(Figure Presented) Different anode catalysts (Pt/C, PtRu/C, Pt 3Sn/C) and operating potentials lead to different product distributions in the anode exhaust of direct ethanol fuel cells, as shown by liquid-state 13C NMR spectroscopy (see typical spectrum). Addition of Ru or Sn to Pt/C increases current density, mainly because of enhanced acetic acid production, and the potential dependences of products give clues to reaction pathways of ethanol electro-oxidation.
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Kim et al. (2011) studied this question.