| 摘要 |
An excellent stable sodium-sulfur cell having a high mechanical strength and a very long life is provided. The cell eliminates formation of cracks in a joining portion of the solid electrolyte tube (1) and the insulative ring (1) of the cell with the aid of a solder glass (9) filled in a gap between the solid electrolyte tube and the insulative ring, preferably with the aid of a tapered portion (11a) formed at at least one of the solid electrolyte tube and the insulative ring, thereby to completely obviate a direct reaction of active substances of the positive electrode and the negative electrode, overheat and destruction of the cell. The sodium-sulfur cell, comprises a solid electrolyte tube (1), an insulative ring (2), a gap of 100-500 mu m formed between the solid electrolyte tube and the insulative ring, and a solder glass (9) filled in the gap for joining the insulative ring to the solid electrolyte tube. |
