Double-salt electrolyte for Li-ion batteries operated at elevated temperatures

Long Chen,Jianhao Lu,Yibo Wang,Pan He,Shaobo Huang,Yan Liu,Yanzhou Wu,Gaoping Cao,Li Wang,Xiangming He,Jingyi Qiu,Hao Zhang

Social Science Research Network（2022）

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摘要

•Double-salt electrolyte realizes both no Fe dissolution and highly stable SEI in LiFePO4-based battery at 70°C.•A strategy of building both superior cathode/electrolyte and anode/electrolyte interfaces buy multi-component salts is proposed.•Double-salt electrolyte enables commercial 18650-type LiFePO4/graphite battery shows excellent performance at elevated temperatures.

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关键词

Liquid electrolytes,High temperature,Fe dissolution,Solid electrolyte interfaces (SEI),Thermal safety

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