Electrooxidation frequency effect

The medium-frequency arc, the size of which is strongly dependent on the anode potential, corresponds to methanol electrooxidation kinetics. Note that different anode catalyst compositions and operating conditions of the DMFC can be evaluated by assessing their effects on anode performance. 

Gas-phase quantum chemistry (QC) calculations of CO and OH adsorption on Pt-based anodes provide valuable information on structure and energetics of adsorbates (for e.g. see [15, 19, 21]). A detailed review of CO adsorption calculation was presented by Fiebelman and co-workers [15]. Detailed CO and OH adsorption calculations on Pt-based electrodes have also been reported (for e.g. see [19] and references therein). Potential effects on CO binding energy and frequency have been discussed in detail by Koper and coworkers [20]. However, these calculations do not attempt to investigate the mechanism of the CO electrooxidation. Anderson and co-workers have used first-principle QC chemistry and semi-empirical calculations to understand the effect of potential on fuel cell electrochemistry in general, and CO oxidation electrochemistry in particular [16, 32, 33]. 

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