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:
Jan. 25, 2022
Filed:
Nov. 19, 2019
Positive electrode active material containing lithium composite oxide and battery including the same
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takanori Omae, Osaka, JP;
Ryuichi Natsui, Osaka, JP;
Takayuki Ishikawa, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Abstract
A positive electrode active material contains a lithium composite oxide containing fluorine and oxygen. The lithium composite oxide satisfies 1<Zs/Za<8, where Zs represents a first ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in XPS of the lithium composite oxide, and Za represents a second ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in an average composition of the lithium composite oxide. An XRD pattern of the lithium composite oxide includes a first maximum peak within a first range of 18° to 20° at a diffraction angle 2θ and a second maximum peak within a second range of 43° to 46° at the diffraction angle 2θ. The ratio I/Iof a first integrated intensity Iof the first maximum peak to a second integrated intensity Iof the second maximum peak satisfies 0.05≤I/I≤0.90.