Aging effects of nanoscale ceria in ceria-platinum composite electrodes for direct alcohol electro-oxidation

    Authors

    J. M. Anderson; J. Patel; A. S. Karakoti; N. Greeneltch; D. J. Diaz;S. Seal

    Comments

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    Abbreviated Journal Title

    Electrochim. Acta

    Keywords

    Fuel Cells; Ceria; DMFC; Electrocatalysis; METHANOL FUEL-CELLS; ANODE CATALYSTS; FORMIC-ACID; ETHANOL; NANOPARTICLES; TEMPERATURE; OXIDATION; NANOCERIA; GOLD; Electrochemistry

    Abstract

    Nanocrystalline Pt/CeO2 composite electrodes were fabricated to study the electrochemical oxidation of methanol and ethanol. The performance of the electrodes was tested as the ceria solutions aged over time. It was observed that the performance oscillated with time, suggesting that the catalytic behavior towards alcohol oxidation was greatly dependent on the aging of the particles. These results point to a great dependence of the catalytic effect on the redox state of the ceria particles. (C) 2010 Elsevier Ltd. All rights reserved.

    Journal Title

    Electrochimica Acta

    Volume

    56

    Issue/Number

    5

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    2541

    Last Page

    2545

    WOS Identifier

    WOS:000288227800088

    ISSN

    0013-4686

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