电源技术2018，Vol.42Issue(3)：326-328,387,4.
锂离子电池Si/C/G复合负极材料的制备及性能研究
Preparation of silicon/carbon/graphite composite anode material for lithium-ion battery and its properties
摘要
Abstract
A novel Si/C composite negative electrode for lithium ion batteries was obtained by pyrolyzing the mixture of polyvinylpyrrolidone,nano-Si powder and artificial graphite particles.The influence of thermal decomposition temperature on structures,morphology and electrochemical properties of the composites were studied through XRD,SEM,TEM and constant current charge/discharge test method.When the thermal decomposition temperature is 600 ℃,the comprehensive electrochemical properties of Si/C/graphite composite cathode material synthesis is better.The first discharge specific capacity can reach 953.5 mAh/g and the first coulombic efficiency can reach 85.3％ at 100 mA/g.In addition,its retention capacity is 87.2％ after 50 cycles.It demonstrates that the carbon-coating structure can be obtained by pyrolyzing the polyvinylpyrrolidone,as well as the graphite matrix which will improve the electrochemical performance of the silicon-based anodes effectively.关键词
锂离子电池/Si/C/石墨复合材料/负极材料/喷雾干燥/电化学性能Key words
lithium-ion battery/Si/C/graphite composite/anode material/spray drying/electrochemical properties分类
信息技术与安全科学引用本文复制引用
孙文,肖方明,唐仁衡,王英,孙泰..锂离子电池Si/C/G复合负极材料的制备及性能研究[J].电源技术,2018,42(3):326-328,387,4.基金项目
广东省自然科学基金(2014A030308015) （2014A030308015）
广东省省级科技计划项目(2015B010116002) （2015B010116002）
