Abstract
ABSTRACTThe physicochemical properties of glyme-Li[FSA] (FSA: bis(fluorosulfonyl)amide) equimolar complexes were investigated. The self-diffusion coefficients of glymes and Li+ as determined by pulsed-field gradient spin-echo nuclear magnetic resonance spectroscopy in equimolar complexes were almost identical, suggesting that all of the glyme molecules coordinated with Li+. Electrochemical characterization revealed that the oxidative stability of glyme molecules was enhanced by complexing with Li+. Using [Li(glyme)1][FSA] electrolytes and a LiFePO4cathode, a lithium secondary battery could be stably operated for more than 100 cycles at room temperature.
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