Title:
NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM-ION BATTERY AND LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/006563
Kind Code:
A1
Abstract:
A non-aqueous electrolyte solution for a lithium-ion battery and a lithium-ion battery. The non-aqueous electrolyte solution for a lithium-ion battery comprises an unsaturated phosphate compound and a sulfone compound. The sulfone compound comprises a cyclic sulfone compound and/or a straight-chain sulfone compound. The unsaturated phosphate compound has a structure as represented by formula I. The cyclic sulfone compound has a structure as represented by formula II. The straight-chain sulfone compound has a structure as represented by formula III. According to the non-aqueous electrolyte solution, an unsaturated phosphate compound and a sulfone compound are both added to the electrolyte solution, so as to form a protective film which is even in components, appropriate in thickness, and high in density on the electrode interface; the combination of the two compounds enables the electrolyte solution to have a higher stability at the positive electrode, and brings an excellent high temperature performance and cycling performance to the battery; moreover, the combination of the two compounds enables the battery to maintain low impedance, so as to obtain an excellent low temperature performance. The electrolyte solution lays the foundation for the preparation of high-quality power battery.
Inventors:
LIN MUCHONG (CN)
SHI QIAO (CN)
ZENG CHANG'AN (CN)
SHI QIAO (CN)
ZENG CHANG'AN (CN)
Application Number:
PCT/CN2016/113008
Publication Date:
January 11, 2018
Filing Date:
December 29, 2016
Export Citation:
Assignee:
SHENZHEN CAPCHEM TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0567; H01M10/0525
Foreign References:
| CN105140561A | 2015-12-09 | |||
| CN103151559A | 2013-06-12 | |||
| CN104798245A | 2015-07-22 | |||
| CN103730263A | 2014-04-16 | |||
| CN104300174A | 2015-01-21 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
Download PDF: