Methanol oxidation on carbon-supported Pt-Os bimetallic nanoparticle electrocatalysts

被引：49

作者：

Huang, JJ ^{[1
]}

Yang, H

Huang, QH

Tang, YW

Lu, TH

Akins, DL

机构：

[1] Nanjing Normal Univ, Dept Chem, Nanjing 210097, Peoples R China

[2] CUNY City Coll, Ctr Anal Struct & Interfaces, New York, NY 10031 USA

[3] CUNY City Coll, Dept Chem, New York, NY 10031 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2004年 / 151卷 / 11期

关键词：

D O I：

10.1149/1.1804257

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrocatalytic oxidation of methanol on carbon-supported bimetallic Pt-Os nanoparticle catalysts has been investigated. The as-prepared Pt-Os nanoparticles, which are single-phase disordered structures and well dispersed on the surface of carbon with a narrow size distribution, exhibit, respectively, significantly enhanced and slightly enhanced activities for methanol oxidation when compared to commercial Pt/C and Pt-Ru (1:1)/C catalysts. The maximum activity of our Pt-Os based catalysts for methanol oxidation was at a Pt/Os atomic ratio of 3:1. Such an enhanced activity can be rationalized by a combination of a bifunctional mechanism and an electronic effect.

引用

页码：A1810 / A1815

页数：6

共 48 条

[1] X-RAY PHOTOELECTRON-SPECTROSCOPY OF ADSORBED OXYGEN AND CARBONACEOUS SPECIES ON PLATINUM-ELECTRODES [J].

ALLEN, GC ;

TUCKER, PM ;

CAPON, A ;

PARSONS, R .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1974, 50 (03) :335-343

[2]

Aricò AS, 2001, FUEL CELLS, V1, P133

[3] An XPS study on oxidation states of Pt and its alloys with Co and Cr and its relevance to electroreduction of oxygen [J].

Aricò, AS ;

Shukla, AK ;

Kim, H ;

Park, S ;

Min, M ;

Antonucci, V .

APPLIED SURFACE SCIENCE, 2001, 172 (1-2) :33-40

[4] INVESTIGATION OF A CARBON-SUPPORTED QUATERNARY PT-RU-SN-W CATALYST FOR DIRECT METHANOL FUEL-CELLS [J].

ARICO, AS ;

POLTARZEWSKI, Z ;

KIM, H ;

MORANA, A ;

GIORDANO, N ;

ANTONUCCI, V .

JOURNAL OF POWER SOURCES, 1995, 55 (02) :159-166

[5]

BONNEMANN H, 1998, ANGEW CHEM INT EDIT, V30, P1313

[6] Structural and electrochemical studies of Pt-Sn nanoparticulate catalysts [J].

Boucher, AC ;

Alonso-Vante, N ;

Dassenoy, F ;

Vogel, W .

LANGMUIR, 2003, 19 (26) :10885-10891

[7]

Chen KY, 2000, ELECTROCHEM SOLID ST, V3, P10, DOI 10.1149/1.1390943

[8] Surface structure effects in platinum/ruthenium methanol oxidation electrocatalysis [J].

Chrzanowski, W ;

Wieckowski, A .

LANGMUIR, 1998, 14 (08) :1967-1970

[9] Examination of Pt(111)/Ru and Pt(111)/Os surfaces: STM imaging and methanol oxidation activity [J].

Crown, A ;

Moraes, IR ;

Wieckowski, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 500 (1-2) :333-343

[10] 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

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