摘要
以金属氧化物和蔗糖为原料,经混合球磨,高温碳热还原制备Sn-Co-M-C(M=Zn,Fe)复合负极材料.采用XRD、SEM测试样品结构,观察样品形貌.电化学性能测试表明,Sn-Co-Zn-C电极首次嵌锂比容量571 mAh·g-1,45次循环后比容量369 mAh·g-1,其比容量和循环寿命好.
The anode materials of Sn-Co-M-C （M--Zn, Fe） composites were prepared by carbothermal re- duction method from metal oxides and sucrose in N2 atmosphere. Their structural and electrochemical proper-ties were studied by XRD, SEM and charge-discharge test. Among them, the Sn-Co-Zn-C composite showed higher specific capacity and good cycle performance. The initial special discharge capacity of 571 mAh·g^-1 could be obtained, while 369 mAh·g^-1 was still kept after 45 cycles.
出处
《电化学》
CAS
CSCD
北大核心
2012年第4期328-331,共4页
Journal of Electrochemistry
基金
国家自然科学基金项目(No.200933005
No.20903077)
国家973计划项目(No.2009CB220102)资助
关键词
碳热还原法
锂离子电池
负极材料
Sn基合金
： carbothermal reduction method
lithium-ion battery
cathode material
Sn-based alloy
