Nano composite foam layer of CuO/graphene oxide (GO) for high performance supercapacitor

• Published in: Synthetic metals 2018-10, Vol.244, p.10-14
• Main Authors: Sheikhzadeh, M., Sanjabi, S., Gorji, M., Khabazian, S.
• Format: Article
• Language: English
• Subjects: Chemical synthesis; Copper; Copper oxide; Copper oxides; Electrodeposition; Electrophoretic deposition; Emission analysis; Energy storage; Field emission; Foam structure; Graphene; Graphene oxide; Morphology; Nano composite; Nanocomposites; Phase transitions; Plating; Porosity; Solid phases; Supercapacitor; Supercapacitors; Transition metal oxides; Transition metals; X-ray diffraction
• ISSN: 0379-6779; 1879-3290
• DOI: 10.1016/j.synthmet.2018.06.009

•Combination of copper oxide foam and GO layer by EPD provides a good design strategy for high-performance energy storage device.•The supercapacity of the composite film was studied with various GO morphology.•Specific capacity of CuO foam layer has been improved by amounts of 72%, 49% and 40% for EPD time deposition of 1, 3 and 7 min of GO, respectively. In this study, a facile and reproducible method has been developed to synthesize a nano composite foam layer of CuO/ graphene oxide (GO) intended for supercapacitor applications. GO particles were deposited on elecroplated CuO foam layers through electrophoretic deposition (EPD). The results showed that by varying EPD time (1, 3, 7 min), the degree of coverage of the foam layer with GO changes. This makes it feasible to manipulate the specific capacity of (Csp) CuO foam layers (238.3 F.g−1). It was shown that the specific capacity of the foam layer has been improved by amounts of 72%, 49% and 40% for EPD time deposition of 1, 3 and 7 min of GO, respectively.The results suggest a new versatile design to enhance super capacity and energy storage properties in conventional transition metal oxides. Morphology, phase structure, porosity and surface area of synthesized structures were investigated by field emission secondary electron microscopy (FE-SEM), X-ray diffraction (XRD) and BET (Brunauer– Emmett–Teller) approaches. Super capacity properties of the layers were from cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD) tests.