Enhanced stability and activity of PtRu nanotubes for methanol electrooxidation

被引：29

作者：

Garbarino, S. ^{[1
]}

Ponrouch, A. ^{[1
]}

Pronovost, S. ^{[1
]}

Guay, D. ^{[1
]}

机构：

[1] INRS Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Methanol; PtRu; Nanotube; Electrocatalysts; Electrooxidation; FUEL-CELL; SURFACE-STRUCTURE; CARBON-MONOXIDE; RU ALLOYS; OXIDATION; PLATINUM; ELECTRODES; ELECTROCATALYSTS; PERFORMANCE; BEHAVIOR;

D O I：

10.1016/j.elecom.2009.05.028

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

PtRu 1D nanostructures on titanium are prepared and analysed as electrocatalysts for methanol electro-oxidation. The morphology and composition of the 1D nanostructure are characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The electrocatalytic properties of such catalysts for methanol oxidation are investigated by cyclic voltammetry (CV) and chronoamperometry (CA) in 1.0 M CH3OH + 0.5 M H2SO4 aqueous solution. The results show that Pt46Ru54 nanotubes yields to a five-fold improvement of the mass specific activity and to a three-fold improvement of the long-term poisoning rate as compared to PtRu black of similar composition. Crown Copyright (c) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：1449 / 1452

页数：4

共 21 条

[1] Performance of DMFC anodes with ultra-low Pt loading [J].

Aricò, AS ;

Baglio, V ;

Modica, E ;

Di Blasi, A ;

Antonucci, V .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (02) :164-169

[2] Supportless Pt and PtPd nanotubes as electrocatalysts for oxygen-reduction reactions [J].

Chen, Zhongwei ;

Waje, Mahesh ;

Li, Wenzhen ;

Yan, Yushan .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (22) :4060-4063

[3] Methanol electro-oxidation on unsupported Pt-Ru alloys at different temperatures [J].

Chu, D ;

Gilman, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (05) :1685-1690

[4] METHANOL ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RN ALLOYS [J].

GASTEIGER, HA ;

MARKOVIC, N ;

ROSS, PN ;

CAIRNS, EJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (46) :12020-12029

[5] 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

[6] Determination of the platinum and ruthenium surface areas in platinum-ruthenium electrocatalysts by underpotential deposition of copper. 2. Effect of surface composition on activity [J].

Green, CL ;

Kucernak, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (44) :11446-11456

[7] REVERSIBILITY AND GROWTH-BEHAVIOR OF SURFACE OXIDE-FILMS AT RUTHENIUM ELECTRODES [J].

HADZIJORDANOV, S ;

ANGERSTEINKOZLOWSKA, H ;

VUKOVIC, M ;

CONWAY, BE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1978, 125 (09) :1471-1480

[8] Pt-Ru model catalysts for anodic methanol oxidation:: Influence of structure and composition on the reactivity [J].

Hoster, H ;

Iwasita, T ;

Baumgärtner, H ;

Vielstich, W .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (03) :337-346

[9] 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

[10] Methanol oxidation on PtRu electrodes. Influence of surface structure and Pt-Ru atom distribution [J].

Iwasita, T ;

Hoster, H ;

John-Anacker, A ;

Lin, WF ;

Vielstich, W .

LANGMUIR, 2000, 16 (02) :522-529

← 1 2 3 →