Patent ID: 11962005
Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 0:
1. A positive electrode active material for use in a non-aqueous electrolyte secondary battery, the positive electrode active material comprising:
a lithium manganese composite oxide having a spinel-type crystal structure, wherein
the lithium manganese composite oxide includes secondary particles in which a plurality of primary particles is aggregated,
an average particle diameter of the secondary particles based on a SEM image is 10 μm or more and 20 μm or less,
an average particle diameter of the primary particles based on a SEM image is 4 μm or more and 8 μm or less, and
nickel atoms are provided in a surface layer portion of the secondary particles.