PtRu/C-Au/TiO2 electrocatalyst for a direct methanol fuel cell

被引：92

作者：

Kim, Hyun-Jong

Kim, Do-Young

Han, Haksoo

Shul, Yong-Gun ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea

[2] Yonsei Univ, Yonsei Ctr Clean Technol, Seoul 120749, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 159卷 / 01期

关键词：

PtRu/C-Au/TiO2; electrocatalyst; cyclic voltammometry; CO-stripping; high-throughput-screening test; direct methanol fuel cell;

D O I：

10.1016/j.jpowsour.2005.10.101

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：

Au/TiO2 is added to a PtRu/C electrode to improve the performance of a direct methanol fuel cell (DMFC). A high-throughput-screening test is performed for the fast screening of the loading of Au/TiO2 on PtRu/C. The electrochemically-active surface area of PtRu/C-Au/TiO2 and PtRu/C is determined from cyclic voltammetry. In CO-stripping and methanol oxidation voltammetry, PtRu/C-Au/TiO2 exhibits better activity for CO and methanol oxidation than PtRu/C. The performance of the DMFC is also improved by addition of Au/TiO2 to the PtRu/C electrode. The CO adsorbed on Pt may move to the surface of the Au/TiO2 by the interaction between PtRu/C and Au/TiO2. The improved performance of the PtRu/C-Au/TiO2 catalyst is explained in terms of preferential oxidation of CO or CO-like poisoning species that are generated during the oxidation of methanol on PtRu/C. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：484 / 490

页数：7

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