Process for preventing electrical storage cell capacity loss

Details Process for preventing electrical storage cell capacity loss Process for preventing electrical storage cell capacity loss

1986-02-07

1987-07-28

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Fluid active material or two-fluid electrolyte combination...

429 27, 429 60, 429 48, H01M 1206

Patent

active

046831789

ABSTRACT:
A process for preventing electrical capacity loss during storage of a pressurized nickel-hydrogen electrical storage cell. An electrical precharge is applied to the positive electrode of the cell, so that discharge of the cell is negative electrode limited. In one approach, the cell is charged, while sealed, to a state of charge corresponding to a first gas pressure, and then the hydrogen pressure is reduced to a lower value, preferably about atmospheric. In another approach, a current is passed through the cell while the cell is unsealed and maintained at atmospheric gas pressure, until the cell reaches the desired state of charge.

REFERENCES:
patent: 3174878 (1965-03-01), Peters
patent: 3278334 (1966-10-01), Urry
patent: 3867199 (1975-02-01), Dunlop et al.
patent: 3959018 (1976-05-01), Dunlop et al.
patent: 3990910 (1976-11-01), Griner et al.
patent: 4174565 (1979-11-01), Kordesch
patent: 4275127 (1981-06-01), Ritterman et al.

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