Platinum/multiwalled carbon nanotubes-platinum/carbon composites as electrocatalysts for oxygen reduction reaction in proton exchange membrane fuel cell

被引：78
|
作者：
Shaijumon, M. M.
Ramaprabhu, S. [1 ]
Rajalakshmi, N.
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：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 25期
关键词：
D O I：
10.1063/1.2214139
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Pt-loaded multiwalled carbon nanotubes (Pt/MWCNTs) have been prepared by chemical reduction method using functionalized MWCNT synthesized by pyrolysis of acetylene over MmNi(2) (Mm denotes misch metal) hydride catalyst. Composites of Pt/MWCNT and commercial Pt-loaded carbon black (Pt/C) have been used as electrocatalysts for oxygen reduction reaction in proton exchange membrane fuel cell (PEMFC). Cathode catalyst with 50% Pt/MWCNT and 50% Pt/C showed best performance due to better dispersion and good accessibility of MWCNT support and Pt electrocatalysts for oxygen reduction reaction in PEMFC. A maximum performance of 540 mV at a current density of around 535 mA cm(-2) has been obtained. (c) 2006 American Institute of Physics.
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