Organic Batteries Operated at -70°C

被引：425

作者：

Dong, Xiaoli ^{[1
,2
]}

Guo, Zhaowei ^{[1
,2
]}

Guo, Ziyang ^{[1
,2
]}

Wang, Yonggang ^{[1
,2
]}

Xia, Yongyao ^{[1
,2
]}

机构：

[1] Fudan Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, Inst New Energy, Dept Chem, Shanghai 200433, Peoples R China

[2] Fudan Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, Inst New Energy, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

JOULE | 2018年 / 2卷 / 05期

基金：

中国国家自然科学基金;

关键词：

LOW-TEMPERATURE PERFORMANCE; LITHIUM-ION BATTERIES; ELECTROLYTES; CELLS; SOLVATION; INTERFACE; GRAPHITE; CATHODES; OXYGEN;

D O I：

10.1016/j.joule.2018.01.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Low-temperature operation is a great challenge facing rechargeable batteries, and insufficient ionic conductivity and freezing of electrolyte are generally considered as the main reasons for this issue. Herein, an ethyl acetate-based electrolyte with a sufficient ionic conductivity of 0.2 mS cm(-1) at the ultra-low temperature of -70 degrees C is first used to fabricate intercalation compounds-based Li-ion batteries (LIBs) and an organic electrodes-based rechargeable battery, respectively, to clarify their low-temperature behavior- It is demonstrated that the LIBs cannot work at -70 degrees C because of the sluggish desolvation of Li+. However, the rechargeable battery using organic electrodes can work well at such low temperature and retains similar to 70% of capacity at room temperature, owing to the fast kinetics of charge storage on the surface groups or in the large interstitial space of organic solids. These results indicate a new way for developing low-temperature batteries.

引用

页码：902 / 913

页数：12

共 48 条

[1]

Lithium-ion transfer at the interface between lithium-ion conductive ceramic electrolyte and liquid electrolyte - A key to enhancing the rate capability of lithium-ion batteries [J].