Changes of the interfacial stress with electrode potential in the Ru|0.1 M perchloric acid system

M. Újvári, Soma Vesztergom, Csanád B. Pénzes, G. Láng

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Electrochemical and mechanical properties of ruthenium films electrodeposited on gold have been investigated in aqueous perchloric acid solutions. Cyclic voltammograms recorded at slow sweep rates in rotating disk experiments were highly asymmetric with respect to the electrode potential axis, and a negative current could be observed even during the positive sweep. Changes of the interfacial stress were measured by the bending beam method as functions of the electrode potential and of the concentration of chloride ions. The results are consistent with the earlier observation that perchlorate ions can be electrochemically reduced to Cl- on ruthenium. The resulting chloride ions decrease the interfacial stress and exert an inhibiting effect on the reduction process indicating the role of competitive adsorption. The desorption rate of Cl- is significantly influenced by the hydrodynamic conditions, probably through desorption/diffusion coupling.

Original languageEnglish
Pages (from-to)111-113
Number of pages3
JournalElectrochemistry Communications
Volume28
DOIs
Publication statusPublished - Mar 2013

Fingerprint

Ruthenium
Chlorides
Desorption
Ions
Electrodes
Acids
Rotating disks
Electrochemical properties
Gold
Hydrodynamics
Adsorption
Mechanical properties
Experiments
Perchloric Acid
perchlorate

Keywords

  • Bending beam method
  • Cantilever
  • Chloride adsorption
  • Interfacial stress
  • Perchlorate reduction

ASJC Scopus subject areas

  • Electrochemistry

Cite this

Changes of the interfacial stress with electrode potential in the Ru|0.1 M perchloric acid system. / Újvári, M.; Vesztergom, Soma; Pénzes, Csanád B.; Láng, G.

In: Electrochemistry Communications, Vol. 28, 03.2013, p. 111-113.

Research output: Contribution to journalArticle

@article{eeb5621a028a48fda7254e97f7711d4d,
title = "Changes of the interfacial stress with electrode potential in the Ru|0.1 M perchloric acid system",
abstract = "Electrochemical and mechanical properties of ruthenium films electrodeposited on gold have been investigated in aqueous perchloric acid solutions. Cyclic voltammograms recorded at slow sweep rates in rotating disk experiments were highly asymmetric with respect to the electrode potential axis, and a negative current could be observed even during the positive sweep. Changes of the interfacial stress were measured by the bending beam method as functions of the electrode potential and of the concentration of chloride ions. The results are consistent with the earlier observation that perchlorate ions can be electrochemically reduced to Cl- on ruthenium. The resulting chloride ions decrease the interfacial stress and exert an inhibiting effect on the reduction process indicating the role of competitive adsorption. The desorption rate of Cl- is significantly influenced by the hydrodynamic conditions, probably through desorption/diffusion coupling.",
keywords = "Bending beam method, Cantilever, Chloride adsorption, Interfacial stress, Perchlorate reduction",
author = "M. {\'U}jv{\'a}ri and Soma Vesztergom and P{\'e}nzes, {Csan{\'a}d B.} and G. L{\'a}ng",
year = "2013",
month = "3",
doi = "10.1016/j.elecom.2012.12.023",
language = "English",
volume = "28",
pages = "111--113",
journal = "Electrochemistry Communications",
issn = "1388-2481",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Changes of the interfacial stress with electrode potential in the Ru|0.1 M perchloric acid system

AU - Újvári, M.

AU - Vesztergom, Soma

AU - Pénzes, Csanád B.

AU - Láng, G.

PY - 2013/3

Y1 - 2013/3

N2 - Electrochemical and mechanical properties of ruthenium films electrodeposited on gold have been investigated in aqueous perchloric acid solutions. Cyclic voltammograms recorded at slow sweep rates in rotating disk experiments were highly asymmetric with respect to the electrode potential axis, and a negative current could be observed even during the positive sweep. Changes of the interfacial stress were measured by the bending beam method as functions of the electrode potential and of the concentration of chloride ions. The results are consistent with the earlier observation that perchlorate ions can be electrochemically reduced to Cl- on ruthenium. The resulting chloride ions decrease the interfacial stress and exert an inhibiting effect on the reduction process indicating the role of competitive adsorption. The desorption rate of Cl- is significantly influenced by the hydrodynamic conditions, probably through desorption/diffusion coupling.

AB - Electrochemical and mechanical properties of ruthenium films electrodeposited on gold have been investigated in aqueous perchloric acid solutions. Cyclic voltammograms recorded at slow sweep rates in rotating disk experiments were highly asymmetric with respect to the electrode potential axis, and a negative current could be observed even during the positive sweep. Changes of the interfacial stress were measured by the bending beam method as functions of the electrode potential and of the concentration of chloride ions. The results are consistent with the earlier observation that perchlorate ions can be electrochemically reduced to Cl- on ruthenium. The resulting chloride ions decrease the interfacial stress and exert an inhibiting effect on the reduction process indicating the role of competitive adsorption. The desorption rate of Cl- is significantly influenced by the hydrodynamic conditions, probably through desorption/diffusion coupling.

KW - Bending beam method

KW - Cantilever

KW - Chloride adsorption

KW - Interfacial stress

KW - Perchlorate reduction

UR - http://www.scopus.com/inward/record.url?scp=84872126601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872126601&partnerID=8YFLogxK

U2 - 10.1016/j.elecom.2012.12.023

DO - 10.1016/j.elecom.2012.12.023

M3 - Article

VL - 28

SP - 111

EP - 113

JO - Electrochemistry Communications

JF - Electrochemistry Communications

SN - 1388-2481

ER -