HERMETICALLY SEALED NICKEL-CADMIUM ACCUMULATOR Russian patent published in 2001 - IPC

FIELD: chemical current supplies. SUBSTANCE: accumulator has case, positive and negative plates with separator in-between, electrolyte that fills up all pores of plates and separator, and porous electricity conducting membrane abutting against negative plate and made of material catalytically active to electrical reducing reaction of oxygen such as carbon, silver, or carbon-activated nickel. Electricity conducting porous membrane is 30-60 mcm thick, its porosity is 25-35%, pore size is 0.3-30 mcm; in addition, total volume of pores measuring 10-30 mcm in this membrane is 1.05 to 1.3 times greater than similar volume of pores in cadmium plate. EFFECT: reduced charging time, enhanced stability to high rate of recharge. 3 cl, 4 tbl, 3 ex