Underpotential deposition of aluminum and alloy formation on polycrystalline gold electrodes from AlCl3/EMIC room-temperature molten salts

Jae Joon Lee, In Tae Bae, Daniel Alberto Scherson, Barry Miller, Kraig A. Wheeler

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Interfacial processes occurring at polycrystalline gold in acidic 1-ethyl-3-methylimidazolium chloroaluminate melts at room temperature, at potentials more positive than aluminium bulk deposition, include both Al underpotential deposition and the formation of Al/Au alloys. This information complements that reported in the literature for Al electrodeposition on Au in AlCl3/NaCl melts at temperatures of 200°C and higher. Cyclic voltammetry and chronopotentiometry suggest that at least two alloys form, and there is fast phase transformation between these intermetallic compounds at room temperature in the aluminum underpotential region. This transformation with thin gold films was slower than that in bulk gold electrodes.

Original languageEnglish
Pages (from-to)562-566
Number of pages5
JournalJournal of the Electrochemical Society
Volume147
Issue number2
DOIs
Publication statusPublished - 2000 Feb 1
Externally publishedYes

Fingerprint

Aluminum
Gold
Molten materials
Aluminum alloys
Salts
Electrodes
Electrodeposition
Temperature
Cyclic voltammetry
Intermetallics
Phase transitions
aluminum chloride

ASJC Scopus subject areas

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

Cite this

Underpotential deposition of aluminum and alloy formation on polycrystalline gold electrodes from AlCl3/EMIC room-temperature molten salts. / Lee, Jae Joon; Bae, In Tae; Scherson, Daniel Alberto; Miller, Barry; Wheeler, Kraig A.

In: Journal of the Electrochemical Society, Vol. 147, No. 2, 01.02.2000, p. 562-566.

Research output: Contribution to journalArticle

Lee, Jae Joon ; Bae, In Tae ; Scherson, Daniel Alberto ; Miller, Barry ; Wheeler, Kraig A. / Underpotential deposition of aluminum and alloy formation on polycrystalline gold electrodes from AlCl3/EMIC room-temperature molten salts. In: Journal of the Electrochemical Society. 2000 ; Vol. 147, No. 2. pp. 562-566.
@article{b6e0fb83b8114a6cbf34697d67dcf86b,
title = "Underpotential deposition of aluminum and alloy formation on polycrystalline gold electrodes from AlCl3/EMIC room-temperature molten salts",
abstract = "Interfacial processes occurring at polycrystalline gold in acidic 1-ethyl-3-methylimidazolium chloroaluminate melts at room temperature, at potentials more positive than aluminium bulk deposition, include both Al underpotential deposition and the formation of Al/Au alloys. This information complements that reported in the literature for Al electrodeposition on Au in AlCl3/NaCl melts at temperatures of 200°C and higher. Cyclic voltammetry and chronopotentiometry suggest that at least two alloys form, and there is fast phase transformation between these intermetallic compounds at room temperature in the aluminum underpotential region. This transformation with thin gold films was slower than that in bulk gold electrodes.",
author = "Lee, {Jae Joon} and Bae, {In Tae} and Scherson, {Daniel Alberto} and Barry Miller and Wheeler, {Kraig A.}",
year = "2000",
month = "2",
day = "1",
doi = "10.1149/1.1393233",
language = "English",
volume = "147",
pages = "562--566",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "2",

}

TY - JOUR

T1 - Underpotential deposition of aluminum and alloy formation on polycrystalline gold electrodes from AlCl3/EMIC room-temperature molten salts

AU - Lee, Jae Joon

AU - Bae, In Tae

AU - Scherson, Daniel Alberto

AU - Miller, Barry

AU - Wheeler, Kraig A.

PY - 2000/2/1

Y1 - 2000/2/1

N2 - Interfacial processes occurring at polycrystalline gold in acidic 1-ethyl-3-methylimidazolium chloroaluminate melts at room temperature, at potentials more positive than aluminium bulk deposition, include both Al underpotential deposition and the formation of Al/Au alloys. This information complements that reported in the literature for Al electrodeposition on Au in AlCl3/NaCl melts at temperatures of 200°C and higher. Cyclic voltammetry and chronopotentiometry suggest that at least two alloys form, and there is fast phase transformation between these intermetallic compounds at room temperature in the aluminum underpotential region. This transformation with thin gold films was slower than that in bulk gold electrodes.

AB - Interfacial processes occurring at polycrystalline gold in acidic 1-ethyl-3-methylimidazolium chloroaluminate melts at room temperature, at potentials more positive than aluminium bulk deposition, include both Al underpotential deposition and the formation of Al/Au alloys. This information complements that reported in the literature for Al electrodeposition on Au in AlCl3/NaCl melts at temperatures of 200°C and higher. Cyclic voltammetry and chronopotentiometry suggest that at least two alloys form, and there is fast phase transformation between these intermetallic compounds at room temperature in the aluminum underpotential region. This transformation with thin gold films was slower than that in bulk gold electrodes.

UR - http://www.scopus.com/inward/record.url?scp=0034140867&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034140867&partnerID=8YFLogxK

U2 - 10.1149/1.1393233

DO - 10.1149/1.1393233

M3 - Article

AN - SCOPUS:0034140867

VL - 147

SP - 562

EP - 566

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 2

ER -