Pt-Ru-Ir nanoparticles prepared by vapor deposition as a very efficient anode catalyst for methanol fuel cells

被引:39
作者
Sivakumar, P [1 ]
Tricoli, V [1 ]
机构
[1] Univ Pisa, Dipartimento Ingn Chim, I-56126 Pisa, Italy
关键词
D O I
10.1149/1.2165709
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Preparation of Pt-Ru-Ir nanoparticle catalysts on carbon black by a novel vapor deposition method is reported. Particle size as assessed by transmission electron microscopy is ca. 2.5 nm with narrow distribution. Moreover, they are homogeneously dispersed on the substrate. The electrocatalytic activity of the particles toward methanol electro-oxidation was investigated by cyclic voltammetry, chronoamperometry at constant potential, and adsorbed CO-stripping voltammetry. It was found that these catalysts possess outstanding activity for methanol electro-oxidation. This is over one order of magnitude higher than in state of the art catalysts. The novel catalysts have the potential to bear significant performance improvement of direct methanol fuel cells. (c) 2006 The Electrochemical Society.
引用
收藏
页码:A167 / A170
页数:4
相关论文
共 15 条
[1]  
Aricò AS, 2001, FUEL CELLS, V1, P133
[2]   The impact of nanoscience on heterogeneous catalysis [J].
Bell, AT .
SCIENCE, 2003, 299 (5613) :1688-1691
[3]   CO adsorption and oxidation on bimetallic Pt/Ru(0001) surfaces - a combined STM and TPD/TPR study [J].
de Mongeot, FB ;
Scherer, M ;
Gleich, B ;
Kopatzki, E ;
Behm, RJ .
SURFACE SCIENCE, 1998, 411 (03) :249-262
[4]   TEMPERATURE-DEPENDENT METHANOL ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RU ALLOYS [J].
GASTEIGER, HA ;
MARKOVIC, N ;
ROSS, PN ;
CAIRNS, EJ .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1994, 141 (07) :1795-1803
[5]   BIMETALLIC CARBON SUPPORTED ANODES FOR THE DIRECT METHANOL AIR FUEL-CELL [J].
HAMNETT, A ;
KENNEDY, BJ .
ELECTROCHIMICA ACTA, 1988, 33 (11) :1613-1618
[6]   ELECTROCHEMISTRY OF METHANOL AT LOW-INDEX CRYSTAL PLANES OF PLATINUM - AN INTEGRATED VOLTAMMETRIC AND CHRONOAMPEROMETRIC STUDY [J].
HERRERO, E ;
FRANASZCZUK, K ;
WIECKOWSKI, A .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (19) :5074-5083
[7]  
Hogarth MP, 2002, PLATIN MET REV, V46, P146
[8]   Current-time behavior of smooth and porous PtRu surfaces for methanol oxidation [J].
Hoster, H ;
Iwasita, T ;
Baumgärtner, H ;
Vielstich, W .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (05) :A496-A501
[9]   Electrocatalysis of methanol oxidation [J].
Iwasita, T .
ELECTROCHIMICA ACTA, 2002, 47 (22-23) :3663-3674
[10]   Electrooxidation of small organic molecules on mesoporous precious metal catalysts II: CO and methanol on platinum-ruthenium alloy [J].
Jiang, JH ;
Kucernak, A .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2003, 543 (02) :187-199