Performance of membrane electrode assemblies using PdPt alloy as anode catalysts in polymer electrolyte membrane fuel cell
| Autor: | Ju Wan Lim, Minjeh Ahn, Yoon-Hwan Cho, Yong-Hun Cho, Heeman Choe, Hee-Young Park, Namgee Jung, Yung-Eun Sung |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Membrane electrode assembly Inorganic chemistry Energy Engineering and Power Technology Proton exchange membrane fuel cell Electrolyte Condensed Matter Physics Borohydride Electrocatalyst Anode Catalysis chemistry.chemical_compound Fuel Technology Membrane chemistry |
| Zdroj: | International Journal of Hydrogen Energy. 37:5884-5890 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2011.12.149 |
| Popis: | Pd-based nanoparticles, such as 40 wt.% carbon-supported Pd50Pt50, Pd75Pt25, Pd90Pt10 and Pd95Pt5, for anode electrocatalyst on polymer electrolyte membrane fuel cells (PEMFCs) were synthesized by the borohydride reduction method. PdPt metal particles with a narrow size distribution were dispersed uniformly on a carbon support. The membrane electrode assembly (MEA) with Pd95Pt5/C as the anode catalyst exhibited comparable single-cell performance to that of commercial Pt/C at 0.7 V. Although the Pt loading of the anode with Pd95Pt5/C was as low as 0.02 mg cm−2, the specific power (power to mass of Pt in the MEA) of Pd95Pt5/C was higher than that of Pt/C at 0.7 V. Furthermore, the single-cell performance with Pd50Pt50/C and Pd75Pt25/C as the anode catalyst at 0.4 V was approximately 95% that of the MEA with the Pt/C catalyst. This indicated that a Pd-based catalyst that has an extremely small amount of Pt (only 5 or 50 at.%) can be replaced as an anode electrocatalyst in PEMFC. |
| Databáze: | OpenAIRE |
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