Studies on electrical double layer capacitor with a low-viscosity ionic liquid 1-ethyl-3-methylimidazolium tetracyanoborate as electrolyte
Source abstract
Abstract
The performance of an electrical double layer capacitor (EDLC) composed of high surface area activated carbon electrodes and a new ionic liquid, 1-ethyl-3-methylimidazolium tetracyanoborate, [EMIm]TCB, as the electrolyte has been investigated by impedance spectroscopy, cyclic voltammetry and galvanostatic charge–discharge studies. The high ionic conductivity (~1·3 × 10 − 2 S cm − 1 at 20 °C) and low viscosity (~22 cP) of the ionic liquid, [EMIm]TCB, make it attractive as electrolyte for its use in EDLCs. The optimum capacitance value of 195·5 F g − 1 of activated carbon has been achieved with stable cyclic performance.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Ionic liquids properties and applications · Electrochemical sensors and biosensors
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