Electrical Double Layer Capacitors Based on Two 1-Ethyl-3-Methylimidazolium Ionic Liquids with Different Anions

Heisi Kurig; Mihkel Vestli; Alar Jänes; Enn Lust

doi:10.1149/1.3596722

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Electrical Double Layer Capacitors Based on Two 1-Ethyl-3-Methylimidazolium Ionic Liquids with Different Anions

Heisi Kurig Mihkel Vestli Alar Jänes Enn Lust

Year: 2011 Journal: Electrochemical and Solid-State Letters Vol: 14 (8)Pages: A120-A120 Publisher: Electrochemical Society

DOI: 10.1149/1.3596722

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Abstract

The electrochemical characteristics for the electrical double layer capacitors (EDLCs) based on the microporous carbon cloth (MPCC) electrode and 1-ethyl-3-methyl imidazolium tetrafluoroborate or 1-ethyl-3-methyl imidazolium tetracyanoborate as an electrolyte have been studied using the cyclic voltammetry and impedance spectroscopy methods. The considerable dependence of gravimetric series capacitance, phase angle, power and energy densities on the composition of the anion in room-temperature ionic liquid (RTIL) have been demonstrated. The region of ideal polarisability for both MPCC|RTIL EDLCs is up to 3.2 V.

Keywords:

Ionic liquid Materials science Microporous material Gravimetric analysis Tetrafluoroborate Capacitance Cyclic voltammetry Electrolyte Dielectric spectroscopy Supercapacitor Capacitor Electrochemistry Electrode Double-layer capacitance Analytical Chemistry (journal) Chemical engineering Composite material Organic chemistry Physical chemistry Chemistry Voltage Electrical engineering

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Conducting polymers and applications

Physical Sciences → Materials Science → Polymers and Plastics

Electrochemical sensors and biosensors

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Ionic liquids properties and applications

Physical Sciences → Chemical Engineering → Catalysis

Electrical Double Layer Capacitors Based on Two 1-Ethyl-3-Methylimidazolium Ionic Liquids with Different Anions

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