Evaluation of Pt40Pd60/MWCNT electrocatalyst as ethylene glycol-tolerant oxygen reduction cathodes

被引：27
作者：
Morales-Acosta, D. [2 ]
Arriaga, L. G. [2 ]
Alvarez-Contreras, L. [3 ]
Luna, S. Fraire [1 ]
Rodriguez Varela, F. J. [1 ]
机构：
[1] Cinvestav Unidad Saitillo, Ramos Arizpe 25900, Coahuila, Mexico
[2] Ctr Invest & Desarrollo Tecnol Eletroquim, Pedro Escobedo 76703, Queretaro, Mexico
[3] Ctr Invest Mat Avanzados SC, Chihuahua 31109, Chih, Mexico
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 07期
关键词：
MWCNTs; Pt-Pd alloys; Ethylene glycol; Oxygen reduction reaction; Direct Ethylene Glycol Fuel Cells; ETHANOL FUEL-CELLS; CARBON NANOTUBES; ALLOY; OXIDATION; METHANOL; NANOPARTICLES;
D O I：
10.1016/j.elecom.2009.05.019
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Pt-Pd/MWCNT with Pt:Pd atomic ratio 40:60 and Pt/MWCNT electrocatalyst were synthesized and evaluated as oxygen reduction reaction (ORR) cathodes for Direct Ethylene Glycol Fuel Cells (DEGFC) applications. As reference, a commercial Pt/C material was also tested. We found that Pt-Pd/MWCNT has high tolerance capability to EG and higher selectivity for the ORR compared to the Pt-alone materials. As a result, the shift in onset potential for the ORR, E-onset, at Pt-Pd/MWCNT was considerably smaller than the shift at Pt/MWCNT or Pt/C. The average particle size (from XRD) was 3.5 and 4 nm for Pt/MWCNT and Pt-Pd/MWCNT, respectively. A moderate degree of alloying was determined for the Pt-Pd material. An advantageous application of Pt-Pd electrocatalysts should be in DEGFCs. (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1414 / 1417
页数：4
相关论文
共 17 条
[1]   Development of Pt and Pt-Fe catalysts supported on multiwalled carbon nanotubes for oxygen reduction in direct methanol fuel cells [J].
Baglio, V. ;
Di Blasi, A. ;
D'Urso, C. ;
Antonucci, V. ;
Arico, A. S. ;
Ornelas, R. ;
Morales-Acosta, D. ;
Ledesma-Garcia, J. ;
Godinez, L. A. ;
Arriaga, L. G. ;
Alvarez-Contreras, L. .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (08) :B829-B833
[2]   On the electrocatalysis of ethylene glycol oxidation [J].
de Lima, RB ;
Paganin, V ;
Iwasita, T ;
Vielstich, W .
ELECTROCHIMICA ACTA, 2003, 49 (01) :85-91
[3]   How green are the chemicals used as liquid fuels in direct liquid-feed fuel cells? [J].
Demirci, Umit B. .
ENVIRONMENT INTERNATIONAL, 2009, 35 (03) :626-631
[4]   Oxygen reduction at Pt and Pt70Ni30 in H2SO4/CH3OH solution [J].
Drillet, JF ;
Ee, A ;
Friedemann, J ;
Kötz, R ;
Schnyder, B ;
Schmidt, VM .
ELECTROCHIMICA ACTA, 2002, 47 (12) :1983-1988
[5]   Sub-stoichiometric titanium oxide-supported platinum electrocatalyst for polymer electrolyte fuel cells [J].
Ioroi, T ;
Siroma, Z ;
Fujiwara, N ;
Yamazaki, S ;
Yasuda, K .
ELECTROCHEMISTRY COMMUNICATIONS, 2005, 7 (02) :183-188
[6]   Direct ethylene glycol fuel-cell stack - Study of oxidation intermediate products [J].
Livshits, V. ;
Philosoph, A. ;
Peled, E. .
JOURNAL OF POWER SOURCES, 2008, 178 (02) :687-691
[7]   Carbon supported Pt-Pd alloy as an ethanol tolerant oxygen reduction electrocatalyst for direct ethanol fuel cells [J].
Lopes, T. ;
Antolini, E. ;
Gonzalez, E. R. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (20) :5563-5570
[8]   Carbon supported Pt-Co (3:1) alloy as improved cathode electrocatalyst for direct ethanol fuel cells [J].
Lopes, Thiago ;
Antolini, Ermete ;
Colmati, Flavio ;
Gonzalez, Ernesto R. .
JOURNAL OF POWER SOURCES, 2007, 164 (01) :111-114
[9]   Electrochemical Durability of Carbon Nanostructures as Catalyst Support for PEMFCs [J].
Natarajan, Sadesh Kumar ;
Hamelin, Jean .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (02) :B210-B215
[10]   High-power direct ethylene glycol fuel cell (DEGFC) based on nanoporous proton-conducting membrane (NP-PCM) [J].
Peled, E ;
Livshits, V ;
Duvdevani, T .
JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :245-248
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