Ethanol electro-oxidation: Cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic oscillation

被引：28

作者：

Han, Lijuan ^{[1
]}

Ju, Hua ^{[2
]}

Xu, Yanhui ^{[1
]}

机构：

[1] Soochow Univ, Inst Chem Power Sources, Suzhou 215006, Peoples R China

[2] Soochow Univ, Sch Urban Rail Transportat, Suzhou 215006, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 20期

关键词：

Galvanostatic oscillation; Negative real impedance; Cyclic voltammetry; Ethanol electro-oxidation; OXIDATION; CATALYSTS; METHANOL; PLATINUM; ELECTRODES; MECHANISM; KINETICS;

D O I：

10.1016/j.ijhydene.2012.08.034

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：

In the present work, ethanol electro-oxidation reaction on Pt electrode has been studied in details by measuring and analyzing the cyclic voltammetries (CV), the dependence of the electrochemical impedance spectroscopies (EIS) on the applied potentials and the galvanostatic potential oscillation. The CV measurement has exhibited a bistable characteristic. The origin of all the oxidation and reduction peaks has been analyzed. The origin of the bistable characteristic has also been studied by measuring the EIS at different potentials. In addition, the dependence of the galvanostatic oscillation on the applied potential and the ethanol concentration has been reported. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：15156 / 15163

页数：8

共 33 条

[1] Electro-oxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction [J].

Brandalise, M. ;

Verjulio-Silva, R. W. R. ;

Tusi, M. M. ;

Correa, O. V. ;

Farias, L. A. ;

Linardi, M. ;

Spinace, E. V. ;

Oliveira Neto, A. .

IONICS, 2009, 15 (06) :743-747

[2] Bistability and excitability in the electrochemical oxidation of ethanol [J].

Chen, SL ;

Schell, M .

ELECTROCHIMICA ACTA, 1999, 44 (26) :4773-4780

[3] Review of different methods for developing nanoelectrocatalysts for the oxidation of organic compounds [J].

Coutanceau, C. ;

Brimaud, S. ;

Lamy, C. ;

Leger, J. -M. ;

Dubau, L. ;

Rousseau, S. ;

Vigier, F. .

ELECTROCHIMICA ACTA, 2008, 53 (23) :6865-6880

[4] New experimental evidence on the formation of platinum superactive sites in an electrochemical environment [J].

Diaz, V. ;

Real, S. ;

Teliz, E. ;

Zinola, C. F. ;

Martins, M. E. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (08) :3519-3530

[5] OSCILLATORY KINETICS AND SPATIOTEMPORAL SELF-ORGANIZATION IN REACTIONS AT SOLID-SURFACES [J].

ERTL, G .

SCIENCE, 1991, 254 (5039) :1750-1755

[6] Ethanol oxidation on PtRu electrodes studied by differential electrochemical mass spectrometry [J].

Fujiwara, N ;

Friedrich, KA ;

Stimming, U .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 472 (02) :120-125

[7]

Garcia BL, 2007, REV DIRECT METHANOL, V40, pP229

[8] Ethanol oxidation on PtRuMo/C catalysts: In situ FTIR spectroscopy and DEMS studies [J].

Garcia, Gonzalo ;

Tsiouvaras, Nikolaos ;

Pastor, Elena ;

Pena, Miguel A. ;

Fierro, Jose Luis G. ;

Martinez-Huerta, Maria V. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (08) :7131-7140

[9]

Gonzalez A. S., 2012, INT J HYDROGEN ENERG, V37, P1752

[10]

Gyenge E., 2008, ELECTROCATALYTIC OXI, pP165

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