Mixtures of azepanium based ionic liquids and propylene carbonate as high voltage electrolytes for supercapacitors

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

doi:10.1016/j.electacta.2014.11.189

Mixtures of azepanium based ionic liquids and propylene carbonate as high voltage electrolytes for supercapacitors

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

^*Corresponding author for this work

Research output: Contribution to journal › Article

37 Citations (Scopus)

Abstract

This work provides a study of mixtures of the azepanium-based ionic liquid (IL) N-methyl, N-butyl-azepanium bis[(trifluoromethane) sulfonyl]imide (Azp₁₄TFSI) and propylene carbonate (PC) as electrolyte components in electrochemical double layer capacitors (EDLCs). The considered mixtures' properties were then compared to the properties of mixtures of N-butyl, N-methylpyrrolidinium bis[(trifluoromethane) sulfonyl]imide (Pyr₁₄TFSI) and PC in terms of viscosity, conductivity and electrochemical behavior. The mixtures' operative potentials were found to be comparable to each other, leading to operative voltages as high as 3.5 V, while retaining the low viscosities and high conductivities of PC based EDLC electrolytes.

Original language	English
Pages (from-to)	426-432
Number of pages	7
Journal	Electrochimica Acta
Volume	153
Early online date	01 Dec 2014
DOIs	https://doi.org/10.1016/j.electacta.2014.11.189
Publication status	Published - 20 Jan 2015

Keywords

electrolyte
Ionic liquids
mixtures
organic carbonates
supercapacitors

ASJC Scopus subject areas

Electrochemistry
Chemical Engineering(all)

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title = "Mixtures of azepanium based ionic liquids and propylene carbonate as high voltage electrolytes for supercapacitors",

abstract = "This work provides a study of mixtures of the azepanium-based ionic liquid (IL) N-methyl, N-butyl-azepanium bis[(trifluoromethane) sulfonyl]imide (Azp14TFSI) and propylene carbonate (PC) as electrolyte components in electrochemical double layer capacitors (EDLCs). The considered mixtures' properties were then compared to the properties of mixtures of N-butyl, N-methylpyrrolidinium bis[(trifluoromethane) sulfonyl]imide (Pyr14TFSI) and PC in terms of viscosity, conductivity and electrochemical behavior. The mixtures' operative potentials were found to be comparable to each other, leading to operative voltages as high as 3.5 V, while retaining the low viscosities and high conductivities of PC based EDLC electrolytes.",

keywords = "electrolyte, Ionic liquids, mixtures, organic carbonates, supercapacitors",

author = "S. Pohlmann and T. Olyschl{\"a}ger and P. Goodrich and Vicente, {J. Alvarez} and J. Jacquemin and A. Balducci",

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T1 - Mixtures of azepanium based ionic liquids and propylene carbonate as high voltage electrolytes for supercapacitors

AU - Pohlmann, S.

AU - Olyschläger, T.

AU - Goodrich, P.

AU - Vicente, J. Alvarez

AU - Jacquemin, J.

AU - Balducci, A.

PY - 2015/1/20

Y1 - 2015/1/20

N2 - This work provides a study of mixtures of the azepanium-based ionic liquid (IL) N-methyl, N-butyl-azepanium bis[(trifluoromethane) sulfonyl]imide (Azp14TFSI) and propylene carbonate (PC) as electrolyte components in electrochemical double layer capacitors (EDLCs). The considered mixtures' properties were then compared to the properties of mixtures of N-butyl, N-methylpyrrolidinium bis[(trifluoromethane) sulfonyl]imide (Pyr14TFSI) and PC in terms of viscosity, conductivity and electrochemical behavior. The mixtures' operative potentials were found to be comparable to each other, leading to operative voltages as high as 3.5 V, while retaining the low viscosities and high conductivities of PC based EDLC electrolytes.

AB - This work provides a study of mixtures of the azepanium-based ionic liquid (IL) N-methyl, N-butyl-azepanium bis[(trifluoromethane) sulfonyl]imide (Azp14TFSI) and propylene carbonate (PC) as electrolyte components in electrochemical double layer capacitors (EDLCs). The considered mixtures' properties were then compared to the properties of mixtures of N-butyl, N-methylpyrrolidinium bis[(trifluoromethane) sulfonyl]imide (Pyr14TFSI) and PC in terms of viscosity, conductivity and electrochemical behavior. The mixtures' operative potentials were found to be comparable to each other, leading to operative voltages as high as 3.5 V, while retaining the low viscosities and high conductivities of PC based EDLC electrolytes.

KW - electrolyte

KW - Ionic liquids

KW - mixtures

KW - organic carbonates

KW - supercapacitors

U2 - 10.1016/j.electacta.2014.11.189

DO - 10.1016/j.electacta.2014.11.189

M3 - Article

AN - SCOPUS:84918557502

VL - 153

SP - 426

EP - 432

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -