用交流阻抗谱结合循环伏安曲线研究了LiMn2O4粉末微电极在充放电循环及贮存情况下,LiMn2O4/LiPF6-(EC+DEC)溶液界面性质变化.结果表明,LiMn2O4经充放电循环,其表面膜电阻及膜电容在循环初期增加显著,但后期变化不大,界面电荷传递电阻显著增加而界面电容变化不明显;经贮存,其膜电阻在贮存初期减小,后期反而稍有增加,界面电荷传递电阻呈增加趋势,尤其在初期增加幅度较大,膜电容及界面电容变化不明显.对引起这些界面参数变化的可能原因进行了解释.
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