Abstract
Dihydrogen peroxide production on platinum particles supported on carbon inside a proton exchange membrane (Nafion®), that is, under the working conditions of PEMFC cathodes, is rather small at the usual oxygen reduction potentials. As on bulk platinum, a four-electron mechanism appears to be the main pathway, with particle size and carbon substrate effects on the H2O2 production. A large increase in the H2O2 contribution takes place at low potentials, that is, at the working potentials of PEMFC anodes.
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Antoine, O., Durand, R. RRDE study of oxygen reduction on Pt nanoparticles inside Nafion®: H2O2 production in PEMFC cathode conditions. Journal of Applied Electrochemistry 30, 839–844 (2000). https://doi.org/10.1023/A:1003999818560
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DOI: https://doi.org/10.1023/A:1003999818560