氧化锡/石墨锂离子电池负极材料的研究  

SnO_2/graphite composite material for lithium-ion batteries

作　　者：肖彩英[1] 叶学海[1] 张晓波[1] 付春明[1] 张春丽[1] 于晓微[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《电源技术》2012年第7期957-958,973,共3页Chinese Journal of Power Sources

摘　　要：通过溶胶凝胶法引入石墨材料合成SnO2/石墨复合材料,X射线衍射光谱法(XRD)和扫描电子显微镜法(SEM)研究表明,两种材料的形貌和结构均保持了自身的特点。电性能研究显示石墨材料对改善SnO2的循环性能效果明显。含碳量为80%的复合材料,首次可逆比容量为397.2 mAh/g,库仑效率为80.9%,50次循环之后容量保持率为71.5%。The SnO2/graphite composite material was synthesized by sol-gel. XRD and SEM research indicate that two materials maintained their own characteristic. The electrochemical tests demonstrate that graphite material may enhance the first columbic efficiency and improve the cycle performance of SnO2. The first reversible specific capacity of the compound material （carbon 80%） is 397.2 mAh/g, the first efficiency is 80.9%, and the capacity main- tains 71.5% after 50 cycles.

关 键 词：氧化锡/石墨 锂离子电池 负极材料 

分 类 号：TM912[电气工程—电力电子与电力传动]