| 초록 |
Beta-alumina is well known as an efficient sodium ionic conductor that can be used as the solid electrolyte of sodium-sulfur batteries. Derivatives known as beta-alumina are generally found in materials of the type β-Al2O3 with the empirical formula of Na2O·11Al2O3, and in materials of the type β″-Al2O3 identified in the form Na2O·5Al2O3. β″-Al2O3 contributes to the higher ionic mobilities than β-Al2O3 because of the different crystalline structure between two types. Thus, in this study, Na+-beta-aluminas were synthesized by two forming methods and each specimen was characterized by XRD(x-ray diffraction), SEM(scanning electron microscope) and PSA(particle size analyzer). |
