纳米Mg_2Ni-Ni非晶合金的球磨制备和电极性能  

Nano-amorphous Mg_2Ni-Ni alloys synthesized by ball milling and its electrochemical characteristics

作　　者：王仲民[1] 周怀营[1] 顾正飞[1] 成刚[1] 朱敏[2] 

机构地区：[1]桂林电子工业学院材料科学与工程中心,广西桂林541004 [2]华南理工大学纳米功能材料研究室,广东广州510640

出　　处：《功能材料》2004年第3期322-323,327,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50171024);广西自治区自然科学基金资助项目(0135053)

摘　　要：　球磨Mg2Ni合金粉和Ni粉制得纳米Mg2Ni Ni非晶合金。用XRD和SEM分析表征了球磨过程中的相和结构的变化。模拟电池测试结果表明,Mg2Ni/Ni复合粉的首次放电容量随球磨时间的延长有明显提高。当球磨150h形成了纳米Mg2Ni Ni非晶合金,其放电容量和电极循环性能得到明显改善。Nano-amorphous Mg2Ni/Ni alloys were synthesized by ball milling of the powders of Mg2Ni alloys and Ni. XRD and SEM were used to characterize the microstructure and phase of milled Mg2Ni/Ni alloys. Electrochemical characteristics were evaluated by simulated battery testing with the alloys as negative electrode. It was found that the discharge capacity of Mg2Ni/Ni alloys, especially initial discharge capacity, is obviously improved with the increase of milling time. The enhancements in discharge capacity and cycle life were observed in nano-amorphous Mg2Ni/Ni alloys synthesized by ball milling for 150 h.

关 键 词：Mg2Ni-Ni 球磨 非晶 放电容量 

分 类 号：TM912.2[电气工程—电力电子与电力传动]