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电化学  2013 

力曲线用于硅负极材料表面膜的研究

DOI: 10.13208/j.electrochem.130357, PP. 530-536

Keywords: 薄膜硅负极,固态电解质相表面膜,原子力显微镜,力曲线,锂离子电池

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Abstract:

利用原子力显微镜(AFM)力曲线模式来研究锂离子电池硅负极材料在含碳酸亚乙烯酯添加剂(VC)电解质首周循环时固态电解质相表面膜(SEI膜)的三维结构.测试表明SEI膜具有多层结构,同时得到SEI膜厚度、杨氏模量以及覆盖度在首周循环过程中的变化,采用三维图呈现了硅材料表面膜的分布.

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