Synthesis of Activated Carbon From Cassava Peel Biomass With KOH Activator as Supercapacitor Abdul Ngalimus Salam (a), Wahyudi Nandana Munte (c), Mira Ayu Rahmawati (a), Nidya Chitraningrum (b), Anif Jamaluddin (a), Lita Rahmasari (a*)
a) Faculty of Teacher Training and Education, Universitas Sebelas Maret, Jl. Insinyur Sutami No.36 A, Surakarta 57126, Indonesia
*lita[at]staff.uns.ac.id
b) Research Center for Biomass and Bioproducts, National Research and Innovation Agency, Bogor 16911, Indonesia
c) Department of Physics, University of Riau, Simpang Baru, Pekanbaru 28293, Indonesia
Abstract
Supercapasitors are a very promising in energy storage technology and it can be synthesized from biomass. Organic biomass is one alternative that can be used for innovation from supercapacitors, therefore the purpose of this study is to synthesize activated carbon from cassava skin biomass so that it can be applied as a supercapacitor. In this study, cassava skin biomass was used as the main ingredient in making activated carbon. The activated carbon produced is made in three stages, namely the material preparation stage, chemical activation and then physical activation. Potassium Hydroxide (KOH) is used as an activator in the chemical activation process, then in the physical activation process the method used is the pyrolysis method in a tube furnace with a temperature of 800C for 1 hour. Field Emission Scanning Electron Microscope with Energy Dispersive X-ray (FESEM-EDX), and the porosity calculation of activated carbon is used to determine the morphology, chemical composition, and pore volume size of the carbon material. The results of the analysis that have been obtained are then used as a basis for making supercapacitors from activated carbon. From the calculation results obtained a porosity value of 0.69 in activated carbon with a KOH activator of 40%. With this large porosity value, it is expected that activated carbon can be applied to supercapacitor electrodes with optimal results.
