Spillover effect induced Pt-TiO2/C as ethanol tolerant oxygen reduction reaction catalyst for direct ethanol fuel cells

被引：26
|
作者：
Meenakshi, S. [1 ]
Nishanth, K. G. [1 ]
Sridhar, P. [1 ]
Pitchumani, S. [1 ]
机构：
[1] CSIR, Cent Electrochem Res Inst, Madras Unit, Madras 600113, Tamil Nadu, India
来源：
ELECTROCHIMICA ACTA | 2014年 / 135卷
关键词：
Composite materials; chemical synthesis; electrochemical techniques; electrochemical properties; ELECTRONIC INTERACTIVE NATURE; CATHODE CATALYST; PT-FE/C; CO; ELECTROCATALYSTS; ALLOY; NANOPARTICLES; SYNERGISM;
D O I：
10.1016/j.electacta.2014.04.142
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hypo-hyper-d-electronic interactive nature is used to develop a new carbon supported HT-Pt-TiO2 composite catalyst comprising Pt and Ti in varying atomic ratio, namely 1:1, 2:1 and 3:1. The electro-catalysts are characterized by XRD, TEM, SEM-EDAX, Cyclic Voltammetry (CV) and Linear sweep voltammetry (LSV) techniques. HT-Pt-TiO2/C catalysts exhibit significant improvement in oxygen reduction reaction (ORR) over Pt/C. The effect of composition towards ORR with and without ethanol has been studied. The direct ethanol fuel cell (DEFC) with HT-Pt-TiO2/C cathode catalyst exhibits an enhanced peak power density of 41 mW cm(-2), whereas 21 mW cm(-2) is obtained for the DEFCs with carbon-supported Pt catalyst operating under identical conditions. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：52 / 59
页数：8
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