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    Probing water distribution in compressed fuel-cell gas-diffusion layers using X-ray computed tomography

    Date
    2015-04
    Author
    Zenyuk, Iryna V.
    Parkinson, Dilworth Y.
    Hwang, Gisuk
    Weber, Adam Z.
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    Citation
    Zenyuk, Iryna V.; Parkinson, Dilworth Y.; Hwang, Gisuk; Weber, Adam Z.. 2015. Probing water distribution in compressed fuel-cell gas-diffusion layers using X-ray computed tomography. Electrochemistry Communications, vol. 53, April 2015,:pp 24–28
    Abstract
    X-ray computed tomography was used to investigate geometrical land and channel effects on spatial liquid-water distribution in gas-diffusion layers (GDLs) of polymer-electrolyte fuel cells under different levels of compression. At low compression, a uniform liquid-water front was observed due to water redistribution and uniform porosity; however, at high compression, the water predominantly advanced at locations under the channel for higher liquid pressures. At low compression, no apparent correlation between the spatial liquid water and porosity distributions was observed, whereas at high compression, a strong correlation was shown, indicating a potential for smart GDL architecture design with modulated porosity
    Description
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    URI
    http://dx.doi.org/10.1016/j.elecom.2015.02.005
    http://hdl.handle.net/10057/11278
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