Patent ID: 11862796
Assignee: NICHIA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A positive-electrode active material for a non-aqueous electrolyte secondary battery, comprising:
lithium transition metal composite oxide particles having an average particle diameter based on SEM observation DSEM that is from 0.5 μm to less than 3 μm, and a ratio D50/DSEM that is from 1.6 to 2.1 where D50 is a particle diameter corresponding to 50% in its volume-based cumulative particle size distribution,
wherein the lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese,
wherein the lithium transition metal composite oxide particles contain lithium transition metal composite oxide particles onto surfaces of which a substance containing niobium is adhered,
wherein the lithium transition metal composite oxide particles have a ratio D95/D5 that is from 2.5 to 3.8, and
wherein the lithium transition metal composite oxide particles have a ratio D90/D10 that is from 2.0 to 2.5.