纳米铜镍复合氧化物的制备与电化学性能  

Preparation and electrochemical properties of copper-nickel nanocomposite oxides material

作　　者：胡文胜[1] 刘斌[1] 李亚娟[1] 

机构地区：[1]新疆教育学院,新疆乌鲁木齐830043

出　　处：《电源技术》2014年第8期1462-1464,共3页Chinese Journal of Power Sources

基　　金：新疆维吾尔自治区自然科学基金项目(2012211A105)

摘　　要：采用水热法制备了锂离子电池负极材料纳米铜镍复合氧化物粉末,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,充放电和循环性能等对其电化学性能进行了测试。结果表明,采用水热法可以制备出颗粒粒度分布较集中,尺寸为15 nm的铜镍复合氧化物;充放电过程中,从40周到50周,铜镍复合氧化物放电比容量由386mAh/g衰减到326 mAh/g,放电容量保持率较高(85%),说明纳米铜镍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 （CuO-NiO） as anode materials for lithium-ion batteries were synthesized by hydrothermal method.The crystalline structure,morphology and electrochemical performance of the samples were investigated by XRD,TEM,charge and discharge and cycle performance tests.The results show that the nanocomposite oxides materials （CuO-NiO） with 15 nm and intensely distributed particle size can be prepared by this method.The sample has high discharge capacity and excellent electrochemical performance：from the 40th cycle to the 50th cycle,the discharge specific capacity decreased from 386 to 326 mAh/g,and the discharge capacity retention is up to 85％.

关 键 词：纳米铜镍复合氧化物 水热法 负极材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]