title: Preparation of highly porous binderless activated carbon electrodes from fibres of oil palm empty fruit bunches for application in supercapacitors.
abstract: Fibres from oil palm empty fruit bunches, generated in large quantities by palm oil mills, were processed into self-adhesive carbon grains (SACG). Untreated and KOH-treated SACG were converted without binder into green monolith prior to N2-carbonisation and CO2-activation to produce highly porous binderless carbon monolith electrodes for supercapacitor applications. Characterisation of the pore structure of the electrodes revealed a significant advantage from combining the chemical and physical activation processes. The electrochemical measurements of the supercapacitor cells fabricated using these electrodes, using cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge techniques consistently found that approximately 3h of activation time, achieved via a multi-step heating profile, produced electrodes with a high surface area of 1704m(2)g(-1) and a total pore volume of 0.889cm(3)g(-1), corresponding to high values for the specific capacitance, specific energy and specific power of 150Fg(-1), 4.297Whkg(-1) and 173Wkg(-1), respectively.
authors: School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
authors: R
authors: R
authors: Farma
authors: M
authors: M
authors: Deraman
authors: A
authors: A
authors: Awitdrus
authors: I A
authors: IA
authors: Talib
authors: E
authors: E
authors: Taer
authors: N H
authors: NH
authors: Basri
authors: J G
authors: JG
authors: Manjunatha
authors: M M
authors: MM
authors: Ishak
authors: B N M
authors: BN
authors: Dollah
authors: S A
authors: SA
authors: Hashmi
mesh_terms: D028023:Arecaceae / Q000737:chemistry*; D018533:Biomass; D002244:Carbon / Q000032:analysis / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry; D058266:Dielectric Spectroscopy; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D005638:Fruit / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide; D002244:Carbon; D009584:Nitrogen