary battery cathodes |
| EP3238290B1 (en) * | 2014-12-23 | 2024-05-01 | QuantumScape Battery, Inc. | Lithium rich nickel manganese cobalt oxide (lr-nmc) |
| US10547056B2 (en) | 2015-09-30 | 2020-01-28 | Umicore | Precursors for lithium transition metal oxide cathode materials for rechargeable batteries |
| KR102065716B1 (ko) | 2015-10-20 | 2020-02-11 | 주식회사 엘지화학 | 다층 구조의 금속 산화물들을 포함하는 양극 활물질 제조용 전구체 및 이를 사용하여 제조된 리튬 이차전지용 양극 활물질 |
| KR101982790B1 (ko) | 2015-10-20 | 2019-05-27 | 주식회사 엘지화학 | 다층 구조의 리튬 금속 산화물들을 포함하는 리튬 이차전지용 양극 활물질 및 그것을 포함하는 양극 |
| KR102088508B1 (ko) | 2015-10-22 | 2020-03-12 | 주식회사 엘지화학 | 다층 구조의 금속 산화물들을 포함하는 양극 활물질 제조용 전구체 및 이를 사용하여 제조된 리튬 이차전지용 양극 활물질 |
| CN110589898B (zh) | 2016-01-14 | 2022-09-27 | 飞翼新能源公司 | 一种高镍正极材料及其制备方法 |
| CN109314237A (zh) * | 2016-06-30 | 2019-02-05 | 松下知识产权经营株式会社 | 正极活性物质和非水电解质二次电池 |
| EP3878037A1 (en) | 2018-11-06 | 2021-09-15 | QuantumScape Battery, Inc. | Electrochemical cells with catholyte additives and lithium-stuffed garnet separators |
| RU2748762C1 (ru) * | 2020-12-11 | 2021-05-31 | Автономная некоммерческая образовательная организация высшего образования "Сколковский институт науки и технологий" (Сколковский институт науки и технологий) | Композитный катодный материал на основе слоистых оксидов переходных металлов для литий-ионных аккумуляторов и его соединения-предшественники |
| US20250027204A1 (en) * | 2021-11-15 | 2025-01-23 | Massachusetts Institute Of Technology | Spray Pyrolysis of Li-Salt Films |
| KR20240110654A (ko) | 2021-11-30 | 2024-07-15 | 퀀텀스케이프 배터리, 인코포레이티드 | 고체-상태 배터리를 위한 캐소드액 |
| US20250246616A1 (en) | 2021-12-17 | 2025-07-31 | Quantumscape Battery, Inc. | Cathode materials having oxide surface species |
| WO2024215357A1 (en) * | 2023-04-13 | 2024-10-17 | Sylvatex, Inc. | Method for the manufacture of lithium metal oxides and phosphates |
| CN121443558A (zh) | 2023-07-10 | 2026-01-30 | 巴斯夫欧洲公司 | 用于制造阴极活性材料及其前体的方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021402A (ja) * | 1998-06-30 | 2000-01-21 | Fuji Film Serutec Kk | 正極活物質とその製造方法とこれを用いた非水電解質二次電池 |
| US20050037263A1 (en) * | 2003-08-15 | 2005-02-17 | Chuanfu Wang | Positive electrodes for rechargeable batteries |
| JP2005327644A (ja) * | 2004-05-17 | 2005-11-24 | Shin Kobe Electric Mach Co Ltd | リチウム二次電池用正極材の製造方法、正極材及びリチウム二次電池 |
| KR20060051055A (ko) * | 2004-09-24 | 2006-05-19 | 주식회사 엘지화학 | 알루미늄-함유 리튬 전이금속 산화물 복합 전구체 및 이의제조방법 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09245787A (ja) * | 1996-03-07 | 1997-09-19 | Kansai Shokubai Kagaku Kk | リチウム二次電池用正極活物質 |
| JP4427351B2 (ja) * | 2003-02-21 | 2010-03-03 | 住友金属鉱山株式会社 | 非水系電解質二次電池用正極活物質および非水系電解質二次電池 |
| US20050220700A1 (en) * | 2003-03-14 | 2005-10-06 | Seimi Chemical Co., Ltd. | Positive electrode active material powder for lithium secondary battery |
| JP4949018B2 (ja) * | 2004-03-16 | 2012-06-06 | パナソニック株式会社 | リチウム二次電池 |
| JP4370206B2 (ja) * | 2004-06-21 | 2009-11-25 | パナソニック株式会社 | 半導体装置及びその製造方法 |
