The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2022
Filed:
Sep. 03, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Ryuichi Natsui, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Junko Matsushita, Osaka, JP;
Issei Ikeuchi, Osaka, JP;
Abstract
A positive-electrode active material contains a lithium composite oxide, wherein the lithium composite oxide is a multiphase mixture including a first phase, of which a crystal structure belongs to a space group Fm-3m, and a second phase, of which a crystal structure belongs to a space group Fd-3m; and in an XRD pattern of the lithium composite oxide, the integrated intensity ratio I/Iof a first maximum peak Iwithin a first range of 18 degrees to 20 degrees at a diffraction angle 2θ to a second maximum peak Iwithin a second range of 43 degrees to 46 degrees at the diffraction angle 2θ satisfies 0.05≤I/I≤0.90.