# US 10,483,541 B2 · Method of producing nickel-cobalt composite hydroxide and method of producing positive electrode active material for non-aqueous electrolyte secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,541 B2 - Document ID: US10483541B2 - Status: Granted - Kind: B2 - Application number: 15/588,970 - Filed: 2017-05-08 - Published: 2017-11-09 - Granted: 2019-11-19 - Earliest claimed: 2016-05-09 - Assignees: Nichia Corporation - Applicants: Nichia Corporation - Inventors: Hideki Yoshida; Masato Sonoo; Takahiro Kitagawa - Web page: https://patentgrep.com/patent/US10483541B2 ## 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 53/42: containing alkali metals, e.g. LiNiO2 - C01G 53/502: containing lithium and cobalt - C01G 53/84: Hydroxides - H01M 4/02: Electrodes composed of, or comprising, active material - C01P 2002/85: by XPS, EDX or EDAX data - C01P 2004/04: obtained by TEM, STEM, STM or AFM - H01M 2004/028: {Positive electrodes} - 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 method of producing a nickel-cobalt composite hydroxide includes: preparing a first solution containing nickel ions and cobalt ions; preparing a second solution containing tungsten ions and having a pH of 10 or more; preparing a third solution containing a complex ion-forming factor; preparing a liquid medium having a pH in a range of 10 to 13.5; supplying the first solution, the second solution, and the third solution separately and simultaneously to the liquid medium to obtain a reacted solution having a pH in a range of 10 to 13.5; and obtaining the nickel-cobalt composite hydroxide containing nickel, cobalt, and tungsten from the reacted solution. ## Claims ### Claim 1 A method of producing a nickel-cobalt composite hydroxide, comprising: preparing a first solution containing nickel ions and cobalt ions; preparing a second solution containing tungsten ions and having a pH of 10 or more; preparing a third solution containing a complex ion-forming factor; preparing a liquid medium having a pH in a range of 10 to 13.5; supplying a portion of the first solution to the liquid medium to obtain a seed solution; supplying the first solution, the second solution, and the third solution separately and simultaneously to the seed solution to obtain a reacted solution, the reacted solution having a pH in a range of 10 to 13.5; and obtaining the nickel-cobalt composite hydroxide containing nickel, cobalt, and tungsten from the reacted solution. ### Claim 2 (depends on 1) The method according to claim 1, wherein a concentration of nickel ions in the reacted solution is in a range of 10 ppm to 1000 ppm. ### Claim 3 (depends on 2) The method according to claim 2, wherein a duration of the supplying the first solution is 12 hours to 60 hours. ### Claim 4 (depends on 3) The method according to claim 3, wherein the seed solution contains a composite hydroxide that contains nickel and cobalt. ### Claim 5 (depends on 2) The method according to claim 2, wherein the seed solution contains a composite hydroxide that contains nickel and cobalt. ### Claim 6 (depends on 1) The method according to claim 1, wherein a duration of the supplying the first solution is 12 hours to 60 hours. ### Claim 7 (depends on 6) The method according to claim 6, wherein the seed solution contains a composite hydroxide that contains nickel and cobalt. ### Claim 8 (depends on 1) The method according to claim 1, wherein the seed solution contains a composite hydroxide that contains nickel and cobalt. ### Claim 9 (depends on 1) The method according to claim 1, wherein the nickel-cobalt composite hydroxide has a composition represented by formula (1): Ni1−x−yCox1MyWz(OH)2+p (1) wherein 1M is at least one element selected from the group consisting of Mn, Al, Mg, Ca, Ti, Zr, Nb, Ta, Cr, Mo, Fe, Cu, Si, Sn, Bi, Ga, Y, Sm, Er, Ce, Nd, La, Cd, and Lu, and x, y, z, and p satisfy 0.01≤x≤0.35, 0≤y≤0.35, 0