Electrochemical performance of activated carbon and graphene based supercapacitor
A conventional but simple fabrication technique of activated carbon/graphene (AC/G) supercapacitor electrode will be presented in this work. The AC/G electrode was prepared using slurry technique from the mixture of AC and graphene powders, polytetrafluoroethylene as binder and N-methylpyrrolidone a...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | en |
| Published: |
Maney Publishing
2015
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/14223/1/mta413r_Published_version.pdf http://eprints.utem.edu.my/id/eprint/14223/ |
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| Summary: | A conventional but simple fabrication technique of activated carbon/graphene (AC/G) supercapacitor electrode will be presented in this work. The AC/G electrode was prepared using slurry technique from the mixture of AC and graphene powders, polytetrafluoroethylene as binder and N-methylpyrrolidone as solvent. The AC/G electrode was dried at 120uC in vacuum oven for 6 h followed by immersing in 1M lithium hexafluorophosphate electrolyte for another 6 h. The specific gravimetric capacitance of the electrode was calculated to be 19.45 F g21 using cyclic voltammetry at a scan rate of 1 mVs-1. Electrochemical behaviour including charge discharge and impedance characteristics confirmed the electrode’s ability as a possible active material for use in carbon based supercapacitor. |
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