A simple model to assess the contribution of alloyed and non-alloyed platinum and tin to the ethanol oxidation reaction on Pt-Sn/C catalysts: Application to direct ethanol fuel cell performance

被引：33

作者：

Antolini, Ermete ^{[1
,2
]}

Gonzalez, Ernesto R. ^{[2
]}

机构：

[1] Scuola Sci Mat, I-16016 Genoa, Italy

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 22期

关键词：

Fuel cell; Ethanol oxidation; Pt-Sn/C; Electrocatalysts; ANODE CATALYSTS; FORMIC-ACID; ELECTROOXIDATION; ELECTROCATALYSTS; REDUCTION; ALCOHOLS; METHANOL;

D O I：

10.1016/j.electacta.2010.06.035

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A simple model is proposed to evaluate the contribution of alloyed and non-alloyed platinum and tin to the ethanol oxidation reaction on Pt-Sn/C catalysts for direct ethanol fuel cells. On the basis of the model, the ethanol oxidation on partially alloyed catalysts occurs through a dual pathway mechanism, separately involving the Pt3Sn phase and Pt-SnOx. The model, validated by experimental data, can predict the performance of a single direct ethanol fuel cell by varying the Sn content and/or the degree of alloying of Pt-Sn/C catalysts used as the anode material. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：6485 / 6490

页数：6

共 26 条

[1] Catalysts for direct ethanol fuel cells [J].

Antolini, Ermete .

JOURNAL OF POWER SOURCES, 2007, 170 (01) :1-12

[2] Effect of thermal treatment on phase composition and ethanol oxidation activity of a carbon supported Pt50Sn50 alloy catalyst [J].

Colmati, F. ;

Antolini, E. ;

Gonzalez, E. R. .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2008, 12 (05) :591-599

[3] Ethanol oxidation on a carbon-supported Pt75Sn25 electrocatalyst prepared by reduction with formic acid:: Effect of thermal treatment [J].

Colmati, Flavio ;

Antolini, Ermete ;

Gonzalez, Emesto R. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 73 (1-2) :106-115

[4] Ethanol oxidation on novel, carbon supported Pt alloy catalysts - Model studies under defined diffusion conditions [J].

Colmenares, L. ;

Wang, H. ;

Jusys, Z. ;

Jiang, L. ;

Yan, S. ;

Sun, G. Q. ;

Behm, R. J. .

ELECTROCHIMICA ACTA, 2006, 52 (01) :221-233

[5] Alloys and oxides on carbon-supported Pt-Sn electrocatalysts for ethanol oxidation [J].

Godoi, D. R. M. ;

Perez, J. ;

Villullas, H. M. .

JOURNAL OF POWER SOURCES, 2010, 195 (11) :3394-3401

[6] Enhanced activity of PtSn/C anodic electrocatalyst prepared by formic acid reduction for direct ethanol fuel cells [J].

Guo, Yonglang ;

Zheng, Yanzhen ;

Huang, Meihua .

ELECTROCHIMICA ACTA, 2008, 53 (07) :3102-3108

[7] Structure Pt3Sn(110) studied by scanning tunneling microscopy -: art. no. 245403 [J].

Hoheisel, M ;

Speller, S ;

Kuntze, J ;

Atrei, A ;

Bardi, U ;

Heiland, W .

PHYSICAL REVIEW B, 2001, 63 (24)

[8] Ethanol electrooxidation on novel carbon supported Pt/SnOx/C catalysts with varied Pt:Sn ratio [J].

Jiang, L. ;

Colmenares, L. ;

Jusys, Z. ;

Sun, G. Q. ;

Behm, R. J. .

ELECTROCHIMICA ACTA, 2007, 53 (02) :377-389

[9] Structure and chemical composition of supported Pt-Sn electrocatalysts for ethanol oxidation [J].

Jiang, LH ;

Sun, GQ ;

Sun, SG ;

Liu, JG ;

Tang, SH ;

Li, HQ ;

Zhou, B ;

Xin, Q .

ELECTROCHIMICA ACTA, 2005, 50 (27) :5384-5389

[10] Influence of Sn content on PtSn/C catalysts for electrooxidation of C1-C3 alcohols:: Synthesis, characterization, and electrocatalytic activity [J].

Kim, Jae Hong ;

Choi, Sung Mook ;

Nam, Sang Hoon ;

Seo, Min Ho ;

Choi, Sun Hee ;

Kim, Won Bae .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 82 (1-2) :89-102

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