制备与电化学性能
(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)
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60 mA/g电流下，复合贮氢合金C和Ｄ的稳定容量均可达到440 mA·h/g左右，比母合金高出80 mA·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300 mA/g电流下，复合合金D具有较好的循环稳定性，经过200次循环后其容量仅衰减3%。
关键字: Zr0.9Ti0.1(Ni， Co， Mn， V)2.1复合合金；球磨； 活化性能； 容量
new composite hydrogenstorage
alloy Zr0.9Ti0.1(Ni，Co，Mn，V)2.1
（1. School of Materials and Metallurgy，
Northeastern University， Shenyang 110006, P.R.China;
2. Institute of Metal Research， The Chinese Academy of Sciences，
Shenyang 110015, P.R.China;
3. Institute of Changsha Mining and Metallurgy， Changsha 410084, P.R.China）
Abstract:Zr0.9Ti0.1(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 alloysbecome micro-crystalline or amorphous from crystalline with ball-milling timeincreasing; 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 couldbe 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 LaNi5 hydrogen storage.
Key words: Zr0.9Ti0.1(Ni，Co，Mn，V)2.1 composite alloy； ball-milling; active behavior; capacity
