CNTs含量对AB_5型贮氢合金性能的影响  

Influence of CNTs content on the performance of AB_5 hydrogen storage alloys

作　　者：张莹[1] 刘开宇[1] 张伟[1] 段浩[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《电池》2007年第2期101-103,共3页Battery Bimonthly

基　　金：国家留学基金委员会(留金出[2003]3038号);中南大学研究生创新工程

摘　　要：采用机械球磨法制备出不同碳纳米管(CNTs)含量的AB5型贮氢合金。研究了CNTs含量对贮氢合金的微观结构及电化学性能的影响。结果发现:CNTs的加入改善了贮氢合金的性能。含15%CNTs的贮氢合金的首次放电比容量达到了311 mAh/g,比AB5合金提高了21%;200次循环后,放电比容量仍有280 mAh/g。AB5 type hydrogen storage alloys with different carbon nanotubes（CNTs） contents were synthesized by mechanical ball milling method. The effects of the CNTs contents on the mlerostrueture and the electroehemleal performance of the hydrogen storage alloys were studied. The results showed that the performance of hydrogen storage alloys was improved by adding CNTs. When the CNTs content was 15%, the specific capacity of the composite hydrogen storage alloys at the first discharge was 311 mAh/g, which was enhanced 21% as compared with that of the AB5 alloys, and the specific discharge capacity retained 280 mAh/ g after 200 cycles.

关 键 词：碳纳米管(CNTs) 球磨 贮氢合金 

分 类 号：TM910.4[电气工程—电力电子与电力传动]