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:
Nov. 23, 2021
Filed:
Jul. 02, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takuji Tsujita, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Shuhei Uchida, Osaka, JP;
Ryuichi Natsui, Osaka, JP;
Abstract
A cathode active material includes a lithium composite oxide and a covering material which covers a surface of the lithium composite oxide. The lithium composite oxide is a multi-phase mixture including a first phase having a crystal structure which belongs to a space group C2/m and a second phase having a crystal structure which belongs to a space group R-3m. The lithium composite oxide has an integral intensity ratio I/Iof not less than 0.05 and not more than 1.15, where the integral intensity ratio I/Iis a ratio of an integral intensity Ito an integral intensity I. The integral intensity Iis an integral intensity of a first peak which is a maximum peak present within a range of a diffraction angle 2θ of not less than α° and not more than β° in an X-ray diffraction pattern of the lithium composite oxide.