Investigation of the Electrochemical Performance of Supercapacitor Pouch Cells in Hybrid and Symmetric Configurations using Aqueous Electrolytes

Kamila Temirkulova; Aigul Tugelbayeva; Balaussa Balgabayeva; Bekzat Khamzin; Sami Ullah Khan; Zhazira Supiyeva

doi:10.18321/ectj1687

Authors

Kamila Temirkulova Al-Farabi Kazakh National University, 71 Al-Farabi Ave., 050040, Almaty, Kazakhstan; Satbayev University, 22a Satpaev Str., 050013, Almaty, Kazakhstan
Aigul Tugelbayeva Satbayev University, 22a Satpaev Str., 050013, Almaty, Kazakhstan
Balaussa Balgabayeva Al-Farabi Kazakh National University, 71 Al-Farabi Ave., 050040, Almaty, Kazakhstan; Satbayev University, 22a Satpaev Str., 050013, Almaty, Kazakhstan
Bekzat Khamzin Al-Farabi Kazakh National University, 71 Al-Farabi Ave., 050040, Almaty, Kazakhstan; Satbayev University, 22a Satpaev Str., 050013, Almaty, Kazakhstan
Sami Ullah Khan Paracelsus Medical University, Strubergasse 21, 5020 Salzburg, Austria
Zhazira Supiyeva Al-Farabi Kazakh National University, 71 Al-Farabi Ave., 050040, Almaty, Kazakhstan; Satbayev University, 22a Satpaev Str., 050013, Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj1687

Keywords:

Supercapacitor, Aqueous electrolyte, Redox processes, Hybrid capacitance, Pouch cell

Abstract

This paper reports the electrochemical characteristics of supercapacitor pouch cells assembled on the basis of activated carbon YP80F and two types of aqueous electrolytes: 5 M LiTFSI + 0.5 M NaI (redox-active electrolyte) and 10 M LiTFSI (neat electrolyte). A comparative analysis was performed using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCPL) methods in the voltage range from 0.6 to 1.5 V. It was found that the system with the addition of NaI demonstrates pronounced effects on overall performance due to reversible I^⁻/I₂ redox processes, which provides an increase in specific capacitance to 128 F/g and energy to 9.26 W·h/kg at a voltage of 1.5 V while maintaining high Coulombic efficiency (>97%). In contrast, the supercapacitor with 10 M LiTFSI electrolyte exhibits classic electric double layer (EDL) behavior and lower specific capacitance (64 F/g) but high stability and reversibility (efficiency >99%). A comparative analysis showed that the hybrid supercapacitor pouch cell with NaI is more promising for tasks requiring high energy density, while concentrated LiTFSI-based system is preferable for applications focused on durability and stability. The results obtained contribute to the understanding of charge accumulation mechanisms in aqueous supercapacitors and open up prospects for optimizing their characteristics depending on the target operating conditions. The results highlight that the 5 M LiTFSI + 0.5 M NaI electrolyte enhances energy density through I^⁻/I₂ redox reactions, while the 10 M LiTFSI system offers superior stability, demonstrating a trade-off between energy density and long-term performance.

References

(1) D. Dong, Y. Xiao, Recent progress and challenges in coal-derived porous carbon for supercapacitor applications, Chem. Eng. J. 470 (2023) 144441. Crossref

(2) Y. Cheng, Z. Lia, Y. Li, S. Dai, G. Ji, et al., Rationally regulating complex dielectric parameters of mesoporous carbon hollow spheres to carry out efficient microwave absorption, Carbon 127 (2018) 643–652. Crossref

(3) X.-J. Zhang, J.-Q. Zhu, P.-G. Yin, A.-P. Guo, A.-P. Huang, et al., Tunable high‐performance microwave absorption of Co₁–xS hollow spheres constructed by nanosheets within ultralow filler loading, Adv. Funct. Mater. 28 (2018) 1800761. Crossref

(4) J. Cui, Y. Xi, S. Chen, D. Li, X. She, et al., Prolifera‐green‐tide as sustainable source for carbonaceous aerogels with hierarchical pore to achieve multiple energy storage, Adv. Funct. Mater. 26 (2016) 8487–8495. Crossref

(5) Z.-E. Tang, S. Lim, Y.-L. Pang, H.-C. Ong, K.-T. Lee, Synthesis of biomass as heterogeneous catalyst for application in biodiesel production: State of the art and fundamental review, Renew. Sustain. Energy Rev. 92 (2018) 235–253. Crossref

(6) G. Xu, J. Han, B. Ding, P. Nie, J. Pan, et al., Biomass-derived porous carbon materials with sulfur and nitrogen dual-doping for energy storage, Green Chem. 17 (2015) 1668–1674. Crossref

