RGO/MgO hybrid nanocomposites with high specific capacitance |
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Authors: | Pradip Sekhar Das Suvajit Bakuli Indranil Biswas Awadesh Kumar Mallik Arjun Dey Smita Mukherjee Jiten Ghosh Anoop Kumar Mukhopadhyay |
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Affiliation: | 1. Advanced Mechanical and Materials Characterization Division, CSIR-Central Glass and Ceramic Research Institute (CGCRI), Kolkata 700032, India;2. Material Characterization and Instrumentation Division, CSIR-Central Glass and Ceramic Research Institute (CGCRI), Kolkata 700032, India;3. Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute (CGCRI), Kolkata 700032, India;4. Thermal Systems Group, ISRO Satellite Centre, Vimanapura Post, Bangalore 560017, India |
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Abstract: | A scalable, cost effective synthesis of reduced graphene oxide (RGO)-magnesium oxide (MgO) hybrid nanocomposite (RGOMOHNC) is reported in the present work. The process involves an in-situ sonication method in aqueous medium at room temperature e.g., 30 °C. The as synthesized graphene oxide (GO) and RGOMOHNC powders are characterized by the XRD, FESEM, TEM, FTIR, RS and XPS techniques. The results indicate that in-situ growth of 20–30 nm MgO nanoparticles effectively increases the graphitic nature of the layered RGO microstructure. The experimentally measured cyclic voltammetry (CV) plots show that the specific capacitance of the RGOMOHNC powders is three orders of magnitude higher than that of the GO powders. A mechanism of RGOMOHNC formation has been proposed. |
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Keywords: | Nanocomposites RGO/MgO Spectroscopy Electrodes |
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