第 30卷第 6期 2015年 6月 无机材料学报 Vol. 30 No. 6 Jun., 2015 Journal of Inorganic Materials 文章编号: 1000-324X(2015)06-0647-06 DOI: 10.15541/jim20140633 硅负极添加剂对锂离子电池的影响 冯明燕, 田建华, 刘园园, 单忠强 (天津大学化工学院,天津 300072) 摘 要:选用乙炔黑(AB)、SuperP、VulcanXC-72和 BP2000四种导电剂,研究其物化性能及含量对硅电极电化学性 能的影响;探讨了粘合剂种类和用量对硅电极电化学性能的影响。采用场发射扫描电子显微镜对硅电极的形貌进行 表征;采用恒流充放电测试及循环伏安法对硅电极的电化学性能进行测试。结果表明 ,导电剂 SuperP具有良好的 导电性、适中的比表面积 (75.8 m2/g)和颗粒尺寸 (39.2 nm), 有利于提高硅负极的循环性能及倍率循环性能。采用 15wt%的导电剂 SuperP与 15wt%的粘合剂 CMC所制备的电极循环 50次后可逆比容量保持在 1143.8 mAh/g。 关 键 词:锂离子电池;硅负极;导电剂;粘合剂 中图分类号: TM911 文献标识码: A Effect of Silicon Anode Additives on Lithium Ion Batteries FENG Ming-Yan, TIAN Jian-Huan, LIU Yuan-Yuan, SHAN Zhong-Qiang (School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China) Abstract: Silicon anode of lithium ion batteries was fabricated with different binders and conductive additives (acetylene black, SuperP, VulcanXC-72, BP2000), and the electrochemical performance was investigated in detail. The effect of morphology and addition amount of conductive additives on the electrochemical performance of silicon elec- trode were investigated. Then, the appropriate type and content of binder in the silicon electrode was optimized. The morphology of silicon electrodes were characterized by scanning electron microscope(SEM). Electrochemical per- formances of the silicon electrodes were measured by constant current charge-discharge and cyclic voltammetry(CV). The results shows that SuperP has good electrical conductivity, a suitable