• new life of a forgotten method: electrochemical route toward highly efficient pt/c catalysts for low-temperature fuel cells

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 958
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     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 fuel-cell 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.

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