Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC

Prabhuram Joghee; Svitlana Pylypenko; Tim Olson; Arrelaine Dameron; April Corpuz; Huyen N. Dinh; Kevin Wood; O'Neill Kevin O'Neill; Katherine Hurst; Guido Bender; Thomas Gennett; Bryan Pivovar; Ryan O'Hayre

doi:10.1149/2.063211jes

Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC

Prabhuram Joghee, Svitlana Pylypenko, Tim Olson, Arrelaine Dameron, April Corpuz, Huyen N. Dinh, Kevin Wood, O'Neill Kevin O'Neill, Katherine Hurst, Guido Bender, Thomas Gennett, Bryan Pivovar, Ryan O'Hayre

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Abstract

The performance and long-term stability of a direct-methanol fuel cell (DMFC) employing PtRu supported on nitrogen-modified carbon is compared with that of PtRu/C (Hi-spec 5000). The long-term stability test is carried by means of accelerated degradation testing (ADT) at an anodic potential of 0.8 V vs. DHE for 640h. The initial DMFC performance of the MEA containing PtRu/C (N-doped) is slightly lower than that of the PtRu/C (Hi-SPEC) because of the lower ECSA of the former. After 640h ADT, the anode ECSA loss is found to be ~21% and ~26% for the PtRu/C (N-doped) and PtRu/C (Hi-SPEC), respectively. Electrochemical analyzes reveal that cathode of the MEA with PtRu/C (N-doped) is less contaminated with Ru. It is further corroborated by post-mortem analysis done by scanning electron microscopy (SEM) associated with EDS, which indicates 4.8 and 8.2 at.% Ru accumulation, respectively, in the cathodes of the PtRu/C (N-doped) and PtRu/C (Hi-SPEC) MEAs after 640h ADT. Although both MEAs sustain anode and cathode ECSA losses, the performance for the PtRu/C (N-doped) MEA is improved by ~28% and ~8% after initial and long-term ADT, while the performance for the PtRu/C (Hi-SPEC) MEA is improved by ~20% after initial and decreased by ~3% after long-term ADT.

Original language	American English
Pages (from-to)	F768-F778
Journal	Journal of the Electrochemical Society
Volume	159
Issue number	11
DOIs	https://doi.org/10.1149/2.063211jes https://doi.org/10.1149/2.063211jes
State	Published - 2012

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NREL/JA-5600-57005

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Joghee, P., Pylypenko, S., Olson, T., Dameron, A., Corpuz, A., Dinh, H. N., Wood, K., Kevin O'Neill, ON., Hurst, K., Bender, G., Gennett, T., Pivovar, B., & O'Hayre, R. (2012). Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC. Journal of the Electrochemical Society, 159(11), F768-F778. https://doi.org/10.1149/2.063211jes, https://doi.org/10.1149/2.063211jes

@article{2af3b33c3b874cbb9d7bea43b859960b,

title = "Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC",

abstract = "The performance and long-term stability of a direct-methanol fuel cell (DMFC) employing PtRu supported on nitrogen-modified carbon is compared with that of PtRu/C (Hi-spec 5000). The long-term stability test is carried by means of accelerated degradation testing (ADT) at an anodic potential of 0.8 V vs. DHE for 640h. The initial DMFC performance of the MEA containing PtRu/C (N-doped) is slightly lower than that of the PtRu/C (Hi-SPEC) because of the lower ECSA of the former. After 640h ADT, the anode ECSA loss is found to be ~21% and ~26% for the PtRu/C (N-doped) and PtRu/C (Hi-SPEC), respectively. Electrochemical analyzes reveal that cathode of the MEA with PtRu/C (N-doped) is less contaminated with Ru. It is further corroborated by post-mortem analysis done by scanning electron microscopy (SEM) associated with EDS, which indicates 4.8 and 8.2 at.% Ru accumulation, respectively, in the cathodes of the PtRu/C (N-doped) and PtRu/C (Hi-SPEC) MEAs after 640h ADT. Although both MEAs sustain anode and cathode ECSA losses, the performance for the PtRu/C (N-doped) MEA is improved by ~28% and ~8% after initial and long-term ADT, while the performance for the PtRu/C (Hi-SPEC) MEA is improved by ~20% after initial and decreased by ~3% after long-term ADT.",

author = "Prabhuram Joghee and Svitlana Pylypenko and Tim Olson and Arrelaine Dameron and April Corpuz and Dinh, {Huyen N.} and Kevin Wood and {Kevin O'Neill}, O'Neill and Katherine Hurst and Guido Bender and Thomas Gennett and Bryan Pivovar and Ryan O'Hayre",

