Asea Brown Boveri Ag

Brown, Boveri & Cie Ag

Roland Bauer

Wilfried Fischer

Wilhelm Haar

Bernd Hartmann

A process for the disposal of rechargeable storage cells based on sodium and sulphur includes embedding each storage cell in a wax-like, solid material and then opening the storage cells. After opening, the sodium is first removed from the storage cell. Subsequently, the storage cell is opened further, and reaction products, a second reactant and components of the storage cell are taken out for re-utilization or processing to form waste materials that are free of pollutants and capable of disposal.

Process for the disposal of storage cells

An electrochemical storage cell or battery with one anode chamber containing molten alkali metal as the anolyte and one cathode chamber containing sulfur-containing catholyte substance, the anolyte and catholyte separated by an alkali-ion-conducting solid electrolyte. The cathode chamber is bounded by a cellwall having a protective layer of a light weight metal also serving as a current collector. The light weight metal in the regions in contact with the catholyte is coated with a metallic alloy which under conditions of operation has certain properties of adhesion, conduction, resistance, corrosion and solubility.

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Hemsbach, Germany

Roland Bauer