中文摘要：

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．

英文摘要：

Silicon-carbon （Si-C） composites, with microstructure of multi-scaled Si particles being homogenously dispersed in micro-sized carbon matrix, had been prepared by dielectric barrier discharge plasma assisted two-step milling for the first time. The Si-C composite anode had a discharge capacity of 1259 mAh. g~ at the first cycle, while the capacity retained 474 and 396 mAh. g-~ after 20 and 100 cycles, respectively. Charge-discharge curves and AC impedance response indicated that both silicon and carbon phases in the composite anode were involved during the lithiation/delithiation reactions and the electron transport resistance in the Si-C composite anode was much lower than that in the pure Si anode.