Novel nanoscale ceria-platinum composite electrodes for direct alcohol electro-oxidation

    Authors

    D. J. Diaz; N. Greenletch; A. Solanki; A. Karakoti;S. Seal

    Comments

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    Abbreviated Journal Title

    Catal. Lett.

    Keywords

    direct alcohol fuel cells; ceria; oxidation; catalysis; electrochemistry; methanol; METHANOL FUEL-CELLS; ELECTROCHEMICAL OXIDATION; ELECTROCATALYTIC; OXIDATION; CARBON-MONOXIDE; ETHANOL; RUTHENIUM; CATALYSTS; ACID; RU; SURFACES; Chemistry, Physical

    Abstract

    A nanocrystalline Pt/CeO2 composite electrode is fabricated to study the electrochemical oxidation of methanol and ethanol. Three different methods have been developed for the preparation of the composite electrode and are compared in terms of their oxidation efficiencies. In general, all the electrode preparation methodologies show a great enhancement of the oxidation current for the alcohol. However, methods based on the electrodeposition of a ceria rich Pt matrix show the greatest effectiveness of alcohol oxidation. The enhancement of the anodic current is dependent on the particle loading and size distribution in the composite matrix. In general, ceria appears to be an effective alternative to ruthenium in direct alcohol fuel cells.

    Journal Title

    Catalysis Letters

    Volume

    119

    Issue/Number

    3-4

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    319

    Last Page

    326

    WOS Identifier

    WOS:000250996200019

    ISSN

    1011-372X

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