US 11,873,234 B2
Positive electrode active material precursor for non-aqueous electrolyte secondary battery, and method of manufacturing positive electrode active material precursor for non-aqueous electrolyte secondary battery
Kentaro Sogabe, Ehime (JP); and Kenji Tashiro, Ehime (JP)
Assigned to SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 16/766,859
Filed by SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed Nov. 27, 2018, PCT No. PCT/JP2018/043645
§ 371(c)(1), (2) Date May 26, 2020,
PCT Pub. No. WO2019/107374, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 2017-228250 (JP), filed on Nov. 28, 2017.
Prior Publication US 2020/0299148 A1, Sep. 24, 2020
Int. Cl. C01G 53/00 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC C01G 53/42 (2013.01) [C01G 53/006 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A positive electrode active material precursor for a non-aqueous electrolyte secondary battery, the positive electrode active material precursor comprising:
nickel composite hydroxide particles, wherein
a cross section of each nickel composite hydroxide particle includes voids,
greater than or equal to 50% to less than or equal to 100% of the nickel composite hydroxide particles have
a ratio of an area of the voids to the cross section of the nickel composite hydroxide particle is less than or equal to 5.0%; and
a circular region having a radius of 1.78 μm is set at a position where a ratio of an area of the voids to the circular region is maximum, on the cross section of the nickel composite hydroxide particle, and
the ratio of the area of the voids to the circular region is less than or equal to 20%.