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. 18, 2025
Filed:
Oct. 26, 2021
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Zeli Wu, Ningde, CN;
Changlong Han, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
The application provides a secondary battery and a device including the same. The secondary battery includes a negative electrode plate that includes a negative electrode film, where the negative electrode film includes a negative electrode active material; electrolyte that includes an electrolyte salt, an organic solvent and an additive, where the negative electrode active material includes a silicon-based material; the organic solvent includes dimethyl carbonate (DMC); and the additive includes one or more of compound shown in Formula 1 as discloses in the application, where, Ris selected from one of C2˜C4 alkylene or halogenated alkylene, C2˜C4 alkenylene or halogenated alkenylene, C6˜C18 arylene and derivatives thereof. Under the premise of having a high energy density, the secondary battery and the device including the same according to the application can also have good high-temperature cycle performance and high-temperature storage performance.