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    Dynamic water management of polymer electrolyte membrane fuel cells using intermittent RH control

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    Type
    Article
    Authors
    Hussaini, I.S.
    Wang, C.Y.
    Date
    2010-06
    Permanent link to this record
    http://hdl.handle.net/10754/598030
    
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    Abstract
    A novel method of water management of polymer electrolyte membrane (PEM) fuel cells using intermittent humidification is presented in this study. The goal is to maintain the membrane close to full humidification, while eliminating channel flooding. The entire cycle is divided into four stages: saturation and de-saturation of the gas diffusion layer followed by de-hydration and hydration of membrane. By controlling the duration of dry and humid flows, it is shown that the cell voltage can be maintained within a narrow band. The technique is applied on experimental test cells using both plain and hydrophobic materials for the gas diffusion layer and an improvement in performance as compared to steady humidification is demonstrated. Duration of dry and humid flows is determined experimentally for several operating conditions. © 2010 Elsevier B.V. All rights reserved.
    Citation
    Hussaini IS, Wang CY (2010) Dynamic water management of polymer electrolyte membrane fuel cells using intermittent RH control. Journal of Power Sources 195: 3822–3829. Available: http://dx.doi.org/10.1016/j.jpowsour.2009.12.112.
    Sponsors
    Partial support of this work by Ford Motor Co. through a University Research Program is gratefully acknowledged. I.S.H. also acknowledges King Abdullah University of Science and Technology (KAUST), Saudi Arabia for a fellowship award.
    Publisher
    Elsevier BV
    Journal
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2009.12.112
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jpowsour.2009.12.112
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