期刊
MATERIALS TECHNOLOGY
卷 30, 期 A1, 页码 A14-A17出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/1753555714Y.0000000229
关键词
Activated carbon and graphene electrode; Supercapacitor; Slurry technique; LiPF6 electrolyte; Electrochemical analyses
资金
- UTeM Short-Term Prototype Grant [PJP/2013/FKP/PROTOTAIP/S01291]
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 120 degrees C 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 g(-1) using cyclic voltammetry at a scan rate of 1 mV s(-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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