ANALISIS PERFORMA ELEKTROKIMIA PADA PENGEMBANGAN ELEKTRODA AC@CCF SEBAGAI PERANGKAT SUPERKAPASITOR
Aprilia Pramu Dhita1, a), Rike Yudianti2, b)Iwan Sugihartono1, c)

1Program Studi Fisika, FMIPA, Universitas Negeri Jakarta, Jl. Rawamangun Muka Raya, Rawamangun 13220, Indonesia
a)pramudhitaaprilia[at]gmail.com b) rike001[at]brin.go.id c) iwan.sugihartono[at]unj.ac.id
2Pusat Riset Elektronika, Badan Riset dan Inovasi Nasional (BRIN), KST Sama^un Samadikun, Jalan Sangkuriang, Bandung 40135, Indonesia

Abstract

The active composite material consisting of activated carbon derived from oil palm empty fruit bunches and the metal oxide Copper Cobalt Ferrite (AC@CCF) was successfully synthesized using the hydrothermal method. Electrochemical analysis demonstrated that the AC@CCF composite electrode exhibited excellent capacitive performance due to the synergistic contribution of porous activated carbon and spinel ferrite CuCoFe2O4. Cyclic voltammetry results revealed quasi-rectangular curves with a large enclosed area and stable shape retention within the scan rate range of 5-100 mV/s, indicating high electrochemical reversibility and rapid ion diffusion. The porous structure of the activated carbon provided a large surface area and efficient ion transport pathways, thereby enhancing the interaction between the electrolyte and the electrode surface, while the presence of CuCoFe2O4 contributed to improved charge transfer and electrochemical stability. Furthermore, the AC@CCF electrode achieved a specific capacitance of 174 F/g at a current density of 0.1 A/g. The synergy between activated carbon and spinel ferrite effectively enhanced the energy storage capability and maintained stable performance at various scan rates, demonstrating its strong potential as a high-performance and sustainable supercapacitor electrode material.

Keywords: supercapacitor, activated carbon, copper cobalt ferrite, empty fruit bunch.

Topic: Material Physics