Electrochemical properties and lithium ion solvation behavior of sulfone–ester mixed electrolytes for high-voltage rechargeable lithium cells
作者： Yuu Watanabe , Shin-ichi Kinoshita , Satoshi Wada , Keiji Hoshino , Hideyuki Morimoto
DOI: 10.1016/J.JPOWSOUR.2008.01.006
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摘要: Sulfone–ester mixed solvent electrolytes were examined for 5V-class high-voltage rechargeable lithium cells. As the base-electrolyte, sulfolane (SL)–ethyl acetate (EA)(1: 1 mixing volume ratio) containing 1M LiBF4 solute was investigated. Electrolyte conductivity, electrochemical stability, Li+ ion solvation behavior and cycleability of lithium electrode were evaluated. 13C NMR measurement results suggest that Li+ ions are solvated with both SL and EA. Charge–discharge cycling efficiency of lithium anode in SL–EA electrolytes was …
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