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| Home > Publications database > In-Operando Investigation of the humidity condition and the swelling of a Nafion-based membrane in a direct methanol fuel cell with synchrotron X-ray Imaging |
| Home > Publications database > In-Operando Investigation of the humidity condition and the swelling of a Nafion-based membrane in a direct methanol fuel cell with synchrotron X-ray Imaging |
| Journal Article | FZJ-2015-05679 |
; ; ; ; ; ;
2015
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.jpowsour.2015.07.064
Abstract: The water distribution of a Nafion-based membrane in a direct methanol fuel cell was analyzed in-operando using high resolved synchrotron X-ray radiography. A specially developed fuel cell design that meets the requirements for radiography as well as for stable cell operation was used. Different electric loads were applied during cell operation. A correlation between the electric load of the cell and the thickness of the membrane was found: the membrane thickness increased with increasing current density. The impact of local water drop dynamics on the water distribution in the membrane and the electrodes have been analyzed. We found a strong influence of water drops in the cathode channel on the water distribution in the adjacent area of the Nafion membrane.
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