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电化学  2014 

等离子体辅助球磨Si-C复合负极材料及其电化学性能研究

DOI: 10.13208/j.electrochem.130227, PP. 51-55

Keywords: 锂离子电池,负极,硅碳复合物,放电等离子体,高能球磨

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Abstract:

首次采用介质阻挡放电等离子体辅助高能两次球磨制得Si-C复合材料,其结构为微纳尺度硅颗粒均匀分散于微米级碳基体上.Si-C复合电极首周期循环放电容量为1259mAh·g-1,20和100周期循环的容量分别为474和396mAh·g-1.该电极充放电曲线和交流阻抗测试的结果表明,复合材料中的硅和碳均参与锂离子嵌/脱反应,且其电荷传导阻抗明显低于纯Si.

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