| 초록 |
The battery performance is directly related to the structural properties of electrode. In this study, we have adopted Janus-structured thin films consisting of Fe3O4 nanoparticles (ION) and poly-dopamine (PDA) on each side of the graphene oxide (GO) sheet. ION is known as promising conversion-type anode materials which leads to improve electrical conductivity and capacitance. In addition, dopamine functions as a binder to prevent the detachment of anode material. The thin film was deposited by the Langmuir-Schaefer (LS) technique, which is able to deposit Janus GO sheet in large area and also control the morphology of ION/GO in nano-scale. The structure of film was characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM) and grazing-incidence small-angle x-ray scattering(GISAXS). From the electrochemical results, we found that this ION/GO/PDA composite improved the capacitance and cycling stability for rechargeable lithium-ion batteries (LIBs). |
