Preparation of Activated Carbon Based on Buddleja Paniculata as a Low-Cost Electrode Material for Supercapacitor Application

Authors

  • Sunil Koju Department of Physics, Amrit Science Campus, Tribhuvan University, Kathmandu, Nepal
  • Umesh Lawaju Department of Physics, Patan Multiple Campus, Tribhuvan University, Lalitpur, Nepal
  • Omkar Khadka Department of Physics, Amrit Science Campus, Tribhuvan University, Kathmandu, Nepal
  • Ram Chandra Rai Department of Physics, SUNY Buffalo State, Buffalo, NY 14222, USA
  • Mim Lal Nakarmi Department of Physics, Brooklyn College and the Graduate Center of the City University of New York, Brooklyn, NY 11210, USA
  • Prakash Joshi Department of Physics, Bhaktapur Multiple Campus, Tribhuvan University, Bhaktapur, Nepal

DOI:

https://doi.org/10.3126/jnphyssoc.v10i1.72846

Keywords:

Activated carbon, Buddleja Paniculata, Electrochemical double layer capacitance, Supercapacitor

Abstract

In this study, carbon was prepared by carbonization of ZnCl2 activated wood of Buddleja Paniculata at 700 °C and the activated carbon was used in the preparation of the electrodes of supercapacitors. Physical properties of the activated carbon were analyzed by using X-ray Diffraction (XRD), Raman spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), N2 adsorption-desorption isotherms, Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Spectroscopy (EDS). These analyses revealed a high carbon concentration (96.7 %) and a dominant amorphous carbon in the sample. The calculated Brunaeur-Emmet-Teller (BET) surface area of activated carbon was 1326 m2 g−1 with a high volume of microporous structures. The electrochemical properties of the prepared supercapacitor electrodes using activated carbon were analyzed by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) tests in a three-electrode system. They exhibited excellent electrochemical double layer capacitance (EDLC) behavior and a specific capacitance of 117.58 Fg−1 at 1 Ag−1 . The above investigation indicates that the activated carbon of Buddleja Paniculata can be a low-cost supercapacitor electrode material.

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Published

2024-12-31

How to Cite

Koju, S., Lawaju, U., Khadka, O., Rai, R. C., Nakarmi, M. L., & Joshi, P. (2024). Preparation of Activated Carbon Based on Buddleja Paniculata as a Low-Cost Electrode Material for Supercapacitor Application. Journal of Nepal Physical Society, 10(1), 77–83. https://doi.org/10.3126/jnphyssoc.v10i1.72846

Issue

Vol. 10 No. 1 (2024): Special Issue: ANPA Conference 2024

Section

Articles

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