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Optimum condition for the growth of Pt-CeO2 nanocomposite electrodes for thin-film fuel cells

Authors
Ahn, Hyo-JinJang, Ja-SoonSung, Yung EunSeong, Tae-Yeon
Issue Date
3-4월-2009
Publisher
ELSEVIER SCIENCE SA
Keywords
Electrode materials; Nanostructured materials; Electrochemical reactions
Citation
JOURNAL OF ALLOYS AND COMPOUNDS, v.473, no.1-2, pp.L28 - L32
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ALLOYS AND COMPOUNDS
Volume
473
Number
1-2
Start Page
L28
End Page
L32
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120254
DOI
10.1016/j.jallcom.2008.06.063
ISSN
0925-8388
Abstract
We fabricated three types of nanocomposite electrodes consisting of different amounts of metallic Pt nanostructures and amorphous CeO2 using a co-sputtering method and investigated the optimum conditions for enhancing their electro-oxidation properties in direct methanol thin-film fuel cells. The high-resolution electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy results show the formation of metallic Pt nanostructures embedded within an amorphous CeO2 matrix (i.e., Pt-CeO2 nanocomposite). The cyclic voltammetry and chronoamperometry results demonstrate that the nanocomposite electrode containing similar to 87.2 wt% of Pt shows the best catalytic activity of methanol electro-oxidation, the highest electrochemical active surface (EAS) area, and the best electrochemical stability among the three samples for direct methanol thin-film fuel cells. (C) 2008 Elsevier B.V. All rights reserved.
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SEONG, TAE YEON
공과대학 (신소재공학부)
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