KF KFI
Vol. 22, No. 3, 2025 08 Sep 2026

Biomass-derived activated carbon from acacia pods as a green electrode material for supercapacitors

ABSTRAK

Biomass from acacia pods has great potential as a raw material for activated carbon due to its abundant availability, environmentally friendly nature, and high carbon content. In this study, acacia pods were processed into charcoal and then chemically activated using 1 M ZnCl2 solution, followed by carbonization at 600°C and physical activation at 850°C to improve the quality of the carbon structure formed. Physical characterization showed that the synthesized activated carbon had a density of 58.8 g/cm3, which plays an important role in the electrode formation and mechanical stability of the material. The electrochemical properties were evaluated using cyclic voltammetry (CV) in 3 M Na2SO4 electrolyte, which produced a nearly rectangular voltammetric curve, indicating good capacitive response and efficient ion movement within the electrode. The maximum specific capacitance obtained was 159 F/g at a scan rate of 1 mV/s, indicating promising charge storage capabilities. These results confirm that acacia pods can be converted into high-performance activated carbon, while offering a sustainable electrode material alternative for environmentally friendly supercapacitor applications.

KATA KUNCI

  • Acacia pods; activated carbon; electrode material; local biomass; supercapacitor

CARA MENGUTIP

Nadja Melika Putri, Nursyafni Nursyafni, Apriwandi Apriwandi, Vira Friska, Pharada Kresna, Julnaidi Julnaidi, Muhammad Nasir, Minarni Shiddiq, Erwin Amiruddin, Awaludin Martin, Rika Taslim, Erman Taer (2026) Biomass-derived activated carbon from acacia pods as a green electrode material for supercapacitors. Komunikasi Fisika Indonesia, 22(3), 221-226 https://doi.org/10.31258/jkfi.22.3.221-226
Nadja Melika Putri, Nursyafni Nursyafni, Apriwandi Apriwandi, Vira Friska, Pharada Kresna, Julnaidi Julnaidi, Muhammad Nasir, Minarni Shiddiq, Erwin Amiruddin, Awaludin Martin, Rika Taslim, Erman Taer "Biomass-derived activated carbon from acacia pods as a green electrode material for supercapacitors," Komunikasi Fisika Indonesia, vol. 22, no. 3, pp. 221-226, 2026. doi: 10.31258/jkfi.22.3.221-226.
@article{putri2026,
  author = {Nadja Melika Putri and Nursyafni Nursyafni and Apriwandi Apriwandi and Vira Friska and Pharada Kresna and Julnaidi Julnaidi and Muhammad Nasir and Minarni Shiddiq and Erwin Amiruddin and Awaludin Martin and Rika Taslim and Erman Taer},
  title = {Biomass-derived activated carbon from acacia pods as a green electrode material for supercapacitors},
  journal = {Komunikasi Fisika Indonesia},
  year = {2026},
  volume = {22},
  number = {3},
  pages = {221-226},
  doi = {10.31258/jkfi.22.3.221-226},
  issn = {2579-521X},
}