The Comparability of Pt to Pt-Ru in Catalyzing the Hydrogen Oxidation Reaction for Alkaline Polymer Electrolyte Fuel Cells Operated at 80 °C

被引：135
作者：
Li, Qihao [1 ]
Peng, Hanqing [1 ]
Wang, Yingming [1 ]
Xiao, Li [1 ]
Lu, Juntao [1 ]
Zhuang, Lin [1 ,2 ]
机构：
[1] Wuhan Univ, Hubei Key Lab Electrochem Power Sources, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Inst Adv Studies, Wuhan 430072, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 05期
基金：
中国国家自然科学基金;
关键词：
alkaline polymer electrolyte; fuel cells; hydrogen oxidation reaction; platinum; temperature; ANION-EXCHANGE MEMBRANE; ELECTROCATALYTIC ACTIVITY; W CM(-2); PERFORMANCE; WATER; ELECTROCHEMISTRY; POLYELECTROLYTES; POLYETHYLENE; CATALYSTS; KINETICS;
D O I：
10.1002/anie.201812662
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The Pt-catalyzed hydrogen oxidation reaction (HOR) for alkaline polymer electrolyte fuel cells (APEFCs) has been one of the focus subjects in current fuel-cell research. The Pt catalyst is inferior for HOR in alkaline solutions, and alloying with Ru is an effective promotion strategy. APEFCs with Pt-Ru anodes have provided a performance benchmark over 1 W cm(-2) at 60 degrees C. The Pt anode is now found to be in fact as good as the Pt-Ru anode for APEFCs operated at elevated conditions. At 80 degrees C with appropriate gas back-pressure, the cell with a Pt anode exhibits a peak power density of about 1.9 W cm(-2), which is very close to that with a Pt-Ru anode. Even by decreasing the anode Pt loading to 0.1 mg cm(-2), over 1.5 W cm(-2) can still be achieved at 80 degrees C. This finding alters the previous understanding about the Pt catalyzed HOR in alkaline media and casts a new light on the development of practical and high-power APFEC technology.
引用
收藏
页码：1442 / 1446
页数：5
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