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:
Dec. 08, 2020
Filed:
Oct. 26, 2018
Huawei Technologies Co., Ltd., Shenzhen, CN;
Dongguan Aisipu Energy Technology Co., Ltd., Dongguan, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Dongguan Aisipu Energy Technology Co., Ltd, Dongguan, CN;
Abstract
The present application provides a high-temperature lithium-ion battery electrolyte, including a lithium salt, an organic solvent, and a water removal additive. A structural formula of the water removal additive is shown as a formula (1): where Ris a —NCH—(CH)—CN group, and 0<n≤20; Ris a —R—CO—NRRgroup, Ris a —(CH)— group, 0≤m<19, each of Rand Ris one independently selected from H and —(CH)—CHgroups, 0≤x≤19-, and both m and x are integers; and Ris any one selected from H, F, Cl, and Br. The high-temperature lithium-ion battery electrolyte can effectively eliminate trace water in a battery system, restrain HF generation, protect an electrochemical system in a battery, and significantly improve high-temperature storage performance and high-temperature cycling performance of a lithium-ion battery. The present invention further provides a production method for the electrolyte and a high-temperature lithium-ion battery that includes the electrolyte.