Durability test with fuel starvation using a Pt/CNF catalyst in PEMFC
| Autor: | Junbom Kim, Byungil Park, Ju-Hae Jung |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Materials science
Nano Express Carbon nanofiber Membrane electrode assembly Proton exchange membrane fuel cell Nanotechnology carbon nanofiber Electrolyte Electrochemistry Condensed Matter Physics Catalysis polymer electrolyte membrane fuel cell Chemical engineering Materials Science(all) catalyst durability General Materials Science Cyclic voltammetry Polarization (electrochemistry) |
| Zdroj: | Nanoscale Research Letters NANOSCALE RESEARCH LETTERS(7) |
| ISSN: | 1556-276X |
| DOI: | 10.1186/1556-276x-7-34 |
| Popis: | In this study, a catalyst was synthesized on carbon nanofibers [CNFs] with a herringbone-type morphology. The Pt/CNF catalyst exhibited low hydrophilicity, low surface area, high dispersion, and high graphitic behavior on physical analysis. Electrodes (5 cm2) were prepared by a spray method, and the durability of the Pt/CNF was evaluated by fuel starvation. The performance was compared with a commercial catalyst before and after accelerated tests. The fuel starvation caused carbon corrosion with a reverse voltage drop. The polarization curve, EIS, and cyclic voltammetry were analyzed in order to characterize the electrochemical properties of the Pt/CNF. The performance of a membrane electrode assembly fabricated from the Pt/CNF was maintained, and the electrochemical surface area and cell resistance showed the same trend. Therefore, CNFs are expected to be a good support in polymer electrolyte membrane fuel cells. |
| Databáze: | OpenAIRE |
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