Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8075813 | Energy | 2015 | 12 Pages |
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 gâ1, 196 F gâ1, 11 F gâ1, and 12 F gâ1, respectively. The irradiation dose of 5 kGy appears to be optimum and produces a specific power and specific energy of 236 W kgâ1 and 5.45 W h kgâ1, respectively, representing 34% and 60% increases over ACM electrodes prepared from non-irradiated GMs.
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Physical Sciences and Engineering
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Energy (General)
Authors
Najah Syahirah Mohd Nor, Mohamad Deraman, Ramli Omar, Awitdrus Awitdrus, Rakhmawati Farma, Nur Hamizah Basri, Besek Nurdiana Mohd Dolah, Nurul Fatin Mamat, Baharudin Yatim, Mohd Norizam Md Daud,