An AlCl3 based ionic liquid with a neutral substituted pyridine ligand for electrochemical deposition of aluminum

Youxing Fang, Kazuki Yoshii, Xueguang Jiang, Xiao Guang Sun, Tetsuya Tsuda, Nada Mehio, Sheng Dai

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

A new ionic liquid (IL) based on a "neutral" ligand, 4-propylpyridine, is obtained via complexation with AlCl3. It is found that the asymmetric cleavage of AlCl3 generates AlCl2+ and AlCl4-, and the former is coordinated by 4-propylpyridine to produce the Al-containing cations ([AlCl2(4-Pr-Py)2]+). The AlCl3/4-propylpyridine IL with a molar ratio of 1.3/1 is highly fluidic with a viscosity of 42.8 mPa s and an ionic conductivity of 5.0 × 10-4 S/cm at room temperature. In contrast to conventional ILs for electroplating aluminum in which the electrochemically active species are Al-containing anions (for example Al2Cl7-), this new IL has an Al-containing cation as the electroactive species, which is beneficial to electrodeposition of aluminum.

Original languageEnglish
Pages (from-to)82-88
Number of pages7
JournalElectrochimica Acta
Volume160
DOIs
Publication statusPublished - 2015 Apr 1
Externally publishedYes

Fingerprint

Ionic Liquids
Aluminum
Ionic liquids
Pyridine
Ligands
Cations
Positive ions
Fluidics
Electroplating
Ionic conductivity
Complexation
Electrodeposition
Anions
Negative ions
Viscosity
aluminum chloride
pyridine
4-propylpyridine
Temperature

Keywords

  • Al electroplating
  • Al-containing cations
  • Al-containing ionic liquid
  • neutral ligand

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

An AlCl3 based ionic liquid with a neutral substituted pyridine ligand for electrochemical deposition of aluminum. / Fang, Youxing; Yoshii, Kazuki; Jiang, Xueguang; Sun, Xiao Guang; Tsuda, Tetsuya; Mehio, Nada; Dai, Sheng.

In: Electrochimica Acta, Vol. 160, 01.04.2015, p. 82-88.

Research output: Contribution to journalArticle

Fang, Youxing ; Yoshii, Kazuki ; Jiang, Xueguang ; Sun, Xiao Guang ; Tsuda, Tetsuya ; Mehio, Nada ; Dai, Sheng. / An AlCl3 based ionic liquid with a neutral substituted pyridine ligand for electrochemical deposition of aluminum. In: Electrochimica Acta. 2015 ; Vol. 160. pp. 82-88.
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T1 - An AlCl3 based ionic liquid with a neutral substituted pyridine ligand for electrochemical deposition of aluminum

AU - Fang, Youxing

AU - Yoshii, Kazuki

AU - Jiang, Xueguang

AU - Sun, Xiao Guang

AU - Tsuda, Tetsuya

AU - Mehio, Nada

AU - Dai, Sheng

PY - 2015/4/1

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N2 - A new ionic liquid (IL) based on a "neutral" ligand, 4-propylpyridine, is obtained via complexation with AlCl3. It is found that the asymmetric cleavage of AlCl3 generates AlCl2+ and AlCl4-, and the former is coordinated by 4-propylpyridine to produce the Al-containing cations ([AlCl2(4-Pr-Py)2]+). The AlCl3/4-propylpyridine IL with a molar ratio of 1.3/1 is highly fluidic with a viscosity of 42.8 mPa s and an ionic conductivity of 5.0 × 10-4 S/cm at room temperature. In contrast to conventional ILs for electroplating aluminum in which the electrochemically active species are Al-containing anions (for example Al2Cl7-), this new IL has an Al-containing cation as the electroactive species, which is beneficial to electrodeposition of aluminum.

AB - A new ionic liquid (IL) based on a "neutral" ligand, 4-propylpyridine, is obtained via complexation with AlCl3. It is found that the asymmetric cleavage of AlCl3 generates AlCl2+ and AlCl4-, and the former is coordinated by 4-propylpyridine to produce the Al-containing cations ([AlCl2(4-Pr-Py)2]+). The AlCl3/4-propylpyridine IL with a molar ratio of 1.3/1 is highly fluidic with a viscosity of 42.8 mPa s and an ionic conductivity of 5.0 × 10-4 S/cm at room temperature. In contrast to conventional ILs for electroplating aluminum in which the electrochemically active species are Al-containing anions (for example Al2Cl7-), this new IL has an Al-containing cation as the electroactive species, which is beneficial to electrodeposition of aluminum.

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