Growth of a Copper-Gold Alloy Phase by Bulk Copper Electrodeposition on Gold Investigated by In Situ STM

Jens E.T. Andersen, Per Moller

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Simultaneous in situ scanning tunneling microscopy measurements and recordings of voltammograms were used to study in real time the initial cycles of potentiostatic copper electrodeposition and subsequent dissolution on a clean gold polycrystalline electrode. The cycles were carried out by sweeping the potential in the double-layer charging region from 500 to —100 mV and back to 500 mV at a sweep rate of 1 mV/s in an acidified copper sulfate electrolyte (0.01M H2S04J 0.01M CuSO4l and Millipore water). After completion of the first cycle the gold surface had recrystallized and nuclei of an alloy phase were formed. After completion of subsequent cycles the distribution of crystallite dimensions and the shape of the crystallites changed and the growth was compared with features of concomitant voltammograms. Relations between charge densities and potentials were deduced from data of the voltammograms. A shift in peak potential for the anodic current transient from E = 20 mV to E = —2 mV was observed after completion of four subsequent cycles of copper electrodeposition/dissolution. The shift is suggested to be equal to the change in potential of the working electrode owing to the formation of the alloy phase.

Original languageEnglish
Pages (from-to)2225-2232
Number of pages8
JournalJournal of the Electrochemical Society
Volume142
Issue number7
DOIs
Publication statusPublished - Jan 1 1995

Fingerprint

Gold Alloys
Gold alloys
gold alloys
copper alloys
Copper alloys
Electrodeposition
electrodeposition
Gold
Copper
Dissolution
gold
Copper Sulfate
copper
cycles
Electrodes
Scanning tunneling microscopy
Charge density
Crystallites
Electrolytes
dissolving

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

Cite this

@article{401b3585e4b94031970e66f4ae5c8c48,
title = "Growth of a Copper-Gold Alloy Phase by Bulk Copper Electrodeposition on Gold Investigated by In Situ STM",
abstract = "Simultaneous in situ scanning tunneling microscopy measurements and recordings of voltammograms were used to study in real time the initial cycles of potentiostatic copper electrodeposition and subsequent dissolution on a clean gold polycrystalline electrode. The cycles were carried out by sweeping the potential in the double-layer charging region from 500 to —100 mV and back to 500 mV at a sweep rate of 1 mV/s in an acidified copper sulfate electrolyte (0.01M H2S04J 0.01M CuSO4l and Millipore water). After completion of the first cycle the gold surface had recrystallized and nuclei of an alloy phase were formed. After completion of subsequent cycles the distribution of crystallite dimensions and the shape of the crystallites changed and the growth was compared with features of concomitant voltammograms. Relations between charge densities and potentials were deduced from data of the voltammograms. A shift in peak potential for the anodic current transient from E = 20 mV to E = —2 mV was observed after completion of four subsequent cycles of copper electrodeposition/dissolution. The shift is suggested to be equal to the change in potential of the working electrode owing to the formation of the alloy phase.",
author = "Andersen, {Jens E.T.} and Per Moller",
year = "1995",
month = "1",
day = "1",
doi = "10.1149/1.2044279",
language = "English",
volume = "142",
pages = "2225--2232",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "7",

}

Growth of a Copper-Gold Alloy Phase by Bulk Copper Electrodeposition on Gold Investigated by In Situ STM. / Andersen, Jens E.T.; Moller, Per.

In: Journal of the Electrochemical Society, Vol. 142, No. 7, 01.01.1995, p. 2225-2232.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Growth of a Copper-Gold Alloy Phase by Bulk Copper Electrodeposition on Gold Investigated by In Situ STM

AU - Andersen, Jens E.T.

AU - Moller, Per

PY - 1995/1/1

Y1 - 1995/1/1

N2 - Simultaneous in situ scanning tunneling microscopy measurements and recordings of voltammograms were used to study in real time the initial cycles of potentiostatic copper electrodeposition and subsequent dissolution on a clean gold polycrystalline electrode. The cycles were carried out by sweeping the potential in the double-layer charging region from 500 to —100 mV and back to 500 mV at a sweep rate of 1 mV/s in an acidified copper sulfate electrolyte (0.01M H2S04J 0.01M CuSO4l and Millipore water). After completion of the first cycle the gold surface had recrystallized and nuclei of an alloy phase were formed. After completion of subsequent cycles the distribution of crystallite dimensions and the shape of the crystallites changed and the growth was compared with features of concomitant voltammograms. Relations between charge densities and potentials were deduced from data of the voltammograms. A shift in peak potential for the anodic current transient from E = 20 mV to E = —2 mV was observed after completion of four subsequent cycles of copper electrodeposition/dissolution. The shift is suggested to be equal to the change in potential of the working electrode owing to the formation of the alloy phase.

AB - Simultaneous in situ scanning tunneling microscopy measurements and recordings of voltammograms were used to study in real time the initial cycles of potentiostatic copper electrodeposition and subsequent dissolution on a clean gold polycrystalline electrode. The cycles were carried out by sweeping the potential in the double-layer charging region from 500 to —100 mV and back to 500 mV at a sweep rate of 1 mV/s in an acidified copper sulfate electrolyte (0.01M H2S04J 0.01M CuSO4l and Millipore water). After completion of the first cycle the gold surface had recrystallized and nuclei of an alloy phase were formed. After completion of subsequent cycles the distribution of crystallite dimensions and the shape of the crystallites changed and the growth was compared with features of concomitant voltammograms. Relations between charge densities and potentials were deduced from data of the voltammograms. A shift in peak potential for the anodic current transient from E = 20 mV to E = —2 mV was observed after completion of four subsequent cycles of copper electrodeposition/dissolution. The shift is suggested to be equal to the change in potential of the working electrode owing to the formation of the alloy phase.

UR - http://www.scopus.com/inward/record.url?scp=0029343012&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029343012&partnerID=8YFLogxK

U2 - 10.1149/1.2044279

DO - 10.1149/1.2044279

M3 - Article

AN - SCOPUS:0029343012

VL - 142

SP - 2225

EP - 2232

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 7

ER -