CoO掺杂对贮氢电极性能影响的研究  

Study of performances of hydrogen storage electrode modified with CoO

作　　者：赵东江[1] 马松艳[1] 

机构地区：[1]绥化学院化学系,黑龙江绥化152061

出　　处：《实验技术与管理》2007年第11期26-27,65,共3页Experimental Technology and Management

基　　金：黑龙江省教育厅科学技术研究项目资助(10511195)

摘　　要：研究了掺杂CoO的贮氢电极Mm0.8La0.2Ni4.0（MnCoAl）1.0的电化学性能。实验结果表叫，掺杂CoO可以改善电极表面的电催化活性，从而增火电极的放电容量，提高充电效率和电荷保持能力、降低放电过电位，提高循环稳定忡。随着CoO掺杂量的增加，电极的放电容量虽逐渐增大，但降低了电极快速放电能力.The performances of the hydrogen storage electrode Mm0.8La0.2 Ni4.0 （MnCoAl）1.0 （ Mm： mischmetal） modified by mixing it with CoO are studied. The results show that the discharge capacity, charge efficieney and charge retention of the modified electrode are greatly increased, the overpotential is reduced and the cycling stability is enhanced due to the improvement of the electrocatalytic activity of the electrode. The discharge capacity of the modified electrode is gradually increased by inereasing CoO contents; however, the high-rate dischargeability is evidently reduced.

关 键 词：贮氧电极 电化学性能 金属氧化物 

分 类 号：O644.12[理学—物理化学]