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doi = "10.1149/2.063211jes",

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Joghee, P, Pylypenko, S, Olson, T, Dameron, A, Corpuz, A, Dinh, HN, Wood, K, Kevin O'Neill, ON , Hurst, K , Bender, G , Gennett, T , Pivovar, B & O'Hayre, R 2012, 'Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC', Journal of the Electrochemical Society, vol. 159, no. 11, pp. F768-F778. https://doi.org/10.1149/2.063211jes, https://doi.org/10.1149/2.063211jes

TY - JOUR

T1 - Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC

AU - Joghee, Prabhuram

AU - Pylypenko, Svitlana

AU - Olson, Tim

AU - Dameron, Arrelaine

AU - Corpuz, April

AU - Dinh, Huyen N.

AU - Wood, Kevin

AU - Kevin O'Neill, O'Neill

AU - Hurst, Katherine

AU - Bender, Guido

AU - Gennett, Thomas

AU - Pivovar, Bryan

AU - O'Hayre, Ryan

PY - 2012

Y1 - 2012

N2 - The performance and long-term stability of a direct-methanol fuel cell (DMFC) employing PtRu supported on nitrogen-modified carbon is compared with that of PtRu/C (Hi-spec 5000). The long-term stability test is carried by means of accelerated degradation testing (ADT) at an anodic potential of 0.8 V vs. DHE for 640h. The initial DMFC performance of the MEA containing PtRu/C (N-doped) is slightly lower than that of the PtRu/C (Hi-SPEC) because of the lower ECSA of the former. After 640h ADT, the anode ECSA loss is found to be ~21% and ~26% for the PtRu/C (N-doped) and PtRu/C (Hi-SPEC), respectively. Electrochemical analyzes reveal that cathode of the MEA with PtRu/C (N-doped) is less contaminated with Ru. It is further corroborated by post-mortem analysis done by scanning electron microscopy (SEM) associated with EDS, which indicates 4.8 and 8.2 at.% Ru accumulation, respectively, in the cathodes of the PtRu/C (N-doped) and PtRu/C (Hi-SPEC) MEAs after 640h ADT. Although both MEAs sustain anode and cathode ECSA losses, the performance for the PtRu/C (N-doped) MEA is improved by ~28% and ~8% after initial and long-term ADT, while the performance for the PtRu/C (Hi-SPEC) MEA is improved by ~20% after initial and decreased by ~3% after long-term ADT.

AB - The performance and long-term stability of a direct-methanol fuel cell (DMFC) employing PtRu supported on nitrogen-modified carbon is compared with that of PtRu/C (Hi-spec 5000). The long-term stability test is carried by means of accelerated degradation testing (ADT) at an anodic potential of 0.8 V vs. DHE for 640h. The initial DMFC performance of the MEA containing PtRu/C (N-doped) is slightly lower than that of the PtRu/C (Hi-SPEC) because of the lower ECSA of the former. After 640h ADT, the anode ECSA loss is found to be ~21% and ~26% for the PtRu/C (N-doped) and PtRu/C (Hi-SPEC), respectively. Electrochemical analyzes reveal that cathode of the MEA with PtRu/C (N-doped) is less contaminated with Ru. It is further corroborated by post-mortem analysis done by scanning electron microscopy (SEM) associated with EDS, which indicates 4.8 and 8.2 at.% Ru accumulation, respectively, in the cathodes of the PtRu/C (N-doped) and PtRu/C (Hi-SPEC) MEAs after 640h ADT. Although both MEAs sustain anode and cathode ECSA losses, the performance for the PtRu/C (N-doped) MEA is improved by ~28% and ~8% after initial and long-term ADT, while the performance for the PtRu/C (Hi-SPEC) MEA is improved by ~20% after initial and decreased by ~3% after long-term ADT.

UR - http://www.scopus.com/inward/record.url?scp=84871659318&partnerID=8YFLogxK

U2 - 10.1149/2.063211jes

DO - 10.1149/2.063211jes

M3 - Article

AN - SCOPUS:84871659318

SN - 0013-4651

VL - 159

SP - F768-F778

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 11

ER -

Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC

Abstract

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