Microfluidic direct methanol fuel cell (DMFC) overcome some key issues- fuel crossover and water management - that typically hampers conventional polymer electrolyte-based fuel cells. Here we report a method to further minimize fuel crossover in microfluidic DMFC. First, a polymer separator at the interface of the fuel and electrolyte streams in a single-channel microfluidic DMFC to reduce the cross-sectional area across which methanol can diffuse. Maximum power densities of 6.8 mW cm−2 were obtained with a separator with when using 2 M methanol. This simple design improvement reduces loss at the cathode leading to better performance.


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    Title :

    Polymer separator to minimize crossover in microfluidic direct methanol fuel cells


    Contributors:
    Weiwei Huo (author) / Fengchun Sun (author) / Hongwen He (author)


    Publication date :

    2014-08-01


    Size :

    473246 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English