Carbon xerogel as gas diffusion layer in PEM fuel cells
| Autor: | Adriana Balan, Alexandra Maria Isabel Trefilov, Catalin Ceaus, Sanda Voinea, E. C. Serban, Stefan Marian Iordache, Athanasios Tiliakos |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Graphene Oxide Energy Engineering and Power Technology Proton exchange membrane fuel cell chemistry.chemical_element 02 engineering and technology Microporous material Carbon black Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Fuel Technology chemistry Chemical engineering law 0210 nano-technology Carbon Layer (electronics) |
| Zdroj: | International Journal of Hydrogen Energy. 42:10448-10454 |
| ISSN: | 0360-3199 |
| Popis: | We investigate a novel gas diffusion layer/catalyst/membrane assembly based on low-cost carbon xerogels replacing the expensive plasma-pyrolyzed carbon black microporous layer (MPL). The tri-layer structure (carbon paper/carbon xerogel/carbon black) of the gas diffusion layer (GDL) was tailored to enhance the bi-phase (gas–liquid) flow dynamics. GDL synthesis was performed by immersing carbon paper in a resorcinol-formaldehyde-graphene oxide precursor solution, followed by thermal treatment. The end product is a carbon xerogel structure with incorporated graphene layers that counter the additional overpotential losses due to conductivity and mass-transfer limitations. MPL structure and porosity were controlled by performing xerogel crosslinking in a centrifugal field at different G-Forces, resulting in a highly conductive material with structural properties tailored to the application of interest. |
| Databáze: | OpenAIRE |
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