Solid-phase electrochemical reduction of graphene oxide films in alkaline solution
1 Department of Chemistry, University Malaya, Kuala Lumpur 50603, Malaysia
2 Nanotechnology & Catalysis Research Centre, Institute of Postgraduate Studies, University Malaya, Kuala Lumpur 50603, Malaysia
3 Department of Mechanical Engineering, Faculty of Engineering, University Malaya, Kuala Lumpur 50603, Malaysia
4 Department of Chemistry, University of Farhangian, Tehran 15916, Iran
Nanoscale Research Letters 2013, 8:397 doi:10.1186/1556-276X-8-397Published: 24 September 2013
Graphene oxide (GO) film was evaporated onto graphite and used as an electrode to produce electrochemically reduced graphene oxide (ERGO) films by electrochemical reduction in 6 M KOH solution through voltammetric cycling. Fourier transformed infrared and Raman spectroscopy confirmed the presence of ERGO. Electrochemical impedance spectroscopy characterization of ERGO and GO films in ferrocyanide/ferricyanide redox couple with 0.1 M KCl supporting electrolyte gave results that are in accordance with previous reports. Based on the EIS results, ERGO shows higher capacitance and lower charge transfer resistance compared to GO.