Manufacture of electrochemical high temperature cells

Details Manufacture of electrochemical high temperature cells Manufacture of electrochemical high temperature cells

1981-08-10

1984-05-08

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

296231, 264 464, 264 49, 429112, B29D 2700

Patent

active

044473761

ABSTRACT:
In the manufacture of cells, e.g. of the system Li-Al/LiCl-KCl/FeS.sub.x, the finely divided raw materials for the electrodes and for an included ceramic separator are respectively mixed individually with the electrolyte salt, as well as with a synthetic plastic which is decomposable without residue under heat. The mixtures are rolled into plates, and the plates are heated above the decomposition temperature of the plastic after assembly. The plastic is preferably a polyhydrocarbon such as polyisobutylene and is preferably introduced by means of a solvent. It makes the powder mixtures plastifiable and suitable for rolling. This makes it possible to produce ceramic separators, which are fundamentally composed only of loose particle accumulations, in the form of plates of uniform structure and strength and to handle these in the same way as electrode plates during cell assembly.

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