Patent ID: 11949100
Assignee: PROTERIAL, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A cathode active material used for a lithium ion secondary battery comprising:
a lithium transition metal composite oxide represented by the following Formula (1):

Li1+aNibCocMndMeO2+α  (1)

where M contains at least one kind of metal elements selected from a group consisting of Al, Ti, Zn, Ga, Zr, Mo, Nb, V, Sn, Mg, Ta, Ba, W and Y; a, b, c, d, e, and a are respectively numbers satisfying the following conditions: −0.04≤a≤0.04, 0.80≤b<1.00, 0.01≤c≤0.04, 0<d<0.20, b+c+d+e=1, −0.2<α<0.2, wherein
c and d in the Formula (1) satisfy 0<c/d≤0.75.