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:
Aug. 26, 2025
Filed:
Mar. 19, 2024
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
Provided are a secondary battery, a battery module, a battery pack, and an electric device. The secondary battery includes: a positive electrode sheet and a non-aqueous electrolyte, where the positive electrode sheet includes a cathode active material with a core-shell structure, and the cathode active material includes a core and a shell covering the core; the core has a chemical formula of LiMnAPRO; where the first coating layer includes a crystalline pyrophosphate LiMPOand/or a crystalline pyrophosphate M(PO), the second coating layer includes a crystalline phosphate XPO, and the third coating layer is carbon; and the non-aqueous electrolyte includes a first lithium salt and a first additive, where the first lithium salt includes one or more selected from the group consisting of LiN(CFSO)(CFSO) and Li(FSO)N, where m and n each are a positive integer.