Ultra low Pt-loading electrode prepared by displacement of electrodeposited Cu particles on a porous carbon electrode

被引：27
作者：
Liao, M. J. [1 ]
Wei, Z. D. [1 ,2 ]
Chen, S. G. [2 ]
Li, L. [1 ,2 ]
Ji, M. B. [2 ]
Wang, Y. Q. [2 ]
机构：
[1] Chongqing Univ, Sch Chem & Chem Engn, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 15期
关键词：
Electrocatalysis; Pt; PEMFC; Oxygen reduction reaction; Fuel cells; OXYGEN REDUCTION REACTION; MEMBRANE FUEL-CELL; CATALYST LAYER; ELECTROCATALYSTS; PLATINUM; PEMFC; DEPOSITION; ELECTROOXIDATION; PERFORMANCE; NANOTUBES;
D O I：
10.1016/j.ijhydene.2010.01.077
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：
Ultra low Pt-loading and high Pt utilization electrodes were prepared by displacement of electrodeposited Cu on a porous carbon electrode. Copper particles were electrodeposited on a porous carbon electrode (PCE) by four-step deposition (FSD) at first. The size and dispersion of deposited Cu particles were markedly improved with application of the FSD. The Cu deposits were then displaced by platinum as dipping a Cu/PCE in a platinum salt solution. Sequentially, Pt particles supported on the PCE were obtained. The Pt/PCE electrode prepared via the FSD of Cu overcomes the problem of the hydrogen evolution reaction accompanied with direct platinum electrochemical deposition, and has a high Pt dispersion. The single cell consisting of the electrodes Pt/PCE via the FSD of Cu outputs a power of 0.45 W cm(-2) with ultra low Pt loadings of 0.196 mg cm(-2) MEA (0.098 mg cm(-2) per each side of the MEA) at no backpressure of reactant gases. (c) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：8071 / 8079
页数：9
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