(7) Z. Gao, Y. Zhang, N. Song, X. Li, Biomass-derived renewable carbon materials for electrochemical energy storage, Mater. Res. Lett. 5 (2017) 69–88. Crossref

(8) H. Xu, X. Yin, M. Zhu, M. Han, Z. Hou, et al., Carbon hollow microspheres with a designable mesoporous shell for high-performance electromagnetic wave absorption, ACS Appl. Mater. Interfaces 9 (2017) 6332–6341. Crossref

(9) Y. Ding, Z. Zhang, B. Luo, Q. Liao, S. Liu, et al., Investigation on the broadband electromagnetic wave absorption properties and mechanism of Co₃O₄-nanosheets/reduced-graphene-oxide composite, Nano Research 10 (2017) 980–990. Crossref

(10) C. Luo, T. Jiao, J. Gu, Y. Tang, J. Kong, Graphene shield by SiBCN ceramic: a promising high-temperature electromagnetic wave-absorbing material with oxidation resistance, ACS Appl. Mater. Interfaces 10 (2018) 39307–39318. Crossref

(11) B.E. Conway, Electrochemical Supercapacitors: Scientific Fundamentals and Technological Applications, Springer, 1999, 698 p.

(12) P. Simon, Y. Gogotsi, Materials for electrochemical capacitors, Nat. Mater. 7 (2008) 845–854.

(13) A. Nazir, H. Yu, L. Wang, M. Haroon, R.S. Ullah, et al., Recent progress in the modification of carbon materials and their application in composites for electromagnetic interference shielding, J. Mater. Sci. 53 (2018) 8699–8719. Crossref

(14) C. Luo, Y. Tang, T. Jiao, J. Kong, High-temperature stable and metal-free electromagnetic wave-absorbing SiBCN ceramics derived from carbon-rich hyperbranched polyborosilazanes, ACS Appl. Mater. Interfaces 10 (2018) 28051–28061. Crossref

(15) G.A. Safitri, K. Nueangnoraj, P. Sreearunothai, J. Manyam, Fabrication of activated carbon pouch cell supercapacitor: Effects of calendering and selection of separator–solvent combination, Current Applied Science and Technology 20 (2020) 124–135. URL

(16) B.K. Chakrabarti, K.B. Dönmez, Z. Çobandede, C.T.J. Low, Practical pouch cell supercapacitor electrodes by electrophoretic deposition of activated carbon on nickel foam, ChemElectroChem 11 (2024) e202400244. Crossref

(17) C. Prehal, H. Fitzek, G. Kothleitner, V. Presser, B. Gollas, et al., Persistent and reversible solid iodine electrodeposition in nanoporous carbons, Nat. Commun. 11 (2020) 4838. Crossref

(18) Q. Abbas, H. Fitzek, V. Pavlenko, B. Gollas, Towards an optimized hybrid electrochemical capacitor in iodide-based aqueous redox-electrolyte: Shift of equilibrium potential by electrodes mass-balancing, Electrochim. Acta 337 (2020) 135785. Crossref

(19) Q. Abbas, H. Fitzek, H. Schröttner, S. Dsoke, B. Gollas, Immobilization of polyiodide redox species in porous carbon for battery-like electrodes in eco-friendly hybrid electrochemical capacitors, Nanomaterials 9 (2019) 1413. Crossref

(20) H. Fitzek, M. Sterrer, D. Knez, H. Schranger, A. Sarapulova, et al., Impact of iodine electrodeposition on nanoporous carbon electrode determined by EQCM, XPS and in situ Raman spectroscopy, Nanomaterials 13 (2023) 1545. Crossref

(21) Z. Mansurov, Z. Supiyeva, K. Avchukir, A. Taurbekov, M. Yeleuov, et al., Investigation of gold electrosorption onto gold and carbon electrodes using an electrochemical quartz crystal microbalance, Eurasian Chem.-Technol. J. 21 (2019) 283–289. Crossref

(22) Z. Supiyeva, Z. Mansurov, S. Azat, Q. Abbas, A unique choline nitrate-based organo-aqueous electrolyte enables carbon/carbon supercapacitor operation in a wide temperature window (−40 °C to 60 °C), Front. Chem. 12 (2024). Crossref

(23) V. Pavlenko, Z. Supiyeva, Application of carbons produced from rice husk in the process of capacitive deionization, Eurasian Chem.-Technol. J. 22 (2020) 277–284. Crossref

(24) K. Askaruly, Z. Supiyeva, S. Azat, Y. Yeszhan, X. Pan, et al., From electrochemical performance to mechanical issues: A review on silicon anode architectures for advanced lithium-ion batteries, J. Power Sources 659 (2025) 238423. Crossref