Primary electrochemical cell

Details Primary electrochemical cell Primary electrochemical cell

1975-09-18

1977-11-29

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

429164, 429178, 429194, 419218, H01M 6114

Patent

active

040606686

ABSTRACT:
A primary electrochemical cell is described in which a novel granular cathode material is utilized. The cathode is formed from about 40 to 99 weight percent of carbon black, at least 1 weight percent of a mechanical binder which is inert in the primary electrochemical cell and the remainder thereof is graphite. The cathode material may be formed by mixing the individual components together with a quantity of a suitable liquid to form a uniform slurry. The slurry is then dried at room temperature to remove the liquid. The dried mixture is crumbled into fine particles. The particles are cured at an elevated temperature to stabilize the mechanical binder. The resulting material when utilized as the cathode material of a primary electrochemical cell provides a porous carbon structure of high surface area in which a network of large channels exists for continual diffusion of electrolytic solution to the carbon cathodic particles throughout the entire volume of the cell cathode regardless of the cell size.

REFERENCES:
patent: 3510353 (1970-05-01), McHenry
patent: 3676222 (1972-07-01), Deibert
patent: 3796606 (1974-03-01), Lehmann et al.
patent: 3870565 (1975-03-01), Bonnemay et al.
patent: 3922174 (1975-11-01), Heller

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