Designing of Fe3O4 Supported Reduced Graphene Oxide Based 1-D Copper(II) polymeric material: A Comparative Study on High- Performance supercapacitive Behaviour

Abstract

Exploring and invading into the electrochemical activities of Schiff base transition metal complexes and its usage as energy storage devices, namely electrical double layer capacitors (EDLCs) has drawn much attention owing to the day-by-day evolving demand of energy storage in a more practical and convenient way. With this aim, we have synthesized and compared the electrochemical activity of a dicyanamide bridged 1D Cu2+-coordination polymer (CuL-dca) using N,N,O donor ligand prepared from 2-pyridylethanamine and 5-bromo-2-hydroxybenzaldehyde with its heterogeneous nanocomposite on Fe3O4 decorated reduced graphene oxide. The heterogenization was carried out by anchoring CuL-dca onto magnetic Fe3O4 nanomaterials supported by reduced graphene oxide bed (rGO@Fe3O4@CuL-dca) followed by its complete characterization by different physiochemical techniques like Single crystal X-ray diffraction, FT-IR, UV-Vis spectroscopy, ESI-MS spectrometry, TEM, EDX, PXRD and none the less XPS spectroscopy. To the best to the knowledge, this is the first report on the rGO@Fe3O4@CuL-dca heterostructure, which exhibits superior supercapacitor performance with a specific capacitance of 574 Fg at 5 mV/s in a half-cell and 270 F/g at 50 mA/g in a symmetric full-cell configuration.