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

doi:10.1016/j.electacta.2015.02.020

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 journal › Article › peer-review

108 Scopus citations

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 language	English
Pages (from-to)	82-88
Number of pages	7
Journal	Electrochimica Acta
Volume	160
DOIs	https://doi.org/10.1016/j.electacta.2015.02.020
State	Published - Apr 1 2015

Funding

This work was funded by the Strategic Environmental research and Development Program (SERDP) ( WP2316 ).

Funders	Funder number
Strategic Environmental Research and Development Program	WP2316

Keywords

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

Access to Document

10.1016/j.electacta.2015.02.020

Cite this

@article{0a1b5ece0fbc4054b17b22491618e13a,

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

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.",

keywords = "Al electroplating, Al-containing cations, Al-containing ionic liquid, neutral ligand",

author = "Youxing Fang and Kazuki Yoshii and Xueguang Jiang and Sun, {Xiao Guang} and Tetsuya Tsuda and Nada Mehio and Sheng Dai",

year = "2015",

month = apr,

day = "1",

doi = "10.1016/j.electacta.2015.02.020",

language = "English",

volume = "160",

pages = "82--88",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier",

}

TY - JOUR

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

Y1 - 2015/4/1

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.

KW - Al electroplating

KW - Al-containing cations

KW - Al-containing ionic liquid

KW - neutral ligand

UR - http://www.scopus.com/inward/record.url?scp=84922888380&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2015.02.020

DO - 10.1016/j.electacta.2015.02.020

M3 - Article

AN - SCOPUS:84922888380

SN - 0013-4686

VL - 160

SP - 82

EP - 88

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -