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. 16, 2021
Filed:
Feb. 11, 2019
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Jiao Cao, Ningde, CN;
Qifan Zou, Ningde, CN;
Guangbo Lu, Ningde, CN;
Shengwei Wang, Ningde, CN;
Wenzhu Xu, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, CN;
Abstract
The present disclosure provides a lithium-ion battery, and the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material with a chemical formula of LiNiCoMO, the negative active material comprises graphite, the OI value of the positive film represented by OIand the OI value of the negative film represented by OIsatisfy a relationship: 0.05≤OI/OI≤10. By reasonably matching the OI value of the positive film represented by OIand the OI value of the negative film represented by OIand making OI/OIbetween 0.05 and 10, the dynamics performance of the positive electrode plate and the dynamics performance of the negative electrode plate can achieve an optimal match, the lithium-ion battery can have higher charging capability, and also have excellent cycle life and excellent safety performance during the long-term fast charging use.