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电化学  2006 

磷酸三甲酯和碳酸亚乙烯酯对锂离子电池的复合作用

, PP. 388-393

Keywords: 锂离子电池,磷酸三甲酯(TMP),碳酸亚乙烯酯(VC),SEI膜

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Abstract:

应用循环伏安、交流阻抗、扫描电子显微镜和锂离子电池性能检测装置研究了阻燃添加剂磷酸三甲酯(TMP)和成膜添加剂碳酸亚乙烯酯(VC)对锂离子电池的复合作用.结果表明,复合使用TMP和VC不仅能提高电池的安全性而且能改善电池的循环性能,原因可能是在电池首次充放电过程中VC优先还原,还原产物在负极表面聚合形成良好的SEI膜,有效地制约了因TMP在石墨负极表面的分解而造成负极石墨的脱落,同时提高了SEI膜的稳定性.

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