Development of a novel CO tolerant proton exchange membrane fuel cell anode

被引:48
作者
Haug, AT [1 ]
White, RE
Weidner, JW
Huang, W
机构
[1] Univ S Carolina, Dept Chem Engn, Ctr Electrochem Engn, Columbia, SC 29208 USA
[2] Plug Power Inc, Latham, NY 12110 USA
[3] SUNY Albany, Sch Nanosci & Engn, Energy & Environm Applicatat Ctr, Albany, NY 12203 USA
关键词
D O I
10.1149/1.1479726
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Typically Pt is alloyed with metals such as Ru, Sn, or Mo to provide a more CO-tolerant, high-performance proton exchange membrane fuel cell (PEMFC) anode. In this work, a layer of carbon-supported Ru is placed between the Pt catalyst and the anode flow field to form a filter. When oxygen is added to the fuel stream, it was predicted that the slow H-2 kinetics of Ru in this filter would become an advantage compared to Pt and Pt: Ru alloy anodes, allowing a greater percentage of O-2 to oxidize adsorbed CO to CO2. With an anode feed of H-2,2% O-2, and up to 100 ppm CO, the Pt 1 Ru filter anode performed better at 70degrees C than the Pt: Ru alloy. The oxygen in the anode feed stream was found to form a hydroxyl species within the filter. The reaction of these hydroxyl groups with adsorbed CO was the primary means of CO oxidation within the filter. Because of the resulting proton formation, the Ru filter must be placed in front of and adjacent to the Pt anode and must contain Nafion in order to provide the ionic pathways for proton conduction, and hence achieve the maximum benefit of the filter. (C) 2002 The Electrochemical Society.
引用
收藏
页码:A862 / A867
页数:6
相关论文
共 37 条
[21]   Lattice gas model for CO electrooxidation on Pt-Ru bimetallic surfaces [J].
Koper, MTM ;
Lukkien, JJ ;
Jansen, APJ ;
van Santen, RA .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (26) :5522-5529
[22]   COADSORPTION OF OXYGEN AND CARBON-MONOXIDE ON RU(001) [J].
LEE, HI ;
PRALINE, G ;
WHITE, JM .
SURFACE SCIENCE, 1980, 91 (2-3) :581-600
[23]   Electrocatalysis of CO tolerance in hydrogen oxidation reaction in PEM fuel cells [J].
Lee, SJ ;
Mukerjee, S ;
Ticianelli, EA ;
McBreen, J .
ELECTROCHIMICA ACTA, 1999, 44 (19) :3283-3293
[24]   ADSORPTION OF OXYGEN AND OXIDATION OF CO ON RUTHENIUM (001) SURFACE [J].
MADEY, TE ;
ENGELHARDT, HA ;
MENZEL, D .
SURFACE SCIENCE, 1975, 48 (02) :304-328
[25]  
Markovic NM, 2001, FUEL CELLS, V1, P105, DOI 10.1002/1615-6854(200107)1:2<105::AID-FUCE105>3.0.CO
[26]  
2-9
[27]   Effect of temperature on surface processes at the Pt(111)-liquid interface: Hydrogen adsorption, oxide formation, and CO oxidation [J].
Markovic, NM ;
Schmidt, TJ ;
Grgur, BN ;
Gasteiger, HA ;
Behm, RJ ;
Ross, PN .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (40) :8568-8577
[28]   Electrooxidation of CO and H2/CO mixtures on Pt(111) in acid solutions [J].
Markovic, NM ;
Grgur, BN ;
Lucas, CA ;
Ross, PN .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (03) :487-495
[29]   Performance data of a proton exchange membrane fuel cell using H-2/CO as fuel gas [J].
Oetjen, HF ;
Schmidt, VM ;
Stimming, U ;
Trila, F .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (12) :3838-3842
[30]   CARBON-MONOXIDE REMOVAL FROM HYDROGEN-RICH FUEL-CELL FEEDSTREAMS BY SELECTIVE CATALYTIC-OXIDATION [J].
OH, SH ;
SINKEVITCH, RM .
JOURNAL OF CATALYSIS, 1993, 142 (01) :254-262