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dc.contributor.authorSirengo, Keith
dc.contributor.authorJande, Yusufu A.
dc.contributor.authorKibona, Talam Enock
dc.contributor.authorHilonga, Askwar
dc.contributor.authorMuiva, Cosmas M.
dc.contributor.authorKing'ondu, Cecil K.
dc.date.accessioned2020-03-31T07:49:53Z
dc.date.available2020-03-31T07:49:53Z
dc.date.issued2019-06-15
dc.identifier.urihttps://doi.org/10.1016/j.matchemphys.2019.04.059
dc.identifier.urihttps://dspace.nm-aist.ac.tz/handle/20.500.12479/694
dc.descriptionThis research article published by Elsevier B.V., 2019en_US
dc.description.abstractCobalt oxide/titanium dioxide/activated carbon (Co3O4/TiO2/Ac) composite was synthesized using simple sol-gel method before annealing at 300 °C. Fish bladder derived porous carbon used for the composite was synthesized by pyrolysis followed by chemical activation. Both scanning electron microscopy (SEM) and X-ray diffraction displayed Co3O4 and TiO2 phases well embedded onto the carbon matrices. Cyclic voltammetry in 6 M KOH electrolyte demonstrated that the composite has an excellent specific capacity of 946 Fg-1 for Co3O4/TiO2/Ac as compared to Co3O4/Ac, TiO2/Ac, and Ac with specific capacitances of 845, 340, and 308 F g−1, respectively at 5 mVs−1. Impedance spectroscopy reveals that the composite has good capacitive behavior with a series resistance of 0.6 Ω. Besides, Co3O4/TiO2/Ac maintains 89.7% of the initial capacitance after 2000 cycles. This study shows that the synergistic effect of the metal oxides and the carbon in the composite can enhance capacitance for practical supercapacitor applications.en_US
dc.language.isoenen_US
dc.publisherElsevier B.V.en_US
dc.subjectFish bladder activated carbonen_US
dc.subjectSpecific capacitanceen_US
dc.subjectCobalt oxideen_US
dc.subjectTitanium dioxideen_US
dc.titleFish bladder-based activated carbon/Co3O4/TiO2 composite electrodes for supercapacitorsen_US
dc.typeArticleen_US


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