title: Preparation of capacitor's electrode from cassava peel waste.
abstract: Cassava peel was used as the precursor for activated carbon-based electrodes which were then prepared by a combination of chemical and physical activation. The surface of the activated carbon was treated with the oxidative chemical agents, 98 wt.% H(2)SO(4), 65 wt.% HNO(3), and 30 wt.% H(2)O(2) solutions. The surface modification had no significant effect on the specific surface area, but greatly influenced the surface chemistry of the carbons. The presence of oxygen-containing groups increased the polarity and hydrophilicity of activated carbon, and thus improved the performance of the activated carbon-based electrode. As a result, the specific capacitance of the HNO(3) modified AC-electrode reached 264.08F/g, an increase of 72.6% compared to the original one. The results indicate that cassava peel waste can potentially be applied as a raw material for the production of low cost-high performance activated carbon electrode materials for Electric Double Layer Capacitors (EDLCs).
authors.affiliation: Department of Chemical Engineering, Widya Mandala Surabaya Catholic University Kalijudan 37, Surabaya 60114, Indonesia.
authors.forename: Andrian Evan
authors.initials: AE
authors.lastname: Ismanto
authors.forename: Steven
authors.initials: S
authors.lastname: Wang
authors.forename: Felycia Edi
authors.initials: FE
authors.lastname: Soetaredjo
authors.forename: Suryadi
authors.initials: S
authors.lastname: Ismadji
mesh_terms: D004566:Electrodes; D002365:Manihot; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared