A proper amount of carbon nanotubes for improving the performance of Pt-Ru/C catalysts for methanol electro-oxidation

被引：14

作者：

Chi, Ching-Fa ^{[1
]}

Yang, Ming-Chang ^{[1
]}

Weng, Hung-Shan ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2009年 / 193卷 / 02期

关键词：

Methanol electro-oxidation; Pt-Ru catalysts; Carbon nanotubes; Mesoporous carbon; Direct methanol fuel cell; TEMPERATURE FUEL-CELLS; ELECTROCATALYTIC PROPERTIES; NANOPARTICLES; FABRICATION; OXIDATION; SUPPORTS;

D O I：

10.1016/j.jpowsour.2009.04.079

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：

This study aims to improve the performance of the anode catalyst in a direct methanol fuel cell by using carbon black (XC) and mesoporous carbon (MC) as supporting materials for preparing Pt-Ru/XC and Pt-Ru/MC catalysts. This study investigates the effect of adding different amounts of bare carbon nanotubes (CNTs) or carbon nanotubes impregnated with Pt and Ru (abbreviated as Pt-Ru/CNT, containing 10 wt.% Pt and Ru) to the prepared catalysts. Experimental results reveal that 10 wt.% Pt-Ru/C with carbon black and mesoporous carbon prepared by the multiple impregnation method had smaller Pt-Ru grain sizes and a better dispersion or carbon supports due to low precursor concentrations in each impregnation. These, in turn, achieved better electro-catalytic performance for methanol oxidation. Adding CNTs or Pt-Ru/CNT to Pt-Ru/XC and Pt-Ru/MC obviously improves their electro-catalytic characteristics. The appropriate amounts of bare CNT and Pt-Ru/CNT added to Pt-Ru/XC and Pt-Ru/MC catalysts are 5% and 20%, respectively. The resulting catalysts (both containing 10 wt.% Pt and Ru) produce activities similar to those of the E-TEK Pt-Ru/C catalyst containing 20 wt.% Pt and Ru. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：462 / 469

页数：8

共 23 条

[1] Status of the development of a direct methanol fuel cell [J].

Baldauf, M ;

Preidel, W .

JOURNAL OF POWER SOURCES, 1999, 84 (02) :161-166

[2] Alternative supports for the preparation of catalysts for low-temperature fuel cells: the use of carbon nanotubes [J].

Carmo, M ;

Paganin, VA ;

Rosolen, JM ;

Gonzalez, ER .

JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :169-176

[3] Preparation of carbon-supported PtRu nanoparticles for direct methanol fuel cell applications - a comparative study [J].

Deivaraj, TC ;

Lee, JY .

JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :43-49

[4] The role of carbon in fuel cells [J].

Dicks, Andrew L. .

JOURNAL OF POWER SOURCES, 2006, 156 (02) :128-141

[5] PARTICLE-SIZE EFFECT OF CARBON-SUPPORTED PLATINUM CATALYSTS FOR THE ELECTROOXIDATION OF METHANOL [J].

FRELINK, T ;

VISSCHER, W ;

VANVEEN, JAR .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 382 (1-2) :65-72

[6] Synthesis and performances of carbon-supported noble metal nanoclusters as electrodes for polymer electrolyte membrane fuel cells [J].

Gangeri, M. ;

Perathoner, S. ;

Centi, G. .

INORGANICA CHIMICA ACTA, 2006, 359 (15) :4828-4832

[7] Studies on the anode catalysts of carbon nanotube for DMFC [J].

Han, KI ;

Lee, JS ;

Park, SO ;

Lee, SW ;

Park, YW ;

Kim, H .

ELECTROCHIMICA ACTA, 2004, 50 (2-3) :791-794

[8] Electrodeposition of Pt-Ru nanoparticles on carbon nanotubes and their electrocatalytic properties for methanol electrooxidation [J].

He, ZB ;

Chen, JH ;

Liu, DY ;

Zhou, HH ;

Kuang, YF .

[9] Deposition and electrocatalytic properties of platinum nanoparticals on carbon nanotubes for methanol electrooxidation [J].

He, ZB ;

Chen, JH ;

Liu, DY ;

Tang, H ;

Deng, W ;

Kuang, WF .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 85 (2-3) :396-401

[10]

Hogarth MP, 2002, PLATIN MET REV, V46, P146

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