Carbon-supported Pt encapsulated Pd nanostructure as methanol-tolerant oxygen reduction electro-catalyst

被引：27
作者：
Nishanth, Karimbintherikkal Gopalan [1 ]
Sridhar, Parthasarathi [1 ]
Pitchumani, Sethuraman [1 ]
机构：
[1] CSIR Cent Electrochem Res Inst, Madras Unit, Madras 600113, Tamil Nadu, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 01期
关键词：
Electro-catalyst; Fuel cell; Oxygen reduction reaction; Methanol tolerance; Core-shell nanostructure; Direct methanol fuel cell; ELECTROCATALYSTS; ALLOY; NANOPARTICLES;
D O I：
10.1016/j.ijhydene.2012.06.116
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：
Pt@Pd/C nanoparticle was prepared by the galvanic displacement reaction between Pt4+ and Pd. A simple synthesis strategy was followed to prepare carbon-supported Pd nanostructure. Pt modified Pd nanostructure on carbon was characterized by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Cyclic Voltammetry and Linear Sweep Voltammetry. Pt@Pd/C electro-catalyst exhibited higher catalytic activity toward oxygen reduction reaction with excellent methanol tolerance than Pt/C. Pt@Pd/C catalyst showed consistent catalytic activity before and after the durability study. Higher methanol tolerance of Pt@Pd/C with less Pt content than Pt/C suggests that it could be a potential alternative cathode electro-catalyst for DMFCs. Copyright (c) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：612 / 619
页数：8
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