| 초록 |
Fe3O4-reduced graphene oxide (rGO) composite has recently become a hot topic in various fields such as MRI, drug delivery, battery, and supercapacitor due to its synergistic effects between them. Here we developed a simple and cost-effective method assisted by ultrasound where hydrophobic nanoparticle forms hydrophobic bonding to hydrophobic part on graphene oxide. And we applied an electrospray method, which is a deposition technique that can be applied in industry due to low-cost and high-speed processing, for fabricating supercapacitor electrodes using Fe3O4- rGO composite as a binder-free method. Chemical structure of the composite was confirmed by UV-vis spectrometer, FTIR, and Raman scattering, and its morphology was monitored by TEM, SEM, and XRD. We tested the stability of the composite by galvanostatic charge/discharge and defined the specific capacitance. The nanocomposite film could be a promising candidate for high performance energy storage application. |
