HIGH-TEMPERATURE SODIUM SECONDARY BATTERY AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a high-temperature sodium secondary battery suitably used for a system such as a power storage device and an electric vehicle and to provide its manufacturing method. SOLUTION: Inside a negative electrode chamber of a high-temperature sodium secondary battery, gases such as a hydrogen gas, a nitrogen gas and an inactive gas are received together with sodium in the inside and outside of a sodium container 5 with an opening part formed in its lower part or bottom part, and the pressure of the gas present in the space outside the sodium container is controlled through a sealing hole formed in a negative electrode container 2 so as to be directly coupled to the.space outside the sodium container 5.