Significant Study on LIG Supercapacitor Electrode Performance in Different Aqueous Electrolytes

Abstract:

Laser-induced graphene (LIG) has gained much attention as a promising material for advanced energy storage solutions, including supercapacitors, due to its many advantages. This study presents the fabrication and characterization of LIG electrodes for electrochemical energy storage, a significant contribution to the field. Laser writing parameters such as laser power and scanning speed were optimized to produce highly conductive and electrochemically active LIG material. Transmission electron microscopy and Raman spectroscopy confirmed the formation of high-quality graphene with excellent electrical conductivity. A systematic investigation of the electrochemical performance of the LIG electrodes was conducted using various aqueous electrolytes, including H₂SO₄ (sulfuric acid), KOH (potassium hydroxide), NaOH (sodium hydroxide), and Na₂SO₄(sodium sulfate), all at the same concentration. A solid-state supercapacitor was assembled using two separate LIG electrodes, and its electrochemical performance was analyzed using Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The specific areal capacitance of the supercapacitor was determined to be 6.9 mF/cm² at a scan rate of 10 mV/s. The device demonstrated performance consistent with many previously reported LIG-based supercapacitors.

• Periodical: Defect and Diffusion Forum (Volume 444)
• Pages: 165-170
• DOI: https://doi.org/10.4028/p-sptJ0d
• Online since: October 2025
• Authors: Solomon A. Mensah*, Ahmed M.R. Fath El-Bab, Yoichi Tominaga, Ahmed S.G. Khalil
• Keywords: Electrolyte, LIG, Polyimide, Supercapacitor

References

[1] Ohalete, N., Aderibigbe, A., Ani, E., Ohenhen, P., & Daraojimba, D. (2024). Challenges and innovations in electro-mechanical system integration: a review. Acta Electronica Malaysia (AEM).

[2] Reveles-Miranda, M., Ramirez-Rivera, V., & Pacheco-Catalán, D. (2024). Hybrid energy storage: Features, applications, and ancillary benefits. Renewable and Sustainable Energy Reviews, 192, 114196.

DOI: 10.1016/j.rser.2023.114196

[3] Jasrotia, P., & Kumar, T. (2024). Eco-Friendly Supercapacitors: Key Elements in a Sustainable Energy Landscape. In Eco-Friendly Supercapacitors: Design and Future Perspectives in Sustainable and Green Energy Storage Devices (pp.139-162). American Chemical Society.

DOI: 10.1021/bk-2024-1471.ch006

[4] Phor, L., Kumar, A., & Chahal, S. (2024). Electrode materials for supercapacitors: a comprehensive review of advancements and performance. Journal of Energy Storage, 84, 110698.

DOI: 10.1016/j.est.2024.110698

[5] Urade, A. R., Lahiri, I., & Suresh, K. S. (2023). Graphene properties, synthesis and applications: a review. Jom, 75(3), 614-630.

DOI: 10.1007/s11837-022-05505-8

[6] Lin, J., Peng, Z., Liu, Y., Ruiz-Zepeda, F., Ye, R., Samuel, E. L., ... & Tour, J. M. (2014). Laser-induced porous graphene films from commercial polymers. Nature communications, 5(1), 5714.

DOI: 10.1038/ncomms6714

[7] Mohamed, S. R., Abdul-Aziz, M. R., Saber, S., Khabiri, G., & Khalil, A. S. (2023). Precise engineering of Fe3O4/MWCNTs heterostructures for high-performance supercapacitors. Journal of Alloys and Compounds, 957, 170281.

DOI: 10.1016/j.jallcom.2023.170281

[8] Sharma, R., Kumar, H., Kumar, G., Sharma, S., Aneja, R., Sharma, A. K., ... & Kumar, P. (2023). Progress and challenges in electrochemical energy storage devices: Fabrication, electrode material, and economic aspects. Chemical Engineering Journal, 468, 143706.

DOI: 10.1016/j.cej.2023.143706

[9] Muzaffar, A., Ahamed, M. B., & Hussain, C. M. (2023). Electrolyte materials for supercapacitors. In Smart Supercapacitors (pp.227-254). Elsevier.

DOI: 10.1016/b978-0-323-90530-5.00031-9

[10] Sindhu, B., Kothuru, A., Sahatiya, P., Goel, S., & Nandi, S. (2021). Laser-induced graphene printed wearable flexible antenna-based strain sensor for wireless human motion monitoring. IEEE Transactions on Electron Devices, 68(7), 3189-3194.

DOI: 10.1109/ted.2021.3067304

[11] Ott, A. K., & Ferrari, A. C. (2024). Raman spectroscopy of graphene and related materials. Encyclopedia of Condensed Matter Physics, 2nd ed.; Chakraborty, T., Ed, 233-247.

DOI: 10.1016/b978-0-323-90800-9.00252-3

[12] Dixit, N., & Singh, S. P. (2022). Laser-induced graphene (LIG) as a smart and sustainable material to restrain pandemics and endemics: A perspective. ACS omega, 7(6), 5112-5130.

DOI: 10.1021/acsomega.1c06093

[13] Karimi, Z., Moon, J., Malzahn, J., Eddings, E., & Warren, R. (2023). Ultra-low cost supercapacitors from coal char: effect of electrolyte on double layer capacitance. Energy Advances, 2(7), 1036-1044.

DOI: 10.1039/d3ya00064h

[14] Chowdhury, A., Dhar, A., Biswas, S., Sharma, V., Burada, P. S., & Chandra, A. (2020). Theoretical model for magnetic supercapacitors—From the electrode material to electrolyte ion dependence. The Journal of Physical Chemistry C, 124(49), 26613-26624.

DOI: 10.1021/acs.jpcc.0c07538

[15] Zhong, C., Deng, Y., Hu, W., Qiao, J., Zhang, L., & Zhang, J. (2015). A review of electrolyte materials and compositions for electrochemical supercapacitors. Chemical Society Reviews, 44(21), 7484-7539.

DOI: 10.1039/c5cs00303b

[16] Makinde, W. O., Hassan, M. A., Pan, Y., Guan, G., López-Salas, N., & Khalil, A. S. (2024). Sulfur and nitrogen co-doping of peanut shell-derived biochar for sustainable supercapacitor applications. Journal of Alloys and Compounds, 991, 174452.

DOI: 10.1016/j.jallcom.2024.174452

[17] Abdul-Aziz, M. R., Hassan, A., Abdel-Aty, A. A., Saber, M. R., Ghannam, R., Anis, B., ... & Khalil, A. S. (2020). High performance supercapacitor based on laser induced graphene for wearable devices. IEEE Access, 8, 200573-200580.

DOI: 10.1109/access.2020.3035828