# US 11,444,281 B2 · Nickel-based active material precursor for lithium secondary battery, method of preparing the same, nickel-based active material for lithium secondary battery formed therefrom, and lithium secondary battery including positive electrode including nickel-based active material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,281 B2 - Document ID: US11444281B2 - Status: Granted - Kind: B2 - Application number: 16/655,068 - Filed: 2019-10-16 - Published: 2020-04-16 - Granted: 2022-09-13 - Earliest claimed: 2018-10-16 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: Pilsang Yun; Wooyoung Yang; Jangsuk Hyun - Web page: https://patentgrep.com/patent/US11444281B2 ## CPC - 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 - C01G 53/504: with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.5, e.g. Li(MzNixCoyMn1-x-y-z)O2 with x ≥ 0.5 - 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 - C01G 53/84: Hydroxides - H01B 1/06: mainly consisting of other non-metallic substances - H01M 4/366: {as layered products} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - C01P 2004/03: obtained by SEM - C01P 2004/04: obtained by TEM, STEM, STM or AFM - C01P 2004/20: extending in two dimensions, e.g. plate-like - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - C01P 2004/84: one phase coated with the other - C01P 2006/40: Electric properties - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - 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) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - 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 nickel-based active material precursor includes a particulate structure including a core portion, an intermediate layer portion on the core portion, and a shell portion on the intermediate layer portion, wherein the intermediate layer portion and the shell portion include primary particles radially arranged on the core portion, and each of the core portion and the intermediate layer portion includes a cation or anion different from that of the shell portion. The cation includes at least one selected from boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), tungsten (W), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminium (Al), and the anion includes at least one selected from phosphate (PO4), BO2, B4O7, B3O5, and F. ## Claims ### Claim 1 A nickel-based active material precursor for a lithium secondary battery, the nickel-based active material precursor comprising a particulate structure comprising a core portion, an intermediate layer portion on the core portion, and a shell portion on the intermediate layer portion, wherein the nickel-based active material precursor comprises nickel (Ni), the intermediate layer portion and the shell portion comprise primary particles radially arranged on the core portion, each of the core portion and the intermediate layer portion comprises a cation or anion different from that of the shell portion, the cation comprises at least one selected from boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), tungsten (W), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminum (Al), and the anion comprises at least one selected from phosphate (PO4), BO2, B4O7, B3O5, and F. ### Claim 2 (depends on 1) The nickel-based active material precursor of claim 1, wherein the shell portion comprises at least one cation selected from B, Mg, Ca, Sr, Ba, Ti, V, W, Cr, Fe, Cu, Zr, and Al. ### Claim 3 (depends on 1) The nickel-based active material precursor of claim 1, wherein a content of the cation is 0.9 mol % or less with respect to a total amount of the nickel-based active material precursor. ### Claim 4 (depends on 1) The nickel-based active material precursor of claim 1, wherein the core portion and the intermediate layer portion comprise at least one anion selected from phosphate (PO4), BO2, B4O7, B3O5, and F. ### Claim 5 (depends on 1) The nickel-based active material precursor of claim 1, wherein a content of the anion is 0.06 mol % or less with respect to a total amount of the nickel-based active material precursor. ### Claim 6 (depends on 1) The nickel-based active material precursor of claim 1, wherein the intermediate layer portion and the shell portion are each lower in porosity than the core portion, or the core portion and the shell portion are each higher in porosity than the intermediate layer portion. ### Claim 7 (depends on 1) The nickel-based active material precursor of claim 1, wherein the nickel-based active material precursor has a mean particle diameter of about 9 μm to about 20 μm. ### Claim 8 (depends on 1) The nickel-based active material precursor of claim 1, wherein the nickel-based active material precursor comprises plate particles, and wherein major axes of the plate particles are radially arranged. ### Claim 9 (depends on 1) The nickel-based active material precursor of claim 1, wherein the nickel-based active material precursor is a compound represented by Formula 1 or Formula 2: Ni1-x-y-zCoxMnyMz(OH)2-αXα Formula 1 Ni1-x-y-zCoxAlyM(OH)2-αXα, Formula 2 wherein, in Formulae 1 and 2, M is at least one element selected from B, Mg, Ca, Sr, Ba, Ti, V, W, Cr, Fe, Cu, Zr, and Al, X is at least one selected from PO4, BO2, B4O7, B3O5, and F, x≤(1-x-y-z), y≤(1-x-y-z), 0