We report a two- to threefold enhancement of CO tolerance in a proton exchange membrane (PEM) fuel cell, exhibited by carbon supported nanocrystalline PtMo/C as compared to the current state of the art PtRu/C electrocatalysts. The bulk of these nanocrystals were comprised of Pt alloyed with Mo in the ratio 8.7: 1.3 as shown by both X-ray diffraction and in situ extended X-ray absorption fine structure measurements. Rotating disk electrode measurements and cyclic voltammetry in a PEM fuel cell indicate the onset of CO oxidation at potentials as low as 0.1 V. Further, the oxidation of CO exhibits two distinct peaks, indicating redox behavior involving oxyhydroxides of Mo. This is supported by in situ X-ray absorption near edge structure measurements at the Mo K edge.
Source:
Electrochemical and Solid State Letters, 1999, 2, 1, 12-15
TY - JOUR
AU - Mukerjee, S
AU - Lee, SJ
AU - Ticianelli, EA
AU - McBreen, J
AU - Grgur, Branimir
AU - Marković, NM
AU - Ross, PN
AU - Giallombardo, JR
AU - De Castro, ES
PY - 1999
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/250
AB - We report a two- to threefold enhancement of CO tolerance in a proton exchange membrane (PEM) fuel cell, exhibited by carbon supported nanocrystalline PtMo/C as compared to the current state of the art PtRu/C electrocatalysts. The bulk of these nanocrystals were comprised of Pt alloyed with Mo in the ratio 8.7: 1.3 as shown by both X-ray diffraction and in situ extended X-ray absorption fine structure measurements. Rotating disk electrode measurements and cyclic voltammetry in a PEM fuel cell indicate the onset of CO oxidation at potentials as low as 0.1 V. Further, the oxidation of CO exhibits two distinct peaks, indicating redox behavior involving oxyhydroxides of Mo. This is supported by in situ X-ray absorption near edge structure measurements at the Mo K edge.
PB - Electrochemical Soc Inc, Pennington
T2 - Electrochemical and Solid State Letters
T1 - Investigation of enhanced CO tolerance in proton exchange membrane fuel cells by carbon supported PtMo alloy catalyst
EP - 15
IS - 1
SP - 12
VL - 2
DO - 10.1149/1.1390718
ER -
@article{
author = "Mukerjee, S and Lee, SJ and Ticianelli, EA and McBreen, J and Grgur, Branimir and Marković, NM and Ross, PN and Giallombardo, JR and De Castro, ES",
year = "1999",
abstract = "We report a two- to threefold enhancement of CO tolerance in a proton exchange membrane (PEM) fuel cell, exhibited by carbon supported nanocrystalline PtMo/C as compared to the current state of the art PtRu/C electrocatalysts. The bulk of these nanocrystals were comprised of Pt alloyed with Mo in the ratio 8.7: 1.3 as shown by both X-ray diffraction and in situ extended X-ray absorption fine structure measurements. Rotating disk electrode measurements and cyclic voltammetry in a PEM fuel cell indicate the onset of CO oxidation at potentials as low as 0.1 V. Further, the oxidation of CO exhibits two distinct peaks, indicating redox behavior involving oxyhydroxides of Mo. This is supported by in situ X-ray absorption near edge structure measurements at the Mo K edge.",
publisher = "Electrochemical Soc Inc, Pennington",
journal = "Electrochemical and Solid State Letters",
title = "Investigation of enhanced CO tolerance in proton exchange membrane fuel cells by carbon supported PtMo alloy catalyst",
pages = "15-12",
number = "1",
volume = "2",
doi = "10.1149/1.1390718"
}
Mukerjee, S., Lee, S., Ticianelli, E., McBreen, J., Grgur, B., Marković, N., Ross, P., Giallombardo, J.,& De Castro, E.. (1999). Investigation of enhanced CO tolerance in proton exchange membrane fuel cells by carbon supported PtMo alloy catalyst. in Electrochemical and Solid State Letters
Electrochemical Soc Inc, Pennington., 2(1), 12-15.
https://doi.org/10.1149/1.1390718
Mukerjee S, Lee S, Ticianelli E, McBreen J, Grgur B, Marković N, Ross P, Giallombardo J, De Castro E. Investigation of enhanced CO tolerance in proton exchange membrane fuel cells by carbon supported PtMo alloy catalyst. in Electrochemical and Solid State Letters. 1999;2(1):12-15.
doi:10.1149/1.1390718 .
Mukerjee, S, Lee, SJ, Ticianelli, EA, McBreen, J, Grgur, Branimir, Marković, NM, Ross, PN, Giallombardo, JR, De Castro, ES, "Investigation of enhanced CO tolerance in proton exchange membrane fuel cells by carbon supported PtMo alloy catalyst" in Electrochemical and Solid State Letters, 2, no. 1 (1999):12-15,
https://doi.org/10.1149/1.1390718 . .
