无机材料学报2013，Vol.28Issue(2)：217-223,7.DOI:10.3724/SP.J.1077.2013.12180
球磨CeMg12+100wt％Ni+Ywt％TiF3(Y=0、3、5)合金微观结构及电化学储氢性能
Microstructure and Electrochemical Hydrogen Storage Characteristics of CeMg12+100wt％Ni +Ywt％TiF3 (Y=0, 3, 5) Alloys Prepared by Ball Milling
摘要
Abstract
The nanocrystalline and amorphous CeMg12+100wt%Ni+ywt%TiF3(Y=0, 3, 5) alloy samples were synthesized by ball milling technology. The infulence of TiF3 on microstructure and electrochemical properties of milling alloys were investigated. The electrochemical performance of prepared alloy samples was studied through discharge capacity, cycle stability and electrochemical kinetic, meantime. By using electrochemical PCT (pressure-concentration-isotherm) curves the change law of electrochemical performance of ball-milled alloys was further explained from the view of thermodynamics. The result showed that TiF3 was helpful for enhancing the nanocrytstalline and glass forming ability of milled CeMg12+100wt%Ni+ywt%TiF3(Y=0, 3, 5) hydrogen storage alloys, improving the electrochemical and kinetic properties. On the other hand, in milling process, addition of TiF3 reduced the hot stability of alloy hydride to some degree, accelerating the electrochemical dehydriding reaction.关键词
储氢合金/热力学性能/非晶纳米晶/电化学PCTKey words
hydrogen alloy/ thermodynamic property/ nanocrystalline and amorphous/ electrochemical PCT分类
矿业与冶金引用本文复制引用
胡锋,张羊换,张胤,侯忠辉,董忠平,邓磊波..球磨CeMg12+100wt％Ni+Ywt％TiF3(Y=0、3、5)合金微观结构及电化学储氢性能[J].无机材料学报,2013,28(2):217-223,7.基金项目
国家自然科学基金(50871050) （50871050）
