US 12,009,517 B2
Nickel-manganese composite hydroxide, method for producing the same, positive electrode active material for nonaqueous electrolyte secondary battery, method for producing the same, and nonaqueous electrolyte secondary battery
Haruki Kaneda, Niihama (JP); Yuki Koshika, Niihama (JP); and Takaaki Ando, Niihama (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Filed on Apr. 13, 2023, as Appl. No. 18/134,130.
Application 18/134,130 is a division of application No. 17/511,062, filed on Oct. 26, 2021, granted, now 11,658,297.
Application 17/511,062 is a division of application No. 16/320,601, granted, now 11,296,316, issued on Apr. 5, 2022, previously published as PCT/JP2017/027538, filed on Jul. 28, 2017.
Claims priority of application No. 2016-150505 (JP), filed on Jul. 29, 2016.
Prior Publication US 2023/0253559 A1, Aug. 10, 2023
Int. Cl. H01M 4/505 (2010.01); C01G 53/00 (2006.01); C01G 53/04 (2006.01); H01M 4/525 (2010.01); H01M 4/86 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/505 (2013.01) [C01G 53/00 (2013.01); C01G 53/006 (2013.01); C01G 53/04 (2013.01); C01G 53/50 (2013.01); H01M 4/525 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/11 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/19 (2013.01); C01P 2006/40 (2013.01); H01M 2004/8689 (2013.01); H01M 10/0525 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for producing a nickel-manganese composite hydroxide represented by General Formula (1): NixMnyMz(OH)2+α in Formula (1), M is at least one element selected from Co, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, Fe, and W; and x, y, z, and a satisfy 0.1≤x≤0.9, 0.05≤y≤0.8, 0≤z≤0.8, x+y+z=1.0, and 0≤α≤0.4 and containing a secondary particle formed of a plurality of flocculated primary particles;
the method comprising a crystallization process of forming the nickel-manganese composite hydroxide by neutralizing a salt containing at least nickel and a salt containing at least manganese in a reaction aqueous solution; and
in the reaction aqueous solution in the crystallization process, a dissolved oxygen concentration is adjusted to fall within a range of at least 0.2 mg/L and up to 4.6 mg/L, and a dissolved nickel concentration is adjusted to fall within a range of at least 700 mg/L and up to 1,500 mg/L.