Home / Current Issue / Paper 1712116
Electrochemical Behaviors, Charge Storage, Efficiency Capacity and Cycling Stability of Biochar ?Based Electrodes for Supercapacitors
Subject area: Physical Sciences and Environment · Area of research: Materials Sciences and Engineering
Abstract
This paper compared biochar electrodes made from yam stalk (YM), groundnut husk (GN), and their composite (HB) for supercapacitor applications. Electrochemical performance was evaluated using electrochemical tests (such as Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS). The HB composite electrode was found to be the most capacitive with a high specific capacitance of 225 F/g, energy density of 31.3 Wh/kg, and power density of about 250 W/kg. EIS results revealed low internal resistance (R? = 0.50 ?, Rct = 3.50 ?), confirming excellent conductivity and efficient ion diffusion. The enhanced electrode performance of the HB electrode was because of its optimized porous structure and the presence of synergistic interaction between biochar components. In summary, the research demonstrates the possibility of agricultural waste-based biochar to be used as low-cost eco-friendly and high-performance supercapacitor electrodes.
Keywords
Charge Storage, Cycling Stability, Efficiency Capacity and Super Capacitors
References
[1] Cho-long J, A., Jeongmin, L, A., Jae-Hyoung P, B., Chi-Hwan H, B and Yongseok J. (2013).
[2] Chen, R., Li, X. and Wang, Y. (2022). Electrochemical impedance spectroscopy of biochar-based supercapacitors. Electrochemistry Communications, 138, 107-115.
[3] Conway, B. E. (2013). Electrochemical supercapacitors: scientific fundamentals and technological applications. Springer Science & Business Media. Corporation, McLean, Virginia, USA, pp.1-34
[4] Liu, B., Zhang, H. and Wang, J. (2023). Specific capacitance of biochar-based
[5] supercapacitors: Influence of feedstock and pyrolysis conditions. Journal of Energy Storage, 47, 104-115.
[6] Pandolfo, A. G. and Hollenkamp, A. F. (2006). Carbon properties and their role in supercapacitors. Journal of Power Sources, 157(1), 11–27.
[7] Prabakar, P., Mustafa Mert, G., Muruganandam, L., and Sivagami, T. (2024). A comprehensive review on biochar for electrochemical energy storage applications: An emerging sustainable technology. Frontiers in Energy Research, https://doi.org/10.3389/fenrg.2024.1448520.
[8] Sardana, S., & Ohlan, A. (2022). A review on various parameters affecting supercapacitors. Journal of Energy Storage, 45, 103598. https://doi.org/10.1016/j.est.2021.103598 .
[9] Wang, H. and Pilon, L. (2012). Physical interpretation of cyclic voltammetry for measuring electric double layer capacitances. Electrochimica Acta, 64, 130–139.
[10] .Wang, M., Chen, Y. and Zhang, L. (2023). Galvanostatic charge-discharge characteristics of biochar electrodes. Journal of Power Sources, 530, 231-240.
[11] Zhang, L., Zhou, C., Li, P., Li, X., Wang, Y., & Li, C. (2022). A sustainable bio-based char as emerging electrode material for high performance supercapacitors.
[12] Zhao, B., Chen, D., Xiong, X., Song, B., Hu, R., Zhang, Q. and Liu, M. (2017). highenergy, long cycle-life hybrid supercapacitor based on graphene composite electrodes. Energy Storage Materials, 7, 32-39.
How to cite this paper
@article{1712116,
author = {Ikpatim Stephen, Attah Daniel E. B., Ugye T. J., Amadi, I. J.},
title = {Electrochemical Behaviors, Charge Storage, Efficiency Capacity and Cycling Stability of Biochar ?Based Electrodes for Supercapacitors},
journal = {Iconic Research And Engineering Journals},
year = {2025},
volume = {9},
number = {5},
pages = {2066-2072},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1712116.pdf},
abstract = {This paper compared biochar electrodes made from yam stalk (YM), groundnut husk (GN), and their composite (HB) for supercapacitor applications. Electrochemical performance was evaluated using electrochemical tests (such as Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD), and Electrochemical Impedance Spectroscopy (EIS). The HB composite electrode was found to be the most capacitive with a high specific capacitance of 225 F/g, energy density of 31.3 Wh/kg, and power density of about 250 W/kg. EIS results revealed low internal resistance (R? = 0.50 ?, Rct = 3.50 ?), confirming excellent conductivity and efficient ion diffusion. The enhanced electrode performance of the HB electrode was because of its optimized porous structure and the presence of synergistic interaction between biochar components. In summary, the research demonstrates the possibility of agricultural waste-based biochar to be used as low-cost eco-friendly and high-performance supercapacitor electrodes.},
keywords = {Charge Storage, Cycling Stability, Efficiency Capacity and Super Capacitors},
month = {November},
doi = {https://doi.org/10.64388/IREV9I5-1712116}
}