Pt-Ru/multi-walled carbon nanotubes as electrocatalysts for direct methanol fuel cell

被引：128

作者：

Jha, Neetu ^{[1
]}

Reddy, A. Leela Mohana ^{[1
]}

Shaijumon, M. M. ^{[1
]}

Rajalakshmi, N. ^{[2
]}

Ramaprabhu, S. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Alternat Energy Technol Lab, Madras 600036, Tamil Nadu, India

[2] Ctr Fuel Cell Technol, Madras 601302, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 01期

关键词：

carbon nanotubes; catalyst support; electrocatalyst; direct methanol fuel cell; polarization characteristics;

D O I：

10.1016/j.ijhydene.2007.07.064

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：

Multi-walled carbon nanotubes (MWNTs) have been synthesized by hemical vapour deposition technique using AB(3) alloy hydride catalyst and platinum supported MWNT (Pt/MWNT) and platinum-ruthenium supported MWNT (Pt-Ru/MWNT) electrocatalysts have been prepared by chemical reduction method. MWNT and electrocatalysts have been characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and energy dispersive X-ray analysis (EDX). The anode and cathode electrodes of direct methanol fuel cells (DMFC) have been fabricated using Pt-Ru/MWNT and 1: 1 Pt/MWNT + Pt/C electrocatalyst, respectively. Performances of DMFC with these electrodes have been studied at different temperatures and the results have been discussed. A maximum power density of 39.3 mW/cm(2) at a current density of 130 mA/cm(2) has been obtained, which could be attributed to dispersion and accessibility of MWNT support and Pt-Ru in the electrocatalyst mixture for methanol oxidation reaction. (C) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：427 / 433

页数：7

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