Influence of gamma irradiation exposure on the performance of supercapacitor electrodes made from oil palm empty fruit bunches

Najah Syahirah Mohd Nor, Mohamad Deraman, Ramli Omar, Awitdrus,, Rakhmawati Farma, Nur Hamizah Basri, Besek Nurdiana Mohd Dolah, Nurul Fatin Mamat, Baharudin Yatim and Mohd Norizam Md Daud

Energy, 2015, vol. 79, issue C, 183-194

Abstract: Carbon-monolith electrodes for supercapacitors were prepared from GMs (green monoliths) made from pre-carbonized fibers of oil palm EFB (empty fruit bunches) and GMs of pre-carbonized EFB fibers exposed to gamma radiation at 5 kGy, 15 kGy, and 20 kGy. GMs and irradiated GMs were carbonized and activated to prepare ACM (activated-carbon-monolith) electrodes. The gamma radiation affected the pore structure of the ACM electrodes and the electrochemical performance of the supercapacitors; irradiation doses of 0 kGy, 5 kGy, 15 kGy and 20 kGy produced specific capacitances of 121 F g−1, 196 F g−1, 11 F g−1, and 12 F g−1, respectively. The irradiation dose of 5 kGy appears to be optimum and produces a specific power and specific energy of 236 W kg−1 and 5.45 W h kg−1, respectively, representing 34% and 60% increases over ACM electrodes prepared from non-irradiated GMs.

Keywords: Supercapacitor; Gamma irradiation; Carbon electrode; Specific power; Specific energy (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:79:y:2015:i:c:p:183-194

DOI: 10.1016/j.energy.2014.11.002

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