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Article Dans Une Revue Applied Catalysis A : General Année : 2012

New life of a forgotten method: Electrochemical route toward highly efficient Pt/C catalysts for low-temperature fuel cells

Résumé

Driven by global environmental concerns, great efforts are currently made to develop novel, cheap and practical means for producing highly efficient electrocatalysts, specifically for the low-temperature fuelcell applications. Employing an old but yet unexplored method based on electrochemical dispergation of platinum by the alternating current, we show that the freshly prepared Pt/C catalysts exhibit greatly enhanced catalytic activity (up to 350% for oxygen reduction and up to 200% for ethylene glycol oxidation) as compared with that of a commercially available counterpart (E-TEK). A key role in these reactions is attributed to a specific nanoparticle morphology. These findings should provide a revival of an ancient but simple and efficient electrochemical process and motivate further researches in the field.

Dates et versions

hal-00708576 , version 1 (15-06-2012)

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I.N. Leontyev, A. Kuriganova, Y. Kudryavtsev, B. Dkhil, N. Smirnova. New life of a forgotten method: Electrochemical route toward highly efficient Pt/C catalysts for low-temperature fuel cells. Applied Catalysis A : General, 2012, 431-432, pp.120-125. ⟨10.1016/j.apcata.2012.04.025⟩. ⟨hal-00708576⟩
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