| 摘要 |
PURPOSE:To achieve good discharge performance by arranging insulation areas and conductive areas alternately over the entire circumference on the surface of solid electrolyte thereby facilitating dispersion of sodium polysulfide to the portion other than the conductive section of solid electrolytic tube. CONSTITUTION:A solid electrolytic tube 5 made of selective ion conductivity having closed lower end and open upper end is provided on the outercircumference of cell in storing area of negative electrode active material or sodium. An area 12 where insulation area and conductive area will exist alternately is provided on the outercircumference at the outside of the electrolytic tube 5. A porous conductive material 10 such as a carbon mat impregnated with sulfur is provided on the outercircumference of said area 12 while metallic positive electrode container 4 is provided at the outside of the conductive member 10. Consequently, dispersion of sodium polysulfide is facilitated resulting in considerable improvement of initial discharge performance. |
