Patent ID: 11955630
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT 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 comprising:
a lithium composite oxide which includes:
Mn; and
at least one selected from the group consisting of F, Cl, N, and S,

wherein the lithium composite oxide has a crystalline structure which belongs to the space group Fd-3m, and
the following formula (I) is satisfied,

1.40≤intensity ratio IMn1/IMn2≤1.90  (I)

where the intensity ratio IMn1/IMn2 is a ratio of an intensity IMn1 to an intensity IMn2,
the intensity IMn1 is an intensity of a first proximity peak of the Mn in a radial distribution function of the Mn included in the lithium composite oxide, and
the intensity IMn2 is an intensity of a second proximity peak of the Mn in the radial distribution function of the Mn included in the lithium composite oxide.