Method for dehydrating manganese dioxide

Details Method for dehydrating manganese dioxide Method for dehydrating manganese dioxide

1986-05-22

1987-05-05

Hearn, Brian E.

Metal working

Method of mechanical manufacture

Electrical device making

429224, 429194, 423 49, 423605, H01M 614

Patent

active

046620656

ABSTRACT:
Method for the reactive dehydration of manganese dioxide. Dehydration is achieved by contact with a fluid desiccant (dehydrating agent) which reacts with water bound to manganese dioxide. Preferably, a gaseous product or a low boiling point liquid which easily produces vapors is formed. The manganese dioxide is then removed from the fluid desiccant and any adhering dessicant fluid and volatile reaction products are removed from the manganese dioxide under vacuum. Especially preferred for use as the dehydrating agent is thionyl chloride. The present invention is particularly suitable for dehydrating manganese dioxide to be used as electrodes in lithium batteries.

REFERENCES:
patent: 3927046 (1975-12-01), van der Broek et al.
patent: 4264689 (1981-04-01), Moses
patent: 4401641 (1983-08-01), Albizzati et al.
patent: 4408077 (1983-10-01), Sestanj et al.
patent: 4499310 (1985-02-01), Fung et al.
patent: 4608753 (1986-09-01), Flerscher

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