High-Voltage Resistant Ionic Liquids for Lithium-Ion Batteries

被引：85

作者：

Qi, Haojun ^{[1
]}

Ren, Yongyuan ^{[1
]}

Guo, Siyu ^{[1
]}

Wang, Yuyue ^{[2
]}

Li, Shujin ^{[2
]}

Hu, Yin ^{[1
]}

Yan, Feng ^{[1
]}

机构：

[1] Soochow Univ, Dept Polymer Sci & Engn, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ionic liquids; high voltage resistant; substitutions; electron-donating; lithium-ion battery; ELECTROLYTE COMPONENTS; CATHODE MATERIALS; RECENT PROGRESS; INTERFACE; CAPACITY; CELLS; METAL; TEMPERATURE; STABILITY; MECHANISM;

D O I：

10.1021/acsami.9b16786

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

With the growing demand for high energy and high power density rechargeable lithium-ion batteries, increasing research is focused on improving the output voltage of these batteries. Herein, a series of pyrrolidinium and piperidinium cations with various N-substituents (including cyanomethyl, benzyl, butyl, hexyl, and octyl groups) were synthesized and investigated with respect to their electrochemical stability under high voltages. The influence of substitutions at the N-position of pyrrolidinium and piperidinium cations on their high-voltage resistance was studied by both theoretical and experimental approaches. The voltage resistance was enhanced as the electron-donating ability of the substitutes increased. Furthermore, 1-hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) imide ([C6Py][TFSI]) exhibited the highest decomposition voltage at approximately 5.12 V and showed promising potential in a lithium-ion battery.

引用

页码：591 / 600

页数：10

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