| 초록 |
All-solid battery research is active in battery-related companies around the world. In particular, the replacement of conventional lithium batteries in the EV(Electrochemical Vehicle) field can reduce the BMS(battery management system) parts for safety, thereby increasing the internal capacity of the battery by adding more catohde materials. Currently, research on sulfide series with excellent conductivity and electrochemical stable oxide series is active in the field of all-solid batteries. In addition, according to prior research by Professor Orimo of Japan, LiBH4 was found to have a compliance ionic conductivity of 10–3 S/cm through the deformation from high temperatures to hexagonal structures, suggesting the possibility of research of all-solid batteries of hydride series. However, since Li-ion batteries are generally used in the temperature region between -20℃ and 60℃, the temperature of 383K, which changes to the Hexagonal structure, is not suitable for the temperature conditions in which batteries are used. Therefore, the ion conductivity at room temperature should be measured to determine whether it can be commercialized or not. In this experiment, electrochemical impedance spectroscopy of the three hydrogen compounds LiBH4, LiH, and LiAlH4 was typically performed. The temperature was carried out under 300K conditions and their measurements were compared. |
