| dc.creator |
Sirengo, Keith |
|
| dc.creator |
Jande, Yusufu A. |
|
| dc.creator |
Kibona, Talam Enock |
|
| dc.creator |
Hilonga, Askwar |
|
| dc.creator |
Muiva, Cosmas M. |
|
| dc.creator |
King'ondu, Cecil K. |
|
| dc.date |
2020-03-31T07:49:53Z |
|
| dc.date |
2020-03-31T07:49:53Z |
|
| dc.date |
2019-06-15 |
|
| dc.date.accessioned |
2022-10-25T09:24:49Z |
|
| dc.date.available |
2022-10-25T09:24:49Z |
|
| dc.identifier |
https://doi.org/10.1016/j.matchemphys.2019.04.059 |
|
| dc.identifier |
https://dspace.nm-aist.ac.tz/handle/20.500.12479/694 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/95801 |
|
| dc.description |
This research article published by Elsevier B.V., 2019 |
|
| dc.description |
Cobalt 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. |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
Elsevier B.V. |
|
| dc.subject |
Fish bladder activated carbon |
|
| dc.subject |
Specific capacitance |
|
| dc.subject |
Cobalt oxide |
|
| dc.subject |
Titanium dioxide |
|
| dc.title |
Fish bladder-based activated carbon/Co3O4/TiO2 composite electrodes for supercapacitors |
|
| dc.type |
Article |
|