摘要
采用沉淀法制备了作为锂离子电池负极材料的纳米锡铜复合氧化物粉末,并用X射线衍射对其结构进行了分析、透射电镜对其形貌进行了表征、充放电和循环伏安法等对其电化学性能进行了测试.结果表明:采用沉淀法可以制备出颗粒粒度较均匀、尺寸为90nm的锡铜复合氧化物;充放电30次到50次,锡铜复合氧化物放电容量由254.4mAh/g衰减到241.1mAh/g,放电容量保持率较高(95%),说明纳米锡铜复合氧化物具有较高的放电容量和良好的循环性能。
Nanocomposite oxides materials（SnO2-CuO） as anode materials for lithium-ion batteries were synthesized via precipitation method.The crystalline structure and the electrochemical performance of as-synthesized samples were investigated.The results show that the nanocomposite oxides materials are SnO2-CuO nanocomposites with diameter of about 90nm.The SnO2-CuO nanocomposites exhibit excellent electrochemical performance.After charge-discharged from 30 times to 50 times,the discharge capacity decreases from 254.4 mAh/g to 241.1 mAh/g,and the capacity retention is about 95%.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第7期729-732,共4页
Journal of Inorganic Materials
基金
新疆维吾尔自治区高校科研计划重点项目(XJEDU2007I43)
关键词
纳米锡铜复合氧化物
沉淀法
负极材料
SnO2-CuO composite oxides
precipitation method
anode material
