Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors

S. Pohlmann; T. Olyschlaeger; P. Goodrich; J. Alvarez Vicente; J. Jacquemin; A. Balducci

doi:10.1016/j.jpowsour.2014.09.167

Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors

S. Pohlmann, T. Olyschlaeger, P. Goodrich, J. Alvarez Vicente, J. Jacquemin^*, A. Balducci

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

66 Citations (Scopus)

Abstract

This work provides a first-time-study of Azepanium-based ionic liquids (ILs) as electrolyte components for electrochemical double layer capacitors (EDLCs). Herein, two Azepanium-based ILs, namely N-methyl, N-butyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(14)TFSI) and N-methyl, N-hexyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(16)TFSI) were compared with the established IL N-butyl, N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI) in terms of viscosity, conductivity, thermal stability and electrochemical behavior in EDLC systems. The ILs' operative potentials were found to be comparable, leading to operative voltages up to 3.5 V without significant electrolyte degradation.

Original language	English
Pages (from-to)	931-936
Number of pages	6
Journal	Journal of Power Sources
Volume	273
Early online date	02 Oct 2014
DOIs	https://doi.org/10.1016/j.jpowsour.2014.09.167
Publication status	Published - 01 Jan 2015

Keywords

Ionic liquids
Azepanium
Supercapacitors
High voltage
PHYSICOCHEMICAL PROPERTIES
CARBON
CAPACITORS
ENERGY
PERFORMANCE
STORAGE

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10.1016/j.jpowsour.2014.09.167

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@article{dfaa3714637e4303b39184972e692108,

title = "Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors",

abstract = "This work provides a first-time-study of Azepanium-based ionic liquids (ILs) as electrolyte components for electrochemical double layer capacitors (EDLCs). Herein, two Azepanium-based ILs, namely N-methyl, N-butyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(14)TFSI) and N-methyl, N-hexyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(16)TFSI) were compared with the established IL N-butyl, N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI) in terms of viscosity, conductivity, thermal stability and electrochemical behavior in EDLC systems. The ILs' operative potentials were found to be comparable, leading to operative voltages up to 3.5 V without significant electrolyte degradation. ",

keywords = "Ionic liquids, Azepanium, Supercapacitors, High voltage, PHYSICOCHEMICAL PROPERTIES, CARBON, CAPACITORS, ENERGY, PERFORMANCE, STORAGE",

author = "S. Pohlmann and T. Olyschlaeger and P. Goodrich and Vicente, {J. Alvarez} and J. Jacquemin and A. Balducci",

year = "2015",

month = jan,

day = "1",

doi = "10.1016/j.jpowsour.2014.09.167",

language = "English",

volume = "273",

pages = "931--936",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors

AU - Pohlmann, S.

AU - Olyschlaeger, T.

AU - Goodrich, P.

AU - Vicente, J. Alvarez

AU - Jacquemin, J.

AU - Balducci, A.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This work provides a first-time-study of Azepanium-based ionic liquids (ILs) as electrolyte components for electrochemical double layer capacitors (EDLCs). Herein, two Azepanium-based ILs, namely N-methyl, N-butyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(14)TFSI) and N-methyl, N-hexyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(16)TFSI) were compared with the established IL N-butyl, N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI) in terms of viscosity, conductivity, thermal stability and electrochemical behavior in EDLC systems. The ILs' operative potentials were found to be comparable, leading to operative voltages up to 3.5 V without significant electrolyte degradation.

AB - This work provides a first-time-study of Azepanium-based ionic liquids (ILs) as electrolyte components for electrochemical double layer capacitors (EDLCs). Herein, two Azepanium-based ILs, namely N-methyl, N-butyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(14)TFSI) and N-methyl, N-hexyl-azepanium bis(trifluoromethanesulfonyl)imide (Azp(16)TFSI) were compared with the established IL N-butyl, N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI) in terms of viscosity, conductivity, thermal stability and electrochemical behavior in EDLC systems. The ILs' operative potentials were found to be comparable, leading to operative voltages up to 3.5 V without significant electrolyte degradation.

KW - Ionic liquids

KW - Azepanium

KW - Supercapacitors

KW - High voltage

KW - PHYSICOCHEMICAL PROPERTIES

KW - CARBON

KW - CAPACITORS

KW - ENERGY

KW - PERFORMANCE

KW - STORAGE

U2 - 10.1016/j.jpowsour.2014.09.167

DO - 10.1016/j.jpowsour.2014.09.167

M3 - Article

SN - 0378-7753

VL - 273

SP - 931

EP - 936

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Azepanium-based ionic liquids as green electrolytes for high voltage supercapacitors

Abstract

Keywords

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