Enhancing EDLC applications with BMIMBF4-integrated cellulose gel electrolyte for sustainable energy storage

Shamsuri, N.A. and Hamsan, M.H. and Shukur, M.F. and Alias, Y. and Halim, S.N.A. and Aziz, S.B. and Jahidin, A.H. and Sulaiman, M. and Yuwana, L. and Siong, S.O.J. and Sarih, N.M. and Kadir, M.F.Z. (2024) Enhancing EDLC applications with BMIMBF4-integrated cellulose gel electrolyte for sustainable energy storage. Journal of Energy Storage, 75.

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Researchers worldwide have extensively carried out the fabrication of supercapacitors using ionic liquid-based gel electrolytes. Gel polymer electrolytes (GPEs) are an excellent alternative electrolyte due to their high ionic conductivity and lack of safety issues associated with solid and liquid polymer electrolytes. This work highlights the performance of a GPE composed of 1-butyl-3-methylimidazolium tetrafluoroborate BMIMBF4 mixed with ammonium nitrate (NH4NO3) as the charge carrier, entrapped in methylcellulose (MC) for its application as an electrolyte in supercapacitors. The results of the Fourier transform infrared spectroscopy (FTIR) study are in good agreement with the literature, confirming the interaction between the materials observed through the shifting of the hydroxyl band. Moreover, the addition of BMIMBF4 successfully reduced the degree of crystallinity and crystallite size, thus enhancing the amorphous region of the electrolytes, as observed in the X-ray diffraction (XRD) diffractogram. The sample with 10 wt% BMIMBF4 (IL10) exhibits the highest ambient conductivity of (2.44 ± 0.36) � 10�2 S cm�1. The obtained ionic transference number (tion) of 0.98 confirms that ions are the dominant charge carriers. Considering its electrochemically stability up to 2.6 V within a potential range of 3.0 V, the IL10 electrolyte was chosen as a separator for application in an electric double-layer capacitor (EDLC). The EDLC is characterized via cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) analysis. © 2023

Item Type: Article
Impact Factor: cited By 0
Uncontrolled Keywords: Charge carriers; Crystallinity; Crystallite size; Cyclic voltammetry; Electrolytic capacitors; Energy storage; Fourier transform infrared spectroscopy; Ionic liquids; Polyelectrolytes; Solid electrolytes, 1-Butyl-3-methylimidazolium tetrafluoroborate; Cellulose gels; Gel electrolyte; Gel polymer electrolytes; Liquid polymers; Methylcellulose; Polymer electrolyte; Safety issues; Solid polymers; Sustainable energy, Supercapacitor, Application; Charge Carriers; Conductivity; Crystallinity; Gels; Liquids; Polyelectrolytes
Depositing User: Mr Ahmad Suhairi Mohamed Lazim
Date Deposited: 11 Dec 2023 03:21
Last Modified: 11 Dec 2023 03:21
URI: http://scholars.utp.edu.my/id/eprint/38104

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