Electrochemically synthesized Cu/Pt core-shell catalysts on a porous carbon electrode for polymer electrolyte membrane fuel cells

被引：81

作者：

Wei, Z. D. ^{[1
,2
]}

Feng, Y. C. ^{[1
]}

Li, L. ^{[1
,3
]}

Liao, M. J. ^{[1
]}

Fu, Y. ^{[1
]}

Sun, C. X. ^{[2
]}

Shao, Z. G. ^{[4
]}

Shen, P. K. ^{[5
]}

机构：

[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

[3] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

[5] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2008年 / 180卷 / 01期

关键词：

core-shell catalyst; PEMFC; electrodeposition; electrocatalysis; platinum;

D O I：

10.1016/j.jpowsour.2008.01.086

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：

A novel two-step method has been developed to efficiently prepare Cu/Pt core-shell structured catalysts for the first time. The Cu is first electrodeposited on the surface of the porous carbon electrode (PCE) and the deposited Cu is then partially replaced by Pt spontaneously. The addition of the thiourea (TU) along with the pH adjustment can tremendously reduce the self-dissolution of Cu due to dissolved oxygen. The results show that Cu/Pt core-shell structured catalysts display very good activities even at very low Pt loadings. The peak power density of a single cell using Cu/Pt core-shell structured catalysts is over 0.9 W cm(-1) at Pt loadings as low as 0.24 mg cm(-2) on each cathode and anode. This study shows that it is possible to apply this method for fabrication various core-shell structured functional materials. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：84 / 91

页数：8

共 25 条

[1] Catalyst gradient for cathode active layer of proton exchange membrane fuel cell [J].

Antoine, O ;

Bultel, Y ;

Ozil, P ;

Durand, R .

ELECTROCHIMICA ACTA, 2000, 45 (27) :4493-4500

[2] A class of non-precious metal composite catalysts for fuel cells [J].

Bashyam, Rajesh ;

Zelenay, Piotr .

NATURE, 2006, 443 (7107) :63-66

[3]

CAI SX, 1984, NOBLE METAL ANAL, P199

[4] Electrode fabrication for proton exchange membrane fuel cells by pulse electrodeposition [J].

Choi, KH ;

Kim, HS ;

Lee, TH .

JOURNAL OF POWER SOURCES, 1998, 75 (02) :230-235

[5] Preparation of a Pt-Ru/C catalyst from carbonyl complexes for fuel cell applications [J].

Dickinson, AJ ;

Carrette, LPL ;

Collins, JA ;

Friedrich, KA ;

Stimming, U .

ELECTROCHIMICA ACTA, 2002, 47 (22-23) :3733-3739

[6] High performance proton exchange membrane fuel cells with sputter-deposited Pt layer electrodes [J].

Hirano, S ;

Kim, J ;

Srinivasan, S .

ELECTROCHIMICA ACTA, 1997, 42 (10) :1587-1593

[7] Electrodeposition of monodisperse copper nanoparticles on highly oriented pyrolytic graphite electrode with modulation potential method [J].

Huang, L ;

Lee, ES ;

Kim, KB .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 262 (1-3) :125-131

[8] Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticles [J].

Joo, SH ;

Choi, SJ ;

Oh, I ;

Kwak, J ;

Liu, Z ;

Terasaki, O ;

Ryoo, R .

NATURE, 2001, 412 (6843) :169-172

[9] Core/shell gold nanoparticles by self-assembly and crosslinking of micellar, block-copolymer shells [J].

Kang, YJ ;

Taton, TA .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (03) :409-412

[10] Preparation of low Pt loading electrodes on Nafion (Na+)-bonded carbon layer with galvanostatic pulses for PEMFC application [J].

Lee, Jaeseung ;

Seo, Jungsook ;

Han, Kookil ;

Kim, Hasuck .

JOURNAL OF POWER SOURCES, 2006, 163 (01) :349-356

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