SODIUM-SULFUR CELL

PURPOSE:To smoothly supply sodium to the surface of a solid electrolytic tube by setting up a cylindrical sodium support, made up of wrapping the circumference of a metallic wick and its sintered body with an outer cover having conductivity, besides a lot of holes, so as to go along an inner circumference of the solid electrolytic tube. CONSTITUTION:A sodium support 6 uses a cylindrical conductive wire gauze 7 in dimensions closely insertable along the inner circumference of a solid electrolytic tube 5 as an outer cover having conductivity and a lot of holes, and it is closely formed by a stainless wick of the specified thickness compressedly formed in the inner circumferential part. The sodium support 6 is closely inserted along the inner circumference of the solid electrolytic tube 5, while the conductive gauze 7 comes into contact with the solid electrolytic tube 5, and solidum N is impregnated in the sodium support 6 at the inside. The sodium N in the sodium support 6 is decreased by discharge, but the sodium N charged in a space between the sodium support 6 and a cathode-ray tube 9 is permeated up in the sodium support 6 even if its level comes down. With this constitution, the sodium is smoothly feedable to the surface of the solid electrolytic tube.