碱性燃料电池氧电极的研究——Ni,Bi,Hg 对 Ag/C 催化剂活性的影响  

Study of the oxygen electrode of alkaline fuel cells ——effect of Ni,Bi,Hg on the activity of Ag/C catalyst

作　　者：滕加伟[1] 金丽华 唐伦成[2] 

机构地区：[1]大连理工大学化工学院 [2]哈尔滨工程大学化工系

出　　处：《电源技术》1998年第1期21-23,共3页Chinese Journal of Power Sources

摘　　要：报道了一种新的碱性燃料电池氧电极的非贵金属催化剂。这种用化学还原法制备的Ａｇ－Ｎｉ－Ｂｉ－Ｈｇ／Ｃ催化剂对氧的阴极还原具有较高的活性。助催化剂Ｎｉ，Ｂｉ，Ｈｇ可以显著提高Ａｇ／Ｃ催化剂的活性，ＸＲＤ证实，助催化剂的加入使银的结晶趋于非晶态化，减小了银结晶的尺寸。经过５２００ｈ的寿命考察，催化剂活性没有明显的改变。A new kind of non noble metal catalyst for the oxygen electrode of alkaline fuel cells was investigated.The Ag Ni Bi Hg/C catalyst prepared by chemical reduction was active for the cathodic reduction of oxygen.It was found that the catalytic activity was improved by adding Ni,Bi,Hg to Ag/C catalyst.XRD indicated that the crystalline silver turned into amorphous in the presence of doping agents and the grain size of silver was reduced.No dramatic deactivation of the catalyst occured after 5200 hours of service.

关 键 词：碱性 燃料电池 氧电极 催化剂 助催化剂 电极 

分 类 号：TM911.403[电气工程—电力电子与电力传动]