Investigating the electrochemical windows of ionic liquids

Maan Hayyan; Farouq S. Mjalli; Mohd Ali Hashim; Inas M. AlNashef; Tan Xue Mei

doi:10.1016/j.jiec.2012.07.011

Investigating the electrochemical windows of ionic liquids

Maan Hayyan, Farouq S. Mjalli^*, Mohd Ali Hashim, Inas M. AlNashef, Tan Xue Mei

^*Corresponding author for this work

Petroleum and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

206 Citations (Scopus)

Abstract

The structure effect on the electrochemical windows (EWs) was studied using cyclic voltammetry (CV) in 16 ionic liquids (ILs), consisting of various cations such as piperidinium, pyridinium, pyrrolidinium, phosphonium, morpholinium, ammonium, sulfonium and imidazolium, and anions including bis(trifluoromethylsulfonyl)imide, tris(pentafluoroethyl)trifluorophosphate, dicyanamide, trifluoroacetate and trifluoromethanesulfonate. It was found that all studied ILs have good EWs to be utilized as electrolytes in different electrochemical applications pertaining to industry. Furthermore, it was found that the structure of ILs affected the EW and both the cation and anion have important effect on the reductive and oxidative limits, respectively. The reductive limits of the studied ILs were found to follow the sequence of [P14,666]⁺>[N112,1O2]⁺>[HMPyrr]⁺>[BMPyrr]⁺>[EMIm]⁺>[MOEMMor]⁺≈[MOPMPip]⁺>[S222]⁺>[BMPy]⁺≈[HPy]⁺≈[HPPy]⁺. The oxidative limits were found to follow the sequence of [TFSI]^->[TPTP]^->[TfO]^->[DCA]^->[TFA]^-.

Original language	English
Pages (from-to)	106-112
Number of pages	7
Journal	Journal of Industrial and Engineering Chemistry
Volume	19
Issue number	1
DOIs	https://doi.org/10.1016/j.jiec.2012.07.011
Publication status	Published - Jan 25 2013

Keywords

Ag/AgCl electrode
Cut-off current
Cyclic voltammetry
Electrochemical window
Glassy carbon macro-electrode
Ionic liquid

ASJC Scopus subject areas

Chemical Engineering(all)

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10.1016/j.jiec.2012.07.011

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title = "Investigating the electrochemical windows of ionic liquids",

abstract = "The structure effect on the electrochemical windows (EWs) was studied using cyclic voltammetry (CV) in 16 ionic liquids (ILs), consisting of various cations such as piperidinium, pyridinium, pyrrolidinium, phosphonium, morpholinium, ammonium, sulfonium and imidazolium, and anions including bis(trifluoromethylsulfonyl)imide, tris(pentafluoroethyl)trifluorophosphate, dicyanamide, trifluoroacetate and trifluoromethanesulfonate. It was found that all studied ILs have good EWs to be utilized as electrolytes in different electrochemical applications pertaining to industry. Furthermore, it was found that the structure of ILs affected the EW and both the cation and anion have important effect on the reductive and oxidative limits, respectively. The reductive limits of the studied ILs were found to follow the sequence of [P14,666]+>[N112,1O2]+>[HMPyrr]+>[BMPyrr]+>[EMIm]+>[MOEMMor]+≈[MOPMPip]+>[S222]+>[BMPy]+≈[HPy]+≈[HPPy]+. The oxidative limits were found to follow the sequence of [TFSI]->[TPTP]->[TfO]->[DCA]->[TFA]-.",

keywords = "Ag/AgCl electrode, Cut-off current, Cyclic voltammetry, Electrochemical window, Glassy carbon macro-electrode, Ionic liquid",

author = "Maan Hayyan and Mjalli, {Farouq S.} and Hashim, {Mohd Ali} and AlNashef, {Inas M.} and Mei, {Tan Xue}",

year = "2013",

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doi = "10.1016/j.jiec.2012.07.011",

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T1 - Investigating the electrochemical windows of ionic liquids

AU - Hayyan, Maan

AU - Mjalli, Farouq S.

AU - Hashim, Mohd Ali

AU - AlNashef, Inas M.

AU - Mei, Tan Xue

PY - 2013/1/25

Y1 - 2013/1/25

N2 - The structure effect on the electrochemical windows (EWs) was studied using cyclic voltammetry (CV) in 16 ionic liquids (ILs), consisting of various cations such as piperidinium, pyridinium, pyrrolidinium, phosphonium, morpholinium, ammonium, sulfonium and imidazolium, and anions including bis(trifluoromethylsulfonyl)imide, tris(pentafluoroethyl)trifluorophosphate, dicyanamide, trifluoroacetate and trifluoromethanesulfonate. It was found that all studied ILs have good EWs to be utilized as electrolytes in different electrochemical applications pertaining to industry. Furthermore, it was found that the structure of ILs affected the EW and both the cation and anion have important effect on the reductive and oxidative limits, respectively. The reductive limits of the studied ILs were found to follow the sequence of [P14,666]+>[N112,1O2]+>[HMPyrr]+>[BMPyrr]+>[EMIm]+>[MOEMMor]+≈[MOPMPip]+>[S222]+>[BMPy]+≈[HPy]+≈[HPPy]+. The oxidative limits were found to follow the sequence of [TFSI]->[TPTP]->[TfO]->[DCA]->[TFA]-.

AB - The structure effect on the electrochemical windows (EWs) was studied using cyclic voltammetry (CV) in 16 ionic liquids (ILs), consisting of various cations such as piperidinium, pyridinium, pyrrolidinium, phosphonium, morpholinium, ammonium, sulfonium and imidazolium, and anions including bis(trifluoromethylsulfonyl)imide, tris(pentafluoroethyl)trifluorophosphate, dicyanamide, trifluoroacetate and trifluoromethanesulfonate. It was found that all studied ILs have good EWs to be utilized as electrolytes in different electrochemical applications pertaining to industry. Furthermore, it was found that the structure of ILs affected the EW and both the cation and anion have important effect on the reductive and oxidative limits, respectively. The reductive limits of the studied ILs were found to follow the sequence of [P14,666]+>[N112,1O2]+>[HMPyrr]+>[BMPyrr]+>[EMIm]+>[MOEMMor]+≈[MOPMPip]+>[S222]+>[BMPy]+≈[HPy]+≈[HPPy]+. The oxidative limits were found to follow the sequence of [TFSI]->[TPTP]->[TfO]->[DCA]->[TFA]-.

KW - Ag/AgCl electrode

KW - Cut-off current

KW - Cyclic voltammetry

KW - Electrochemical window

KW - Glassy carbon macro-electrode

KW - Ionic liquid

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Investigating the electrochemical windows of ionic liquids

Abstract

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