Unique CO-tolerance of Pt-WOx materials

被引：65

作者：

Micoud, F. ^{[1
]}

Maillard, F. ^{[1
]}

Gourgaud, A. ^{[1
]}

Chatenet, M. ^{[1
]}

机构：

[1] UJF, Grenoble INP, Lab Electrochim & Phys Chem Mat & Interfaces, CNRS,UMR 5631, F-38402 St Martin Dheres, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 03期

关键词：

CO-tolerance; Nanoparticle; Platinum; Tungsten oxide; PEMFC; MONOLAYER OXIDATION; PARTICLE-SIZE; FUEL-CELLS; ELECTROOXIDATION; ELECTROCATALYSTS; CATALYSTS; TUNGSTEN; NANOPARTICLES; PERFORMANCE; ELECTRODE;

D O I：

10.1016/j.elecom.2009.01.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Well-defined tungsten-oxide-supported platinum nanoparticles (Pt/WOx) were elaborated by impregnation-reduction of a platinum salt onto commercial monoclinic WO3. Field-emission gun scanning electron microscopy (FEG-SEM) and transmission electron microscopy (TEM) revealed that the Pt particles are well-distributed on the oxide support, present a narrow particle size distribution centered on ca. 2-3 nm and a low degree of agglomeration. Carbon black was added to ensure electronic percolation in the electrodes during the electrochemical measurements. COads electrooxidation currents were monitored at potentials as low as 0.1 V vs. RHE on Pt/WOx, demonstrating high CO-tolerance compared to carbon-supported Pt or PtRu catalysts. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：651 / 654

页数：4

共 19 条

[1] The effect of the particle size on the kinetics of CO electrooxidation on high surface area Pt catalysts
Arenz, M
Mayrhofer, KJJ
Stamenkovic, V
Blizanac, BB
Tomoyuki, T
Ross, PN
Markovic, NM
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (18) : 6819 - 6829
[2] Colmenares L, 2006, J NEW MAT ELECTR SYS, V9, P107
[3] Interaction of nanostructured metal overlayers with oxide surfaces
Fu, Qiang
Wagner, Thomm
[J]. SURFACE SCIENCE REPORTS, 2007, 62 (11) : 431 - 498
[4] An electrocatalyst for methanol oxidation based on tungsten trioxide microspheres and platinum
Ganesan, Raman
Lee, Jae Sung
[J]. JOURNAL OF POWER SOURCES, 2006, 157 (01) : 217 - 221
[5] CO ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RU ALLOYS
GASTEIGER, HA
MARKOVIC, N
ROSS, PN
CAIRNS, EJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (02) : 617 - 625
[6] Electrooxidation of H2, CO, and H2/CO mixtures on a well-characterized Pt70Mo30 bulk alloy electrode
Grgur, BN
Markovic, NM
Ross, PN
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (14): : 2494 - 2501
[7] CO Tolerance of Pt alloy electrocatalysts for polymer electrolyte fuel cells and the detoxification mechanism
Igarashi, H
Fujino, T
Zhu, YM
Uchida, H
Watanabe, M
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (03) : 306 - 314
[8] Electrooxidation of COH2/CO and mixtures on a carbon-supported Pt catalyst -: a kinetic and mechanistic study by differential electrochemical mass spectrometry
Jusys, Z
Kaiser, J
Behm, RJ
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (21) : 4650 - 4660
[9] Advances in interactive supported electrocatalysts for hydrogen and oxygen electrode reactions
Krstajic, Nedeljko V.
Vracar, Ljijana M.
Radmilovic, Velimir R.
Neophytides, Stelios G.
Labou, Miranda
Jaksic, Jelena M.
Tunold, Reidar
Falaras, Polycarpos
Jaksic, Milan M.
[J]. SURFACE SCIENCE, 2007, 601 (09) : 1949 - 1966
[10] ELECTROCATALYTIC PROPERTIES OF BIFUNCTIONAL PT/W(VI,V) OXIDE MICROSTRUCTURES ELECTRODEPOSITED ON CARBON SUBSTRATES
KULESZA, PJ
FAULKNER, LR
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 259 (1-2): : 81 - 98

← 1 2 →