Effect of lithium difluoro(oxalate)borate (LiDFOB) additive on the performance of high-voltage lithium-ion batteries

被引：95
作者：
Hu, Meng [1 ]
Wei, Jinping [1 ]
Xing, Liying [1 ]
Zhou, Zhen [1 ]
机构：
[1] Nankai Univ, Tianjin 300071, Peoples R China
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2012年 / 42卷 / 05期
关键词：
Lithium-ion batteries; LiDFOB; Electrolyte additive; High voltage; CATHODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; ELECTROLYTE ADDITIVES; LICOPO4/C COMPOSITES; LIQUID; CELLS; EXTRACTION; INSERTION; GRAPHITE;
D O I：
10.1007/s10800-012-0398-0
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Lithium difluoro(oxalato)borate (LiDFOB) was investigated as an electrolyte additive for high-voltage lithium-ion batteries in order to decrease the decomposition of the electrolyte. As a typical high-voltage cathode material, LiCoPO4 was tested in the LiDFOB-containing electrolyte, exhibiting higher reversible charge/discharge capacity and better cyclic stability. The effect of LiDFOB on the formation of a stable interphase film was investigated through cyclic voltammetry and X-ray photoelectron spectroscopy. LiDFOB was helpful to form a stable interphase film and passivate the cathode surface; therefore, the decomposition of the electrolyte was inhibited accordingly.
引用
收藏
页码：291 / 296
页数：6
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