作　　者： ; ; ; ; ;

机构地区： 桂林电子工业学院

出　　处： 《功能材料》 2004年第3期322-323,327,共3页

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： 球磨 非晶 放电容量

领　　域： [电气工程]