Towards Li-Ion Batteries Operating at 80 degrees C: Ionic Liquid versus Conventional Liquid Electrolytes

被引：14

作者：

Oltean, Gabriel ^{[1
]}

Plylahan, Nareerat ^{[2
]}

Ihrfors, Charlotte ^{[1
]}

Wei, Wei ^{[1
]}

Xu, Chao ^{[1
]}

Edstrom, Kristina ^{[1
]}

Nyholm, Leif ^{[1
]}

Johansson, Patrik ^{[2
]}

Gustafsson, Torbjorn ^{[1
]}

机构：

[1] Uppsala Univ, Dept Chem, Angstrom Lab, Box 538, SE-75121 Uppsala, Sweden

[2] Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden

来源：

BATTERIES-BASEL | 2018年 / 4卷 / 01期

关键词：

Li-ion batteries; ionic liquid; elevated temperature;

D O I：

10.3390/batteries4010002

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li-ion battery (LIB) full cells comprised of TiO2-nanotube (TiO2-nt) and LiFePO4 (LFP) electrodes and either a conventional organic solvent based liquid electrolyte or an ionic liquid based electrolyte have been cycled at 80 degrees C. While the cell containing the ionic liquid based electrolyte exhibited good capacity retention and rate capability during 100 cycles, rapid capacity fading was found for the corresponding cell with the organic electrolyte. Results obtained for TiO2-nt and LFP half-cells indicate an oxidative degradation of the organic electrolyte at 80 degrees C. In all, ionic liquid based electrolytes can be used to significantly improve the performance of LIBs operating at 80 degrees C.

引用

页数：6

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