| 초록 |
Supercapacitor is attractive as supplementary battery or major energy storage devices due to their high charging/discharge efficiency and semi-permanent cycle life. Existing Sr-doped LaxCoO3 has excellent electrical conductivity, structural stability and high capacitance but has low specific surface area. It is necessary to prepare Sr-doped LaxCoO3 with high specific surface area for supercapacitor application. In this study, hydrothermal synthesis method was used to synthesize materials by using aqueous solution under high temperature and pressure, was controlled shape and composition by reaction temperature and time. Accordingly, Sr-doped LaxCoO3 is prepared the perovskite structure controlled by reaction time, so that can be observed the transition of specific surface area and morphology of as-prepared Sr-doped LaxCoO3. Preparation of Sr-doped LaxCoO3 perovskite oxide can be used active electrode material for supercapacitor. |
