电化学2017，Vol.23Issue(2)：199-206,8.DOI:10.13208/j.electrochem.161249
铂合金纳米立方块催化剂的氧还原反应活性比较
Comparison of Oxygen Reduction Reaction Activity of Pt-Alloy Nanocubes
摘要
Abstract
Alloying Pt with the first row non-noble transition metals has been demonstrated to increase the catalytic activity toward oxygen reduction reaction (ORR),which is the cathode reaction of the proton exchange membrane fuel cells (PEMFCs) and metal-air batteries.However,how much the ORR activity improvement comes from the alloying elements remains controversial.In this paper,the nanocubes of PtMn,PtFe,PtCo,and PtNi with the similar size and composition were prepared and their ORR activities were explored,in order to investigate the effects of alloying elements on the catalytic activity.The use of cubic shape particles minimizes the contribution to the activity from particle surface structural difference.The results showed that the ORR activity vs.Pt d-band center plot had a volcano shape and PtCo nanocube is the most active.These observations are in harmony with density functional theory calculations on well-defined surfaces in the framework of the d-band theory.关键词
铂合金纳米立方块/氧还原反应/质子交换膜燃料电池/d-能带理论Key words
Pt-alloy nanocubes/oxygen reduction reaction/proton exchange membrane fuel cells/d-band theory分类
化学化工引用本文复制引用
汤永安,代琳,邹受忠..铂合金纳米立方块催化剂的氧还原反应活性比较[J].电化学,2017,23(2):199-206,8.基金项目
This work was supported by the US National Science Foundation (CHE 1156425,CHE 1559670). （CHE 1156425,CHE 1559670）
