新型复合贮氢合金Zr_(0.9)Ti_(0.1)(Ni,Co,Mn,V)_(2.1)的制备与电化学性能  

Preparation and electrochemical properties of new composite hydrogen storage alloy Zr_(0.9) Ti_(0.1) (Ni, Co, Mn, V)_(2.1)

作　　者：文明芬[1] 翟玉春[1] 佟敏[2] 陈廉[2] 郑华[1] 马荣俊[3] 

机构地区：[1]东北大学材料与冶金学院,沈阳110006 [2]中国科学院金属研究所,沈阳110015 [3]长沙矿冶研究院,长沙410084

出　　处：《中国有色金属学报》2001年第2期193-197,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家"八六三"计划资助项目! (715 -0 0 4-0 2 33)

摘　　要：采用熔铸方法制备母合金Zr0 .9Ti0 .1(Ni,Co ,Mn ,V) 2 .1,进而在母合金基础上添加吸氢剂B ,利用球磨制得 4种复合贮氢合金。X射线衍射结果表明 ,随着球磨时间的增加 ,复合合金由晶态转化为非晶态 ;电化学测试结果表明 ,复合合金经过 1～ 2次球磨就能完全活化 ,具有很好的活化性能 ;在 6 0mA/g电流下 ,复合贮氢合金C和D的稳定容量均可达到 44 0mA·h/ g左右 ,比母合金高出 80mA·h/ g ;但随着球磨时间的延长 ,所得的复合合金容量比铸态母合金的还低 ;在 30 0mA/g电流下 ,复合合金D具有较好的循环稳定性 ,经过 2 0 0次循环后其容量仅衰减 3 %。Zr 0.9 Ti 0.1 (Ni, Co, Mn, V) 2.1 as cast alloy was prepared by melting under an argon atmosphere; and then, four composite alloy were prepared by ball milling after adding hydrogen storage agent B. XRD results show that composite alloys become micro crystalline or amorphous from crystalline with ball milling time increasing; the electrochemical results indicate that composite alloys have a good active behavior, which can be active completely with one or two cycles. At 60 mA/g current mass density, the stability capacities of C and D composite alloys could be up to 440 mA·h/g, which are 80 mA·h/g more than that of as cast alloy; at 300 mA/g current mass density, the cycle stability of composite alloy D is worse than those of as cast alloy and LaNi 5 hydrogen storage. [

关 键 词：球磨 活化性能 容量 复合贮氢合金 制备 电化学性能 

分 类 号：TG139.7[一般工业技术—材料科学与工程]