Nanoparticles of Pt/HxMoO3 electrodeposited in poly (3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) as the electrocatalyst for methanol oxidation

被引：40

作者：

Kuo, Chung-Wen ^{[1
]}

Sivakumar, Chinnaiah ^{[2
]}

Wen, Ten-Chin ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan

[2] Cent Electrochem Res Inst, Electrod & Electrocatalysis Div, Karaikkudi 630006, Tamil Nadu, India

来源：

JOURNAL OF POWER SOURCES | 2008年 / 185卷 / 02期

关键词：

Pt/HxMoO3; PEDOT-PSS; XPS; SEM; Methanol oxidation;

D O I：

10.1016/j.jpowsour.2008.07.060

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：

Nanoparticles of platinum and hydrous molybdenum oxide (Pt/HxMoO3) were successfully electrodeposited onto poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT-PSS) film by chronocoulornetry (0.2 C). Various loadings of Pt/HxMoO3 particles onto the PEDOT-PSS electrode were achieved using the co-deposition technique. The existence of Pt/HxMoO3 particles was determined through characterization by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis. XPS results revealed that deposited Pt and molybdenum were metallic Pt and HxMoO3, respectively. XRD analysis showed a decrease of Pt crystalline facets for the incorporation of HxMoO3 into PEDOT-PSS-Pt. indicating a strong interaction between Pt and HxMoO(3). Scanning electron microscopy (SEM) results revealed a uniform dispersion of Pt/HxMoO3 particles, with the particle size of 70-90 nm, in the PEDOT-PSS matrix. The cyclic voltammetry study and chronopotentiometry measurements demonstrated that the PEDOT-PSS-Pt/HxMoO3 electrode had superior electrocatalytic activity of methanol oxidation with less CO poisoning. The presence of amorphous HxMoO3 particles on the Pt Surface minimized CO poisoning of methanol oxidation. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：807 / 814

页数：8

共 43 条

[1]

Aricò AS, 2001, FUEL CELLS, V1, P133

[2] Study of poly(3,4-ethylenedioxythiophene) films prepared in propylene carbonate solutions containing different lithium salts [J].

Blanchard, F ;

Carré, B ;

Bonhomme, F ;

Biensan, P ;

Pagès, H ;

Lemordant, D .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2004, 569 (02) :203-210

[3] Supported mixed metal nanoparticles as electrocatalysts in low temperature fuel cells [J].

Chan, KY ;

Ding, J ;

Ren, JW ;

Cheng, SA ;

Tsang, KY .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (04) :505-516

[4] Platinum Catalysts Prepared with Functional Carbon Nanotube Defects and Its Improved Catalytic Performance for Methanol Oxidation [J].

Chen, JH ;

Wang, MY ;

Liu, B ;

Fan, Z ;

Cui, KZ ;

Kuang, Y .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (24) :11775-11779

[5] Nano-composite of PtRu alloy electrocatalyst and electronically conducting polymer for use as the anode in a direct methanol fuel cell [J].

Choi, JH ;

Park, KW ;

Lee, HK ;

Kim, YM ;

Lee, JS ;

Sung, YE .

ELECTROCHIMICA ACTA, 2003, 48 (19) :2781-2789

[6] Silver ions adsorbed to self-assembled monolayers of alkanedithiols on gold surfaces form Ag-dithiol-Au multilayer structures [J].

Deng, W ;

Yang, L ;

Fujita, D ;

Nejoh, H ;

Bai, C .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2000, 71 (06) :639-642

[7] New composite DMFC anode with PEDOT as a mixed conductor and catalyst support [J].

Drillet, J. -F. ;

Dittmeyer, R. ;

Juettner, K. ;

Li, L. ;

Mangold, K. -M. .

FUEL CELLS, 2006, 6 (06) :432-438

[8]

Ghosh S, 1999, ADV MATER, V11, P1214, DOI 10.1002/(SICI)1521-4095(199910)11:14<1214::AID-ADMA1214>3.0.CO

[9]

2-3

[10] Electrocatalytic oxidation of methanol on (Pb) lead modified by Pt, Pt-Ru and Pt-Sn microparticles dispersed into poly(o-phenylenediamine) film [J].

Golikand, AN ;

Golabi, SM ;

Maragheh, MG ;

Irannejad, L .

JOURNAL OF POWER SOURCES, 2005, 145 (02) :116-123

← 1 2 3 4 5 →