Physical and Electrochemical Properties of Supercapacitor Electrodes Derived from Carbon Nanotube and Biomass Carbon

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dc.contributor.authorFarma, Rakhmawati
dc.contributor.authorDeraman, Mohamad
dc.contributor.authorAwitdrus
dc.contributor.authorTalib
dc.contributor.authorOmar, Ramli
dc.contributor.authorManjunatha
dc.contributor.authorIshak
dc.contributor.authorBasri, Nur Hamizah
dc.contributor.authorDollah, Besek Nurdiana Mohd
dc.date.accessioned2015-09-08T02:49:12Z
dc.date.available2015-09-08T02:49:12Z
dc.date.issued2015-09-08
dc.description.abstractGreen monoliths (GMs) were prepared from mixtures of KOH (5% by weight), carbon nanotubes (5%) and self-adhesive carbon grains (90%) from oil palm empty fruit bunch fibers. The GMs were carbonized up to 600, 700 and 800°C under an N2 gas environment, and activated by CO2 gas at 800°C for one hour to produce activated carbon monoliths (ACMs), designated as ACM6, ACM7 and ACM8, respectively. The characterization of the ACMs showed a notable effect of the carbonization temperature on the structure, microstructure, electrical conductivity and porosity of the ACMs. Consequently, three independent methods, galvanostatic charge-discharge, cyclic voltammetry and electrochemical impedance spectroscopy, used for the electrochemical characterization of supercapacitor cells fabricated using the ACMs as their electrodes, consistently found that the ACM7 and ACM8 cells have higher specific capacitance (77 Fg-1 and 85 Fg-1, respectively), specific energy (2.2 Wh kg-1 and 2.1 Wh kg-1, respectively) and specific power (156 W kg-1 and 161 W kg-1, respectively) compared to the ACM6 cell. These results suggest that carbonization should be performed at temperatures closer or equal to the activation temperature for the preparation of supercapacitor electrodes composed of biomass precursors.en_US
dc.description.sponsorshipInt. J. Electrochem. Sci., 8 (2013) 257 - 273en_US
dc.identifier.otherwahyu sari yeni
dc.identifier.urihttp://www.electrochemsci.org/papers/vol8/80100257.pdf
dc.identifier.urihttp://repository.unri.ac.id/xmlui/handle/123456789/7521
dc.language.isoenen_US
dc.subjectSelf-adhesive carbon grainsen_US
dc.subjectActivated carbon monolithen_US
dc.subjectCarbon nanotubeen_US
dc.subjectPorosityen_US
dc.subjectSupercapacitor electrodeen_US
dc.titlePhysical and Electrochemical Properties of Supercapacitor Electrodes Derived from Carbon Nanotube and Biomass Carbonen_US
dc.typeUR-Scientific Work Lectureren_US

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