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电化学  2014 

碳膜夹层锂硫电池的电化学性能

DOI: 10.13208/j.electrochem.130427, PP. 105-109

Keywords: 锂硫电池,导电碳膜,夹层,电化学性能

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Abstract:

选取Super-P(SP)、KB或MWCNTs导电碳膜夹层,并置于硫电极与隔膜间组装成扣式锂硫电池.相关评估结果表明,碳膜夹层可显著提高锂硫电池循环性能,硫电极(载硫量为80%,bymass,下同)循环40周后比容量均在800mAh·g-1以上.上述三种碳膜的物理性质有较大差异,导致相应电池具有不同电性能.KB碳膜夹层电池呈现较强的电化学极化效应;SP碳膜夹层电池循环初期可释放出最高的比容量,而循环稳定性较差;MWCNTs碳膜可视为较适宜的导电碳夹层材料.

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