| 초록 |
Recent achievements in homogeneous colloidal suspensions of chemically reduced graphene oxide platelets in various organic solvent systems have drawn particularly high interest due to the possibility for low-cost and high-volume production, as well as varios application such as Li-ion battery and supercapacitor applications. In particular, recent advancements in homogeneous colloidal suspensions of chemically modified graphene (CMG) sheets in various organic solvent systems have drawn particularly high interest due to the possibility of high volume production for such applications as transparent conductive films in displays and solar cells. As quantitative analysis on stability of colloidal suspensions of the CMG sheets in a wide range of solvents has yet to be thoroughly investigated, the Hansen solubility parameter along with Zeta potential measurements were used to evaluate the stability of colloidal suspensions of CMG sheets for a large number of solvents. The suspensions were studied as a function of the suspension concentration, as well as the different types of CMG that have been reduced using different reducing agents. Additionally, the lateral size of the exfoliated sheets fabricated under varying processing conditions were characterized using both the dynamic light scattering method as well as direct measurements made on a scanning electron microscope. |
