Patent ID: 11873234
Assignee: SUMITOMO METAL MINING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
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%.