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We present a planar micro-direct methanol fuel cell (μ-DMFC) fabricated by rapid prototyping-powder blasting technology. Using an elastomeric mask, we pattern two parallel microfluidic channels in glass. The anode and cathode of the fuel cell are formed by wet spraying Pt–Ru/C and Pt/C catalysts, respectively, onto Au electrodes that are evaporated in the microchannels. Simply clamping a Nafion 117...
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