Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 12, Issue 5, Pages 569-574Publisher
SPRINGER
DOI: 10.1007/s10008-007-0398-x
Keywords
polypyrrole; composites; nanoparticles; platinum-carbonyl; substrate effect
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Conducting polypyrrole (PPy)/C (Vulcan XC-72) composite materials were synthesized by chemical polymerization method. These materials were used as matrix to support platinum nanoparticles, which were produced by the carbonyl chemical route. For the same catalyst loading (50 mu g cm(-2)), it was observed that the nature of the composite strongly influences the electrochemical activity of nanoparticulated platinum toward the oxygen reduction reaction in acid medium. The variation of the PPy/C ratio determines the so-called substrate effect for electrocatalysis.
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