Electrolyte concentration and nafion membrane effects on supercapacitor discharge dynamics and charge retention

Jagendra Chaudhari

Abstract

Supercapacitors (SCs) are promising energy storage devices due to their high charge retention and rapid discharge capabilities. However, the efficiency of supercapacitors can be influenced by factors such as the choice of separator material and electrolyte concentration. This study investigates the performance of SCs fabricated using Nafion separators with Na₂SO₄ electrolytes of varying concentrations (1M and 0.5M) and charging conditions. The objective of this research is to evaluate the self-discharge behavior, capacitance, and voltage stability of supercapacitors to determine the optimal configuration for high-performance energy storage. The methodology involves fabricating SCs with Nafion separators and charging them under different voltages (1V, 1.2V, 1.4V) for varying time intervals (1 minute, 1.5 minutes, and 2 minutes). Self-discharge characteristics were monitored, and capacitance was calculated using the capacitor discharge equation. The experiments also included discharge tests using a 500-ohm resistor to simulate realistic usage. Major findings include that SCs with Nafion separators and 0.5M Na₂SO₄ electrolyte exhibit significantly lower self-discharge rates and more stable voltage profiles than those with napkin paper separators. Higher charging voltages and longer charging times lead to better charge retention. These results suggest that Nafion membranes and optimized electrolyte concentrations enhance supercapacitor performance, making them suitable for long-term, efficient energy storage applications.

Keywords

Supercapacitors; Nafion separator; Self-discharge; Electrolyte concentration; Capacitance; Energy storage

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Alafogianni,P.,Dassios,K.,Farmaki,S.,Antiohos, S.K.,Matikas,T.E.,& Barkoula,


Amrollahi, P., Krasinski, J. S., Vaidyanathan, R., Tayebi, L., & Vashaee, D. (2015). Electrophoreticdeposition(EPD):Fundamentalsandapplicationsfromnano-to micro-scale structures. Handbook of Nanoelectrochemistry, Springer International Publishing Switzerland.


Anwar,S.,Gowthamaraju,S.,Mishra,B.K.,Singh,S.K.,&Anwar,S.(2015). MaterialChemistryandPhysics,1-7.


Hwang, B. H., Chang, C. L., Hsu, C. S., & Fu, C. Y. (2007). Electrostatic spray deposition of NiO/CGO films.Journal of Physics D: Applied Physics,40(11), 3448.


Iro, Z. S., Subramani, C., & Dash, S. S. (2016). A brief review on electrode materials for supercapacitor.International Journal of Electrochemical Science,11(12), 10628-10643.


Manocha,S. M.(2003).Porous Carbons. SadhanaPart 1&2.28: 335-348.


Minami, D., Horikoshi, S., Sakai, K., Sakai, H., & Abe, M. (2011). Dynamic Adsorption Behavior of Surfactants on Single-Wall Carbon Nanotubes in AqueousMediabyExperimentationandMolecularDynamicsSimulation. Journal of the Japan Society of Colour Material, 84(2), 39-42.


N. M. (2016). On the efficiency of UV–vis spectroscopy in assessing the dispersionqualityinsonicatedaqueoussuspensionsofcarbonnanotubes.Colloids and Surfaces A: Physicochemical and Engineering Aspects, 495, 118-124.


Nguyen,V.S.,R.,D.,&Vincent,B.(2013).Dispersionofnanoparticles:Fromorganic solvents to polymer solutions. Ultrasonics Sonochemistry, 20(4), 1-9. https://doi.org/10.1016/j.ultsonch.2013.07.015


Nikolaev, A. Y. (2017, February). Simulation of the plain milling process. In IOP conference series: materials science and engineering (Vol. 177, No. 1, p. 012080). IOP Publishing.


Pandey, A. (2018). Influence of direct current field on dispersion of activated carbon. M.Sc. Dissertation, Dean Office, Institute of Science and Technology, Tribhuvan University, Nepal.


Poudel, K. (2018). Study on effect of direct current field on dispersion of activated carbon in cationic surfactant. M.Sc. Dissertation, Dean Office, Institute of Science and Technology, Tribhuvan University, Nepal.


Rastogi, R., Kaushal, R., Tripathi, S. K., Sharma, A. L., Kaur, I., & Bharadwaj, L. M. (2008).Comparativestudyofcarbonnanotubedispersionusingsurfactants. Journal of colloid and interface science, 328(2), 421-428.


Schneuwly,A.,Bärtschi,M.,Hermann,V.,Sartorelli,G.,Gallay,R.,&Koetz,R. montena components SA, 1728 Rossens, Switzerland Tel.:+ 41 26 411 85 50;


Shah,S.K.,Bhattarai,A.,&Chatterjee,S.K.(2011).Surfactants,itsapplicationsand effects on environment. Bibechana, 7, 61-64.


Shrestha,M.,Amatya,I.,Wang,K.,Zheng,B.,Gu,Z.,&Fan,Q.H.(2017). ElectrophoreticdepositionofactivatedcarbonYP-50withethylcellulose binders for supercapacitor electrodes. Journal of Energy Storage, 13, 206-210.


Shrestha, M., Amatya, I., Wang, K., Zheng, B., Gu, Z., & Fan, Q. H. (2017). Electrophoretic deposition of activated carbon YP-50 with ethyl cellulose binders forsupercapacitor electrodes. Journal of EnergyStorage, 13, 206-210.


Tan, Y., & Resasco, D. E. (2005). Dispersion of single-walled carbon nanotubes of narrow diameter distribution.The Journal of Physical Chemistry B,109(30), 14454-14460.


Taurozzi, J. S., Hackley, V. A., & Wiesner, M. R. (2011). Ultrasonic dispersion of nanoparticles for environmental, health and safety assessment–issues and recommendations. Nanotoxicology, 5(4), 711-729.


Wang,R.,Qian,Y.,Li,W.,Zhu,S.,Liu,F.,Guo,Y.,...&Liu,L.(2018).Performance-enhanced activated carbon electrodes for supercapacitors combining both graphene-modified current collectors and graphene conductiveadditive. Materials, 11(5), 799.


Yang, R. T. (1992). Active carbon. By H. Jankowska, A. Swiatkowski, and J. Choma, Ellis Horwood, West Sussex, England, and Prentice-Hall, Englewood Cliffs, NJ, 1991, 280 pp.

DOI: https://doi.org/10.20961/jphystheor-appl.v10i1.111141

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