We report a Nafion 112 (DuPont)-based membrane containing a recast film made of sulfonated poly(vinyl alcohol) and Nafion composite for the direct methanol fuel cell (DMFC). Without a significant increase in the membrane resistance, this composite membrane demonstrates a reduction of the methanol permeation rate by as much as 48% when compared to the native Nafion. This membrane is mechanically robust and should be a suitable membrane electrolyte for the DMFC.
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Shao et al. (2002) studied this question.
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