Structure of positive plate of enclosed type battery

Details Structure of positive plate of enclosed type battery Structure of positive plate of enclosed type battery

1980-06-06

1982-04-13

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

49218, 429224, H01M 400

Patent

active

043248284

ABSTRACT:
A positive plate composite agent consisting of a mixture of manganese dioxide, carbon powder and polytetrafluoroethylene powder is press-molded at a pressure in the range of 1 to 5 t/cm.sup.2. The resulting molded article is then pulvertized into massive particles having a particle size ranging from 0.03 to 15 mm.sup.3. The massive particles are then press-molded into a positive plate having a predetermined shape at a pressure in the range of 0.2 to 1 t/cm.sup.2.
There is thus obtained a positive plate of an enclosed type battery which comprises a portion consisting of the compactly formed massive particles of the positive plate composite agent and a portion consisting of the coarsely formed small particles of the composite agent interposed between the massive particles so as to define paths or voids for the passage of an electrolyte.

REFERENCES:
patent: 1272406 (1918-07-01), Ellis
patent: 1484918 (1924-02-01), Wilker
patent: 3242013 (1966-03-01), Mehne et al.
patent: 4060668 (1977-11-01), Goebel
patent: 4172183 (1979-10-01), Ruetschi
patent: 4197366 (1980-04-01), Tamura et al.

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