电沉积乙炔黑/锗材料及其性能研究  

Research on the Properties of Acetylene Black / Ge Prepared by Electrochemical Deposition

作　　者：张译文[1] 李垚[2] 强亮生[1] 郝健[3] 刘旭松[3] 安小坤 赵九蓬[3] 

机构地区：[1]哈尔滨工业大学理学院,哈尔滨150001 [2]哈尔滨工业大学复合材料与结构研究所,哈尔滨150001 [3]哈尔滨工业大学化工学院,哈尔滨150001

出　　处：《表面技术》2014年第6期11-15,共5页Surface Technology

摘　　要：目的提高锂离子电池锗基材料的电化学性能。方法采用电泳和离子液体电沉积制备乙炔黑/锗负极材料,用SEM,Raman和充放电循环等手段表征其结构和性能。结果乙炔黑/锗负极材料在0.2C倍率下循环100次,比容量依然可达到600 m Ah/g以上。结论乙炔黑/锗负极材料的电化学性能明显优于单独锗材料和碳材料。Objective To improve the electrochemical performance of the germanium materials of lithium-ion batteries. Methods Germanium nanoparticles （Ge-NPs） and acetylene black anodes were fabricated through electrodeposition of Ge in the new-generation ionic liquids on the surface of acetylene black which was electrophoretically deposited on a copper current collector. The structure and electrochemical properties were characterized by electron microscopy, Raman spectroscopy and constant current chargedischarge methods. Results The acetylene blaek-Ge nanocomposite exhibited the electrochemical cycling properties of over 600 mAh/g at 0.2C after 100 cycles. Conclusion The electrochemical performance of composite was obviously better than Ge or acetylene black by itself as anode electrode material.

关 键 词：锂离子电池 负极 乙炔黑/锗 电化学性能 

分 类 号：O484.4[理学—固体物理] TM91[理学—物理]