光催化剂修饰对AB5储氢合金电化学性能的影响  

Influence of photocatalyst on the performance of LaNi5 hydrogen storage alloy

作　　者：李民善[1] 唐有根[1] 王佳力[1] 杨海华[1] 万伟华[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《功能材料》2007年第A04期1602-1605,共4页Journal of Functional Materials

摘　　要：通过向低钴型AB，储氢合金中添加一定量的尖晶石型光解水制氢催化剂，成功制备出光催化储氢合金电极（PHSA）。研究了光催化剂修饰对低钴型AB5储氢合金的活化性能、电化学容量、高倍率充放电性能以及循环性能的影响。结果表明：在紫外光照下经光催化剂修饰的AB，储氢合金活化性能优于无光照时；与空白相比，其高倍率充放电性能和循环性能都得到了提高，其中添加量为20％cat的光催化储氢合金综合性能最好。Photocatalyst hydrogen storage alloys（PHSA） with different photocatalyst content were synthesized by mechanical blend method. The effects of the photocatalyst on the electrochemical performance of the PHSA were studied. The results showed that the activation performance of PHSA improved when UV irradiation presences. The median discharge potential of PHSA increased and the high charg-discharg rate performance and cycle performance improved compared with that of the AB5 alloys. The PHSA showed best integration performance when the photocatalyst content was 20%.

关 键 词：光催化剂 储氢合金 电化学性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]