# US 11,909,029 B2 · Positive electrode having lithium transition metal oxide containing nickel, cobalt and manganese for secondary battery and secondary battery including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,029 B2 - Document ID: US11909029B2 - Status: Granted - Kind: B2 - Application number: 17/055,012 - Filed: 2019-05-21 - Published: 2021-07-15 - Granted: 2024-02-20 - Earliest claimed: 2018-05-21 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Won Sig Jung; Sang Soon Choi; Hyun Ah Park - Web page: https://patentgrep.com/patent/US11909029B2 ## CPC - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/1315: containing halogen atoms, e.g. LiCoOxFy - C01G 53/506: with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.8, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.8 - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers - H01M 4/621: {Binders} - H01M 10/052: Li-accumulators - H01M 10/42: Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence) - C01P 2006/32: Thermal properties - H01M 4/366: {as layered products} - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A positive electrode for a secondary battery includes a positive electrode active material layer, which includes a positive electrode active material including a lithium transition metal oxide which contains nickel, cobalt, and manganese and has an atomic ratio of nickel in total transition metals of 80 atm % or more, and a metal oxide including a metallic element having a binding potential with lithium of 0.5 V to 4 V. A secondary battery including the positive electrode is also provided. ## Claims ### Claim 1 A positive electrode for a secondary battery, comprising: a positive electrode active material layer which comprises: a positive electrode active material including a lithium transition metal oxide which contains nickel, cobalt, and manganese and having an atomic ratio of nickel in total transition metals of 80 atm % or more; and a metal oxide including a metallic element having a binding potential with lithium of 0.5 V to 4 V, wherein the metal oxide is included in an amount of 0.1 wt % to 2 wt % based on a total weight of the positive electrode active material layer, and wherein the lithium transition metal oxide has a concentration gradient in which at least one element of the nickel, the cobalt, or the manganese in the lithium transition metal oxide is continuously changed across an entire particle or in a specific region. ### Claim 2 (depends on 1) The positive electrode of claim 1, wherein the metal oxide comprises at least one metallic element selected from the group consisting of molybdenum (Mo), vanadium (V), titanium (Ti), zirconium (Zr), iron (Fe), niobium (Nb), tungsten (W), copper (Cu), nickel (Ni), manganese (Mn), cobalt (Co), bismuth (Bi), antimony (Sb), gallium (Ga), and germanium (Ge). ### Claim 3 (depends on 1) The positive electrode of claim 1, wherein the metal oxide comprises at least one selected from the group consisting of MoO3, V2O5, ZrO2, TiO2, WO3, CuO, NiO, MnO2, Co3O4, Bi2O3, Sb2O3, Ga2O3, and GeO2. ### Claim 4 (depends on 1) The positive electrode of claim 1, wherein the lithium transition metal oxide is represented by Formula 1: Li1+x[NiyCozMnwMv]O2−pBp [Formula 1] wherein, in Formula 1, 0≤x≤0.3, 0.8≤y<1, 0