Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport
The performance of membrane electrode assembly (MEA) prepared with PtRu nanoparticles supported on a mesoporous carbon as anode catalyst are presented and compared against PtRu synthesized over Vulcan carbon. Polarization and power curves were obtained using 1 M methanol aqueous solution at the anod...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v38_n10_p4116_Bruno http://hdl.handle.net/20.500.12110/paper_03603199_v38_n10_p4116_Bruno |
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paper:paper_03603199_v38_n10_p4116_Bruno2023-06-08T15:34:40Z Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport Direct methanol fuel cell Electrochemical impedance spectroscopy Mass transport Mesoporous carbon PtRu catalyst Electrochemical impedance analysis High current densities Lower voltage drop Membrane electrode assemblies Mesoporous carbon Polarization measurements Pt-Ru catalysts Pt-Ru nanoparticles Carbon Direct methanol fuel cells (DMFC) Electrochemical impedance spectroscopy Mass transfer Mesoporous materials Methanol Platinum alloys Polarization Spectroscopy Synthesis (chemical) Catalyst supports The performance of membrane electrode assembly (MEA) prepared with PtRu nanoparticles supported on a mesoporous carbon as anode catalyst are presented and compared against PtRu synthesized over Vulcan carbon. Polarization and power curves were obtained using 1 M methanol aqueous solution at the anode and O2 at the cathode. The mesoporous carbon supported catalyst shows peak power of 40 mW cm-2 and 67 mW cm-2 at 30 °C and 60 °C respectively, that is, 15-30% higher than the Vulcan supported catalyst, and exhibits a wider range of operating current. Moreover, an improvement in the mass transport is observed for the catalyst supported on mesoporous carbon, yielding a lower voltage drop at high current density. This behavior was confirmed by electrochemical impedance spectroscopy (EIS), where an increases of the Warburg coefficient value by a factor 3-4 for the catalyst supported on mesoporous carbon as compared with that supported on Vulcan, would indicate a more facile diffusion of methanol through the mesoporous carbon. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v38_n10_p4116_Bruno http://hdl.handle.net/20.500.12110/paper_03603199_v38_n10_p4116_Bruno |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Direct methanol fuel cell Electrochemical impedance spectroscopy Mass transport Mesoporous carbon PtRu catalyst Electrochemical impedance analysis High current densities Lower voltage drop Membrane electrode assemblies Mesoporous carbon Polarization measurements Pt-Ru catalysts Pt-Ru nanoparticles Carbon Direct methanol fuel cells (DMFC) Electrochemical impedance spectroscopy Mass transfer Mesoporous materials Methanol Platinum alloys Polarization Spectroscopy Synthesis (chemical) Catalyst supports |
| spellingShingle |
Direct methanol fuel cell Electrochemical impedance spectroscopy Mass transport Mesoporous carbon PtRu catalyst Electrochemical impedance analysis High current densities Lower voltage drop Membrane electrode assemblies Mesoporous carbon Polarization measurements Pt-Ru catalysts Pt-Ru nanoparticles Carbon Direct methanol fuel cells (DMFC) Electrochemical impedance spectroscopy Mass transfer Mesoporous materials Methanol Platinum alloys Polarization Spectroscopy Synthesis (chemical) Catalyst supports Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| topic_facet |
Direct methanol fuel cell Electrochemical impedance spectroscopy Mass transport Mesoporous carbon PtRu catalyst Electrochemical impedance analysis High current densities Lower voltage drop Membrane electrode assemblies Mesoporous carbon Polarization measurements Pt-Ru catalysts Pt-Ru nanoparticles Carbon Direct methanol fuel cells (DMFC) Electrochemical impedance spectroscopy Mass transfer Mesoporous materials Methanol Platinum alloys Polarization Spectroscopy Synthesis (chemical) Catalyst supports |
| description |
The performance of membrane electrode assembly (MEA) prepared with PtRu nanoparticles supported on a mesoporous carbon as anode catalyst are presented and compared against PtRu synthesized over Vulcan carbon. Polarization and power curves were obtained using 1 M methanol aqueous solution at the anode and O2 at the cathode. The mesoporous carbon supported catalyst shows peak power of 40 mW cm-2 and 67 mW cm-2 at 30 °C and 60 °C respectively, that is, 15-30% higher than the Vulcan supported catalyst, and exhibits a wider range of operating current. Moreover, an improvement in the mass transport is observed for the catalyst supported on mesoporous carbon, yielding a lower voltage drop at high current density. This behavior was confirmed by electrochemical impedance spectroscopy (EIS), where an increases of the Warburg coefficient value by a factor 3-4 for the catalyst supported on mesoporous carbon as compared with that supported on Vulcan, would indicate a more facile diffusion of methanol through the mesoporous carbon. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. |
| title |
Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| title_short |
Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| title_full |
Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| title_fullStr |
Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| title_full_unstemmed |
Mesoporous carbon supported PtRu as anode catalyst for direct methanol fuel cell: Polarization measurements and electrochemical impedance analysis of mass transport |
| title_sort |
mesoporous carbon supported ptru as anode catalyst for direct methanol fuel cell: polarization measurements and electrochemical impedance analysis of mass transport |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03603199_v38_n10_p4116_Bruno http://hdl.handle.net/20.500.12110/paper_03603199_v38_n10_p4116_Bruno |
| _version_ |
1768543136258195456 |