| JP4997700B2 (ja) * | 2004-12-13 | 2012-08-08 | 三菱化学株式会社 | リチウム二次電池正極材料用リチウムニッケルマンガン系複合酸化物粉体及びその製造方法、並びにそれを用いたリチウム二次電池用正極及びリチウム二次電池 |
| WO2006070977A1 (en) * | 2004-12-31 | 2006-07-06 | Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University) | Double-layer cathode active materials for lithium secondary batteries, method for preparing the active materials, and lithium secondary batteries using the active materials |
| JP4839633B2 (ja) * | 2005-02-28 | 2011-12-21 | パナソニック株式会社 | 非水電解質二次電池および非水電解質二次電池用正極活物質の製造方法 |
| JP4859487B2 (ja) * | 2005-03-09 | 2012-01-25 | パナソニック株式会社 | 非水電解質二次電池 |
| KR100660759B1 (ko) * | 2005-03-11 | 2006-12-22 | 제일모직주식회사 | 비수계 전해질 리튬 이차전지용 양극활물질, 그 제조방법및 그를 포함하는 리튬 이차전지 |
| US9190647B2 (en) * | 2005-03-17 | 2015-11-17 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery with high temperature and storage characteristics |
| KR20070009447A (ko) * | 2005-07-14 | 2007-01-18 | 마츠시타 덴끼 산교 가부시키가이샤 | 리튬 2차 전지용 양극 및 이를 이용한 리튬 2차 전지 |
| CN100561777C (zh) * | 2005-11-09 | 2009-11-18 | 比亚迪股份有限公司 | 锂离子电池正极材料的镍钴锰酸锂前驱体的制备方法 |
| JP4211865B2 (ja) * | 2006-12-06 | 2009-01-21 | 戸田工業株式会社 | 非水電解質二次電池用Li−Ni複合酸化物粒子粉末及びその製造方法、並びに非水電解質二次電池 |
| US20080280205A1 (en) * | 2007-05-07 | 2008-11-13 | 3M Innovative Properties Company | Lithium mixed metal oxide cathode compositions and lithium-ion electrochemical cells incorporating same |
| KR101234965B1 (ko) * | 2007-11-06 | 2013-02-20 | 파나소닉 주식회사 | 비수전해질 이차전지용 양극 활물질 및 그것을 이용한 비수전해질 이차전지 |
| CN101679074B (zh) * | 2008-02-04 | 2012-02-22 | 松下电器产业株式会社 | 含锂过渡金属氧化物的制造方法 |
-
2009
- 2009-04-03 EP EP09754959.6A patent/EP2289849B2/en active Active
- 2009-04-03 JP JP2011502862A patent/JP5575744B2/ja active Active
- 2009-04-03 CN CN200980100467A patent/CN101801849A/zh active Pending
- 2009-04-03 US US12/679,210 patent/US8268198B2/en active Active
- 2009-04-03 WO PCT/KR2009/001735 patent/WO2009145494A1/ko not_active Ceased
- 2009-04-03 TW TW098111425A patent/TWI397506B/zh active
- 2009-04-03 CN CN201210384395.0A patent/CN102931391B/zh active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000021402A (ja) * | 1998-06-30 | 2000-01-21 | Fuji Film Serutec Kk | 正極活物質とその製造方法とこれを用いた非水電解質二次電池 |
| US20050037263A1 (en) * | 2003-08-15 | 2005-02-17 | Chuanfu Wang | Positive electrodes for rechargeable batteries |
| JP2005327644A (ja) * | 2004-05-17 | 2005-11-24 | Shin Kobe Electric Mach Co Ltd | リチウム二次電池用正極材の製造方法、正極材及びリチウム二次電池 |
| KR20060051055A (ko) * | 2004-09-24 | 2006-05-19 | 주식회사 엘지화학 | 알루미늄-함유 리튬 전이금속 산화물 복합 전구체 및 이의제조방법 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130183585A1 (en) * | 2010-09-14 | 2013-07-18 | Indsutry-University Cooperation Foundation Hanyang University | Positive active material precursor for rechargeable lithium battery, method of preparing positive active material for rechargeable lithium battery using the same, and rechargeable lithium battery including the prepared positive active material for rechargeable lithium battery |
