Modified catalytic materials for ethanol oxidation

被引：36

作者：

Bonesi, A. R. ^{[1
]}

Moreno, M. S. ^{[2
]}

Triaca, W. E. ^{[1
]}

Castro Luna, A. M. ^{[1
]}

机构：

[1] Natl Univ La Plata, INIFTA, Fac Ciencias Exactas, RA-1900 La Plata, Argentina

[2] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 11期

关键词：

Platinum; Tin; Nickel; Ethanol oxidation; Vulcan chemically treated; FUEL-CELLS; ELECTROCATALYSTS; METHANOL;

D O I：

10.1016/j.ijhydene.2009.12.093

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-Sn-Ni/C and the Pt-Sn/C supported catalysts with potential application in a direct ethanol fuel cell (DEFC) were prepared by a chemical reduction method. The Vulcan XC-72R (Vu) used as carbon support was chemically treated with concentrated HNO3 (Vu(t)) and then analyzed by thermal programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS). The catalyst particles were characterized by high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) measurements were performed by using a glassy carbon working electrode covered with the catalyst powder in a 1M ethanol + 0.5M H2SO4 solution at 60 degrees C. EIS shows that ethanol oxidation (EO) on the Pt-Sn-Ni/Vu(t) catalyst at various potentials exhibits different impedance behaviors. The catalytic activity of the Pt-Sn-Ni/Vu(t) catalyst for EO is higher than that of the Pt-Sn/Vu(t) catalyst. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：5999 / 6004

页数：6

共 17 条

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

Antolini, Ermete .

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

[2]

Aricò AS, 2001, FUEL CELLS, V1, P133

[3] Synthesis and characterization of new electrocatalysts for ethanol oxidation [J].

Bonesi, A. ;

Garaventa, G. ;

Triaca, W. E. ;

Castro Luna, A. M. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (13) :3499-3501

[4] Parallel pathways of ethanol oxidation: The effect of ethanol concentration [J].

Camara, GA ;

Iwasita, T .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2005, 578 (02) :315-321

[5] Polymer-mediated synthesis of highly dispersed Pt nanoparticles on carbon black [J].

Chen, M ;

Xing, YC .

LANGMUIR, 2005, 21 (20) :9334-9338

[6] Preparation, structural characterization and activity for ethanol oxidation of carbon supported ternary Pt-Sn-Rh catalysts [J].

Colmati, F. ;

Antolini, E. ;

Gonzalez, E. R. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 456 (1-2) :264-270

[7] 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

[8] Review of different methods for developing nanoelectrocatalysts for the oxidation of organic compounds [J].

Coutanceau, C. ;

Brimaud, S. ;

Lamy, C. ;

Leger, J. -M. ;

Dubau, L. ;

Rousseau, S. ;

Vigier, F. .

ELECTROCHIMICA ACTA, 2008, 53 (23) :6865-6880

[9] Characterization of the surface chemistry of carbon materials by potentiometric titrations and temperature-programmed desorption [J].

Gorgulho, Honoria F. ;

Mesquita, Joao P. ;

Goncalves, Filomena ;

Pereira, Manuel Fernando R. ;

Figueiredo, Jose L. .

CARBON, 2008, 46 (12) :1544-1555

[10] Surface-modified carbons as platinum catalyst support for PEM fuel cells [J].

Guha, Abhishek ;

Lu, Weijie ;

Zawodzinski, Thomas A., Jr. ;

Schiraldi, David A. .

CARBON, 2007, 45 (07) :1506-1517

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