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:
Feb. 22, 2022
Filed:
Dec. 22, 2020
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Shushi Dou, Ningde, CN;
Chunhua Hu, Ningde, CN;
Tiancheng Yi, Ningde, CN;
Yao Jiang, Ningde, CN;
Chengdu Liang, Ningde, CN;
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Abstract
The present application provides a lithium-ion battery and an apparatus, the lithium-ion battery includes an electrode assembly and an electrolytic solution, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separation film. A positive electrode active material in the positive electrode sheet includes LiCoMOQ, and the positive electrode active material is a mixture of large particles LiCoMOQand small particles LiCoMOQ; an average particle size D50 of the large particles LiCoMOQis 10 μm-17 μm, and an average particle size D50 of the small particles LiCoMOQis 2 μm-7 μm. The electrolytic solution contains an additive A that is a polynitrile six-membered nitrogen-heterocyclic compound with a relatively low oxidation potential. The lithium-ion battery has superb cycle performance and storage performance, especially under high-temperature and high-voltage conditions.