Sodium-sulfur cell and method of joining solid electrolyte...

Details Sodium-sulfur cell and method of joining solid electrolyte... Sodium-sulfur cell and method of joining solid electrolyte...

H - Electricity

01

M

H01M 10/39 (2006.01) C04B 37/00 (2006.01) H01M 2/08 (2006.01)

Patent

CA 2053034

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 and the insulative ring of the cell with the aid of a solder glass filled in a gap between the solid electrolyte tube and the insulative ring, preferably with the aid of a tapered portion 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, an insulative ring, a gap of 100-500 µm formed between the solid electrolyte tube and the insulative ring, and a solder glass filled in the gap for joining the insulative ring to the solid-electrolyte tube.

Excellente cellule stable de sodium-soufre de grande résistance mécanique et de très longue durée. Cette cellule permet d'éliminer la formation de fissures dans une partie jointe du tube à électrolytes solides et de l'anneau d'isolement de la cellule, au moyen d'un verre de scellement remplissant un espace entre le tube à électrolytes solides et l'anneau d'isolement. Cela se fait de préférence à l'aide d'au moins une des parties effilées du tube à électrolytes solides et de l'anneau d'isolement, permettant de complètement prévenir une réaction directe de substances actives de l'électrode positif et de l'électrode négatif, ainsi qu'une surchauffe et la destruction de la cellule. La cellule de sodium-soufre est constituée d'un tube à électrolytes solides, d'un anneau d'isolement, d'un espace de 100 à 500 micropouces formé entre le tube à électrolytes solides et l'anneau d'isolement, ainsi que d'un verre de scellement remplissant l'espace pour joindre l'anneau d'isolement au tube à électrolytes solides.

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