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Electrochemical performance of activated carbon and graphene based supercapacitor

Mohd Abid, Mohd Asyadi Azam and raja seman, raja noor amalina and Abdul Manaf, Nor Syafira (2015) Electrochemical performance of activated carbon and graphene based supercapacitor. Materials Technology, 30 (A1). A14-A17. ISSN 1066-7857

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: Activated carbon and graphene electrode, Supercapacitor, Slurry technique, LiPF6 electrolyte, Electrochemical analyses
Subjects: Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: Dr Mohd Asyadi 'Azam Bin Mohd Abid
Date Deposited: 03 Mar 2015 05:26
Last Modified: 28 May 2015 04:37
URI: http://eprints.utem.edu.my/id/eprint/14223

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