Transactions of the Visualization Society of Japan
Online ISSN : 1346-5260
ISSN-L : 1346-5252
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Volume 32, Issue 9
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  • Visualization of Two-Phase Flow in Anode Channel of Direct Methanol Fuel Cell
    Eiji EJIRI, Tomoshige NUMAGUCHI, Shinsuke HIRANO
    2012 Volume 32 Issue 9 Pages 21-27
    Published: 2012
    Released on J-STAGE: December 27, 2012
    DOIhttps://doi.org/10.3154/tvsj.32.21
    JOURNAL FREE ACCESS
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      The direct methanol fuel cell is one of the most promising candidates for the next generation power source of small electric appliances. One of the issues, however, is that carbon dioxide bubbles in the anode channel tend to obstruct the reaction and deteriorate the overall fuel cell performance. In this paper, intensive studies were carried out regarding the influence of thickness and wettability of the gas diffusion layer (GDL) on the output voltage and the bubble behavior. The two-phase flow was visualized using a single cell visualization setup with pressure sensors. The results showed that the GDL thickness did not have a strong influence on the fuel cell performance, but the difference in wettability of GDL surface had a distinguished impact on the output voltage and the channel pressure fluctuation.
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