Orange Peel-Derived Activated Carbon as a Potential Electrode Material for Supercapacitor Application
Lee, Yan Kang
Liew, Chia Pao
Kiew, Peck Loo
Foo, Braedan Chuan Yi
Yeoh, Wei Ming
Ho, Mui Yen

How to Cite

Lee Y.K., Liew C.P., Kiew P.L., Foo B.C.Y., Yeoh W.M., Ho M.Y., 2023, Orange Peel-Derived Activated Carbon as a Potential Electrode Material for Supercapacitor Application, Chemical Engineering Transactions, 106, 1285-1290.


Supercapacitors are emerging as a viable alternative to batteries in a variety of applications. In recent years, extensive research has been carried out on the development of new electrode material to produce supercapacitors with high energy density. In this study, 2 different types of activated carbon (AC) namely commercialized AC (i.e. steam-activated charcoal) and self-prepared phosphoric acid-treated orange peel AC were used to fabricate the supercapacitor electrodes. Prior to the fabrication, the structural properties and surface morphology of both ACs were examined using the Brunaeuer-Emmett-Teller (BET) analysis and Scanning Electron Microscope (SEM). The results revealed that commercialized AC exhibited more pores on its surface and a higher BET surface area of 818.8441 m2/g than orange peel-derived AC, which had a surface area of 137.9910 m2/g. The fabricated coil cell supercapacitor in sodium sulfate electrolyte demonstrated specific capacitance of 35.5880 F/g for the commercialized AC and 57.7056 F/g for the orange peel-derived AC. Higher energy density was recorded for supercapacitor fabricated using orange peel-derived AC (8.0147 Wh/kg), compared to the commercialized AC counterpart (4.9428 Wh/kg). Despite its inferior physical properties, the superiority of supercapacitor performance (e.g., specific capacitance and energy density) with orange peel AC suggested that there is a potential for orange peel AC-based supercapacitors to be used in real-world applications, but more research on the optimization of electrode composition, type, and electrolyte concentration is required.