Suppression of CO Adsorption on PtRu/C Catalysts Modified with Metallic Ruthenium Nanosheets

被引：11
作者：
Takimoto, Daisuke [1 ]
Ohnishi, Tomohiro [2 ]
Ayato, Yusuke [3 ]
Mochizuki, Dai [3 ]
Sugimoto, Wataru [1 ,2 ,3 ]
机构：
[1] Shinshu Univ, Interdisciplinary Grad Sch Sci & Technol, Ueda, Nagano 3868567, Japan
[2] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan
[3] Shinshu Univ, Ctr Energy & Environm Sci, Ueda, Nagano 3868567, Japan
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 05期
关键词：
ROTATING-DISK ELECTRODE; MEMBRANE FUEL-CELLS; PT-RU; CARBON-MONOXIDE; METHANOL ELECTROOXIDATION; UNDERPOTENTIAL DEPOSITION; TEMPERATURE-DEPENDENCE; ALLOY ELECTROCATALYSTS; SURFACE-COMPOSITION; TERNARY CATALYSTS;
D O I：
10.1149/2.0591605jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
PtRu/C catalyst were modified with one-atom-thick metallic Ru nanosheets, and the electrocatalytic activity as well as long term durability were studied for use as an anode catalyst in polymer electrolyte fuel cells. Metallic Ru nanosheet-PtRu/C composite catalysts were obtained by hydrogen reduction of RuO2.1 nanosheet-modified PtRu/C. The hydrogen oxidation reaction activity in 300 ppm CO/H-2 saturated 0.1 M HClO4 at 20 mV vs. RHE increased from 89 A (g-PtRu)(-1) for PtRu/C to 124 A (g-PtRu)(-1) for metallic Ru nanosheet modified PtRu/C catalyst. After the accelerated durability test, the hydrogen oxidation reaction activity for the modified catalyst was 1.8 times higher than that of PtRu/C. The results suggest that the CO tolerance and durability of PtRu/C can be easily improved by adding metallic Ru nanosheets. (C) The Author(s) 2016. Published by ECS. All rights reserved.
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收藏
页码：F367 / F371
页数：5
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