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

被引：15

作者：

Ahn, Hyo-Jin ^{[2
]}

Jang, Ja-Soon ^{[3
]}

Sung, Yung Eun ^{[4
]}

Seong, Tae-Yeon ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

[2] Gwangju Inst Sci &Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea

[3] Yeungnam Univ, Sch Elect Engn & Comp Sci, Gyongsan 712749, South Korea

[4] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 473卷 / 1-2期

关键词：

Electrode materials; Nanostructured materials; Electrochemical reactions; ELECTROCHEMICAL OXIDATION; METHANOL OXIDATION; ELECTROOXIDATION; CATALYSTS; ELECTROCATALYSTS; NANOPARTICLES; NANOFIBERS; SUPPORT;

D O I：

10.1016/j.jallcom.2008.06.063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：L28 / L32

页数：5

共 21 条

[1]

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