Explanation

It is a fast ion conductor capable of conducting sodium ions. Representative materials of such conductors include P-alumina, Nasicon, etc. β- Aluminum oxide is a general term for a type of aluminate, with the general formula Sm2XA1203, where M can be a monovalent, divalent, or trivalent cation, and X is typically oxygen. In these compounds, when M is a monovalent cation, such as sodium ion, β- The electric conductivity of alumina is relatively high. Especially sodium- β- Alumina has the highest electric conductivity because sodium ions can migrate in the layered structure to form two-dimensional conductors. When the temperature exceeds 300 ° C, sodium- β- The sodium ion electric conductivity of alumina can reach 10S/cm. This makes it an important separator materials for high-energy energy storage equipment, such as sodium sulfur battery. In addition, it is also used for the purification of metallic sodium, electrolytic production of alkali metals, and sodium ion sensors. It has skeleton structure and is considered as ion conductor. Although its electric conductivity at high temperature is relatively low, about β- One fourth of aluminum oxide, but due to its corrosion resistance at high temperatures, it is mainly used for manufacturing applications such as sodium ion sensors.

Classification