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

Hyo Jin Ahn; Ja Soon Jang; Yung Eun Sung; Tae Yeon Seong

doi:10.1016/j.jallcom.2008.06.063

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

Hyo Jin Ahn, Ja Soon Jang, Yung Eun Sung, Tae Yeon Seong

Department of Materials Science and Engineering

Research output: Contribution to journal › Letter › peer-review

17 Citations (Scopus)

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 ∼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.

Original language	English
Pages (from-to)	L28-L32
Journal	Journal of Alloys and Compounds
Volume	473
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.06.063
Publication status	Published - 2009 Apr 3

Keywords

Electrochemical reactions
Electrode materials
Nanostructured materials

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2008.06.063

Cite this

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title = "Optimum condition for the growth of Pt-CeO2 nanocomposite electrodes for thin-film fuel cells",

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 ∼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.",

keywords = "Electrochemical reactions, Electrode materials, Nanostructured materials",

author = "Ahn, {Hyo Jin} and Jang, {Ja Soon} and Sung, {Yung Eun} and Seong, {Tae Yeon}",

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TY - JOUR

T1 - Optimum condition for the growth of Pt-CeO2 nanocomposite electrodes for thin-film fuel cells

AU - Ahn, Hyo Jin

AU - Jang, Ja Soon

AU - Sung, Yung Eun

AU - Seong, Tae Yeon

PY - 2009/4/3

Y1 - 2009/4/3

N2 - 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 ∼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.

AB - 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 ∼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.

KW - Electrochemical reactions

KW - Electrode materials

KW - Nanostructured materials

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