| US9570743B2 (en) * | 2010-09-14 | 2017-02-14 | Industry-University Cooperation Foundation Hanyang University | Positive active material precursor for rechargeable lithium battery, method of preparing positive active material for rechargeable lithium battery using the same, and rechargeable lithium battery including the prepared positive active material for rechargeable lithium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102931391A (zh) | 2013-02-13 |
| JP2011518102A (ja) | 2011-06-23 |
| CN102931391B (zh) | 2018-10-09 |
| EP2289849B1 (en) | 2014-05-07 |
| US20110089367A1 (en) | 2011-04-21 |
| US8268198B2 (en) | 2012-09-18 |
| CN101801849A (zh) | 2010-08-11 |
| TWI397506B (zh) | 2013-06-01 |
| EP2289849A1 (en) | 2011-03-02 |
| TW201000407A (en) | 2010-01-01 |
| EP2289849A4 (en) | 2012-05-23 |
| EP2289849B2 (en) | 2019-08-07 |
| JP5575744B2 (ja) | 2014-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009145494A1 (ko) | 리튬 전이금속 산화물 제조용 전구체 | |
| WO2013137577A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체 및 그 제조방법 | |
| WO2009145471A1 (ko) | 리튬 복합 전이금속 산화물 제조용 신규 전구체 | |
| WO2011081422A2 (ko) | 리튬 복합 산화물 및 그 제조 방법. | |
| WO2017069410A1 (ko) | 다층 구조의 리튬 금속 산화물들을 포함하는 리튬 이차전지용 양극 활물질 및 그것을 포함하는 양극 | |
| WO2013165150A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체 및 그 제조방법 | |
| WO2017069407A1 (ko) | 다층 구조의 금속 산화물들을 포함하는 양극 활물질 제조용 전구체 및 이를 사용하여 제조된 리튬 이차전지용 양극 활물질 | |
| WO2015016482A1 (ko) | 음극 전극의 전리튬화 방법 | |
| WO2015016548A1 (ko) | 비가역 첨가제가 포함되어 있는 이차전지용 양극 합제 | |
| WO2017069405A1 (ko) | 다층 구조의 금속 산화물들을 포함하는 양극 활물질 제조용 전구체 및 이를 사용하여 제조된 리튬 이차전지용 양극 활물질 | |
| KR20180002055A (ko) | 도핑 원소를 가진 고전압용 리튬 코발트 산화물을 포함하는 리튬 이차전지용 양극 활물질 및 이를 제조하는 방법 | |
| WO2015026080A1 (ko) | 양극 활물질 및 이를 포함하는 리튬 이차전지와 이의 제조방법 | |
| KR20090037770A (ko) | 리튬 이차전지용 양극 활물질 | |
| WO2015016506A1 (ko) | 에너지 밀도가 향상된 전극 활물질 및 이를 포함하는 리튬 이차전지 | |
| WO2011084003A2 (ko) | 4v 영역과 3v 영역에서 우수한 충방전 특성을 발휘할 수 있는 리튬 망간 산화물을 포함하는 양극 활물질 | |
| WO2020071814A1 (ko) | 실리콘계 화합물을 포함하는 다층 구조 음극 및 이를 포함하는 리튬 이차전지 | |
| WO2014010862A1 (ko) | 리튬 복합 전이금속 산화물 제조용 전구체, 그 제조방법, 및 리튬 복합 전이금속 산화물 | |
| WO2016068681A1 (ko) | 전이금속 산화물의 전구체, 그 제조방법, 리튬 복합 전이금속 산화물, 이를 포함하는 양극 및 이차전지 | |
| WO2013115544A1 (ko) | 리튬 이차전지용 리튬 복합 전이금속 산화물의 전구체 입자들 및 이를 포함하는 양극 활물질 | |
| WO2015026121A1 (ko) | 수명특성이 우수한 리튬 코발트계 복합 산화물 및 이를 포함하는 이차전지용 양극 활물질 | |
| KR100938623B1 (ko) | 리튬 전이금속 산화물 제조용 전구체 | |
| WO2013002513A2 (ko) | 향상된 레이트 특성의 이차전지용 양극 활물질 | |
| WO2010147389A2 (ko) | 리튬 이차전지용 양극 활물질 | |
| WO2011136550A2 (ko) | 양극 활물질 및 이를 이용한 리튬 이차전지 | |
| WO2010047522A2 (ko) | 전극 효율 및 에너지 밀도 특성이 개선된 양극 합제 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 200980100467.0 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09754959 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2009754959 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011502862 Country of ref document: JP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 12679210 Country of ref document: US |


