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Novel Nanoscale Ceria–Platinum Composite Electrodes for Direct Alcohol Electro-Oxidation

Authors
  • Díaz, Diego J.1, 2
  • Greenletch, Nathan1
  • Solanki, Avni1
  • Karakoti, Ajay3
  • Seal, Sudipta2, 3, 4
  • 1 University of Central Florida, Department of Chemistry, 4000 Central Florida Blvd., Orlando, FL, 32816, USA , Orlando (United States)
  • 2 University of Central Florida, Nanoscience Technology Center, 4000 Central Florida Blvd., Orlando, FL, 32816, USA , Orlando (United States)
  • 3 University of Central Florida, Mechanical, Material and, Aerospace Engineering (MMAE) Department, 4000 Central Florida Blvd., Orlando, FL, 32816, USA , Orlando (United States)
  • 4 University of Central Florida, Advanced Materials Processing and Analysis Center (AMPAC), 4000 Central Florida Blvd., Orlando, FL, 32816, USA , Orlando (United States)
Type
Published Article
Journal
Catalysis Letters
Publisher
Springer US
Publication Date
Sep 05, 2007
Volume
119
Issue
3-4
Pages
319–326
Identifiers
DOI: 10.1007/s10562-007-9238-y
Source
Springer Nature
Keywords
License
Yellow

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.

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