期刊
JOURNAL OF APPLIED ELECTROCHEMISTRY
卷 30, 期 7, 页码 839-844出版社
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1003999818560
关键词
dihydrogen peroxide; nanoparticle; oxygen reduction reaction; platinum; rotating ring-disc electrode; size effect
Dihydrogen peroxide production on platinum particles supported on carbon inside a proton exchange membrane (Nafion(R)), 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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