Analysis of the impedance spectra of Pt|poly(o-phenylenediamine) electrodes - Hydrogen adsorption and the brush model of the polymer films

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Electrochemical impedance spectra obtained for poly(o-phenylenediamine) films on platinum in contact with 0.5 M H2SO4 solution were analyzed on the basis of the brush model elaborated for conducting polymer films on electrodes. It is assumed that the polymer film consists of short and long polymer chains forming bundles in such a way that only a small part of the metal substrate is covered by the polymeric material. The analysis of the impedance spectra taken at several potentials in the region of hydrogen adsorption on platinum supports the validity of the model. The model has been tested also by varying the film thickness and the roughness of the platinum substrate.

Original languageEnglish
Pages (from-to)283-297
Number of pages15
JournalJournal of Electroanalytical Chemistry
Volume572
Issue number2
DOIs
Publication statusPublished - Nov 1 2004

Fingerprint

Brushes
Platinum
Polymer films
Hydrogen
Adsorption
Electrodes
Conducting polymers
Polymers
Substrates
Contacts (fluid mechanics)
Film thickness
Surface roughness
Metals
poly(o-phenylenediamine)

Keywords

  • Brush model
  • Electrochemical impedance spectroscopy
  • Hydrogen adsorption
  • Platinum
  • Poly(o-phenylenediamine)

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

@article{c4be16bd17704152b7d8fd40157a86ee,
title = "Analysis of the impedance spectra of Pt|poly(o-phenylenediamine) electrodes - Hydrogen adsorption and the brush model of the polymer films",
abstract = "Electrochemical impedance spectra obtained for poly(o-phenylenediamine) films on platinum in contact with 0.5 M H2SO4 solution were analyzed on the basis of the brush model elaborated for conducting polymer films on electrodes. It is assumed that the polymer film consists of short and long polymer chains forming bundles in such a way that only a small part of the metal substrate is covered by the polymeric material. The analysis of the impedance spectra taken at several potentials in the region of hydrogen adsorption on platinum supports the validity of the model. The model has been tested also by varying the film thickness and the roughness of the platinum substrate.",
keywords = "Brush model, Electrochemical impedance spectroscopy, Hydrogen adsorption, Platinum, Poly(o-phenylenediamine)",
author = "G. L{\'a}ng and M. {\'U}jv{\'a}ri and G. Inzelt",
year = "2004",
month = "11",
day = "1",
doi = "10.1016/j.jelechem.2003.11.052",
language = "English",
volume = "572",
pages = "283--297",
journal = "Journal of Electroanalytical Chemistry",
issn = "0022-0728",
publisher = "Elsevier Sequoia",
number = "2",

}

TY - JOUR

T1 - Analysis of the impedance spectra of Pt|poly(o-phenylenediamine) electrodes - Hydrogen adsorption and the brush model of the polymer films

AU - Láng, G.

AU - Újvári, M.

AU - Inzelt, G.

PY - 2004/11/1

Y1 - 2004/11/1

N2 - Electrochemical impedance spectra obtained for poly(o-phenylenediamine) films on platinum in contact with 0.5 M H2SO4 solution were analyzed on the basis of the brush model elaborated for conducting polymer films on electrodes. It is assumed that the polymer film consists of short and long polymer chains forming bundles in such a way that only a small part of the metal substrate is covered by the polymeric material. The analysis of the impedance spectra taken at several potentials in the region of hydrogen adsorption on platinum supports the validity of the model. The model has been tested also by varying the film thickness and the roughness of the platinum substrate.

AB - Electrochemical impedance spectra obtained for poly(o-phenylenediamine) films on platinum in contact with 0.5 M H2SO4 solution were analyzed on the basis of the brush model elaborated for conducting polymer films on electrodes. It is assumed that the polymer film consists of short and long polymer chains forming bundles in such a way that only a small part of the metal substrate is covered by the polymeric material. The analysis of the impedance spectra taken at several potentials in the region of hydrogen adsorption on platinum supports the validity of the model. The model has been tested also by varying the film thickness and the roughness of the platinum substrate.

KW - Brush model

KW - Electrochemical impedance spectroscopy

KW - Hydrogen adsorption

KW - Platinum

KW - Poly(o-phenylenediamine)

UR - http://www.scopus.com/inward/record.url?scp=4944240291&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4944240291&partnerID=8YFLogxK

U2 - 10.1016/j.jelechem.2003.11.052

DO - 10.1016/j.jelechem.2003.11.052

M3 - Article

VL - 572

SP - 283

EP - 297

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 0022-0728

IS - 2

ER -