The effect of M/C (M = Mo, Cu, Fe and W) in the diffusion layer of gas diffusion electrodes on the hydrogen oxidation reaction in the presence of carbon monoxide

被引：4

作者：

da Silva Pereira, Luis Gustavo ^{[1
]}

Pereira, Maristela Elisabete ^{[1
]}

Ticianelli, Edson Antonio ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, Dept Quim Fis, BR-13560 Sao Carlos, SP, Brazil

来源：

QUIMICA NOVA | 2007年 / 30卷 / 07期

关键词：

PEMFC; carbon monoxide; water-gas shift;

D O I：

10.1590/S0100-40422007000700027

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The performance of proton exchange membrane fuel cells (PEMFC) with Pt-based anodes is drastically lowered when CO-containing hydrogen is used to feed the system, because of the strong adsorption of CO on platinum. In the present work the effects of the presence of a conversion layer of CO to CO2 composed by several M/C materials (where M = Mo, Cu, Fe and W) in gas diffusion anodes formed by Pt catalysts were investigated. The diffusion layers formed by Mo/C e W/C show good CO-tolerance, and this was attributed to the CO removal by parallel occurrence of the water-gas shift reaction and the so-called bifunctional mechanism.

引用

页码：1644 / 1648

页数：5

共 25 条

[1] Transition metal oxides as reconfigured fuel cell anode catalysts for improved CO tolerance: Polarization data [J].

Adcock, PA ;

Pacheco, SV ;

Norman, KM ;

Uribe, FA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (02) :A459-A466

[2] The CO poisoning mechanism of the hydrogen oxidation reaction in proton exchange membrane fuel cells [J].

Camara, GA ;

Ticianelli, EA ;

Mukerjee, S ;

Lee, SJ ;

McBreen, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) :A748-A753

[3] Improvement of CO tolerance of proton exchange membrane (PEM) fuel cells by a pulsing technique [J].

Carrette, LPL ;

Friedrich, KA ;

Huber, M ;

Stimming, U .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (03) :320-324

[4] Challenges for fuel cells in transport applications [J].

Chalk, SG ;

Miller, JF ;

Wagner, FW .

JOURNAL OF POWER SOURCES, 2000, 86 (1-2) :40-51

[5] Anode materials for low-temperature fuel cells: A density functional theory study [J].

Christoffersen, E ;

Liu, P ;

Ruban, A ;

Skriver, HL ;

Norskov, JK .

JOURNAL OF CATALYSIS, 2001, 199 (01) :123-131

[6] A NEW APPROACH TO THE PROBLEM OF CARBON-MONOXIDE POISONING IN FUEL-CELLS OPERATING AT LOW-TEMPERATURES [J].

GOTTESFELD, S ;

PAFFORD, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1988, 135 (10) :2651-2652

[7] Binary and ternary anode catalyst formulations including the elements W, Sn and Mo for PEMFCs operated on methanol or reformate gas [J].

Gotz, M ;

Wendt, H .

ELECTROCHIMICA ACTA, 1998, 43 (24) :3637-3644

[8] Effect of reformate components on PEMFC performance - Dilution and reverse water gas shift reaction [J].

Gu, T ;

Lee, WK ;

Van Zee, JW ;

Murthy, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (12) :A2100-A2105

[9] Catalytic oxidation of methanol on molybdate-modified platinum electrode in sulfuric acid solution [J].

Li, WS ;

Tian, LP ;

Huang, QM ;

Li, H ;

Chen, HY ;

Lian, XP .

JOURNAL OF POWER SOURCES, 2002, 104 (02) :281-288

[10] METHANOL OXIDATION CHARACTERISTICS OF RARE-EARTH TUNGSTEN BRONZE ELECTRODES DOPED WITH PLATINUM [J].

MACHIDA, K ;

ENYO, M ;

ADACHI, G ;

SHIOKAWA, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1988, 135 (08) :1955-1961

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