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:
Dec. 31, 2024
Filed:
Oct. 08, 2021
Honda Motor Co., Ltd., Tokyo, JP;
Kazuyuki Sato, Saitama, JP;
Takeshi Fujino, Saitama, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
To provide a positive electrode active material capable of improving cycle characteristics of a lithium ion secondary battery and achieving a desirable discharge capacity. A positive electrode active material that is an aggregate of lithium compounds each including a lithium-containing transition metal oxide, includes particles having a surface on which a solid film including a plurality of types of lithium salts is formed. The solid film preferably includes a fluorine compound and a phosphorus compound. The solid film preferably contains 70 mol % or more of fluorine atoms with respect to the total number of moles of the fluorine atoms and phosphorus atoms.