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:
Sep. 01, 2020
Filed:
Jul. 03, 2018
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Xiaomei Wang, Ningde, CN;
Bin Jiang, Ningde, CN;
Chenghua Fu, Ningde, CN;
Jiqiong Liu, Ningde, CN;
Yan Zhou, Ningde, CN;
Jianwei Zhu, Ningde, CN;
Changlong Han, Ningde, CN;
Wenhao Liu, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde, Fujian Province, CN;
Abstract
The present disclosure provides an electrolyte and an electrochemical energy storage device. The electrolyte comprises an electrolyte salt and an additive. The additive comprises a sulfonic ester cyclic quaternary ammonium salt and a fluorocarbon surfactant. Under the combined effect of the sulfonic ester cyclic quaternary ammonium salt and the fluorocarbon surfactant, a dense, uniform and stable passive film can form on a surface of each of a positive electrode film and a negative electrode film of the electrochemical energy storage device, and infiltration capability of the electrolyte on each of the passive film of the positive electrode film and the negative electrode film can be increased at the same time, so as to decrease electrode polarization inside the electrochemical energy storage device and make the electrochemical energy storage device have excellent rate capability, low temperature discharge performance and high temperature storage performance.