SODIUM SULFUR BATTERY

PROBLEM TO BE SOLVED: To provide a sodium sulfur batter that is suited for a power storage apparatus, an electric automobile and the like, can improve battery efficiency and increase a capacity, and is mechanically reliable. SOLUTION: In the sodium sulfur battery, liquid sodium 7 is accommodated in a negative electrode chamber 4 composed of the inside of a solid electrolyte bag pipe 1 and a negative electrode container 2. A positive electrode active substance 14 composed of sulfur or/and sodium polysulfide is accommodated in a positive electrode chamber 5 composed of the outside of the solid electrolyte bag pipe and a positive electrode container 3. A collector 11 in a cylindrical shape or the like is provided along the outside of the solid electrolyte bag pipe. Then, a porous conductive material 12 or/and a porous material 13 is filled into the gap between the collector and the solid electrolyte bag pipe. In the sodium sulfur battery, the solid electrolyte bag pipe is inclined in a horizontal direction or in an oblique direction, and the side lower section or/and the side upper section of the collector and the positive electrode container are brought into contact or joined with each other. COPYRIGHT: (C)2004,JPO