Ni_(0.67)Mg_(0.33)O贮锂性能的研究  

Study of Electrochemical Lithium Intercalation Performance of Ni_(0.67)Mg_(0.33)O

作　　者：黄镇财[1] 陈茂惠[1] 吴国涛[1] 尤金跨[1] 林祖赓[1] 

机构地区：[1]厦门大学化学系固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《电化学》2003年第1期19-22,共4页Journal of Electrochemistry

基　　金：福建省自然科学基金 (E0 0 1 0 0 0 2 )资助

摘　　要：　通过溶胶-凝胶法制备了Ni-Mg-O及作为对照物的NiO样品,研究了其电化学嵌锂性能,并对样品进行了XRD结构表征,Rietveld精化以及贮锂性能测试.结果表明:Ni-Mg-O电极由于Mg的掺入而抑制了其中Ni2+的还原,导致材料的比容量降低.但同时又因该样品形成均一的固溶体使得NiO分散效果较好,从而改善其循环性能.In the present work, Ni0.67Mg0.33O and NiO were produced by sol_gel method, and characterized by XRD, a rietveld refinement and the discharge/charge test.It was found that the magnesium_doping restrained the reduction of Ni and decreased the reversible capacity for the sample of Ni0.67Mg0.33O. But the formation of the solid solution after the magnesium_doping facilitated the high dispersion of NiO, and accordingly improved the electrochemical performance.

关 键 词：Ni0.67Mg0.33O 贮锂性能 Rietveld结构精化 锂离子电池 负极材料 镍镁复合氧化物 

分 类 号：TM911[电气工程—电力电子与电力传动]