Fabrication of catalyst layer with ionomer nanofiber scaffolding for polymer electrolyte fuel cells
| Autor: | Akihiro Shinohara, Shuhei Yoshino, Yu Morimoto, Kensaku Kodama |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Water transport
Materials science Fabrication Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Nanofiber Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Ionomer Layer (electronics) Power density |
| Zdroj: | Journal of Power Sources. 476:228584 |
| ISSN: | 0378-7753 |
| Popis: | Cathode catalyst layers for polymer electrolyte fuel cells (PEFC) with ionomer nanofiber scaffoldings (iNFS-CL) are fabricated by the electrospinning method, and their performances and elemental properties are comprehensively investigated. The cells with the iNFS-CLs exhibit higher performances than those with conventional cathode catalyst layers over the humidity range of 30%–165%RH. The higher robustness against the change in humidity is ascribed to improved oxygen and water transport properties by continuous pores in the catalyst layer. In addition, the fabrication method could reduce the ionomer densities near the catalyst surfaces, and as a result, catalyst poisonings by anionic groups from the ionomer are suppressed. Thus, the iNFS-CL structure is promising for improving the efficiency and power density of the PEFCs. |
| Databáze: | OpenAIRE |
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