Sealed lead acid batteries with porous polymer particles

Details Sealed lead acid batteries with porous polymer particles Sealed lead acid batteries with porous polymer particles

1993-12-23

1995-12-12

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

425215, H01M 414, H01M 1006

Patent

active

054748631

ABSTRACT:
The sealed lead acid battery comprises a positive and/or negative electrode made of an active material added with porous polymer particles having an average pore diameter of 0.05 to 10 .mu.m and a particle size of 0.1 to 0.8 mm. The additive amount of the porous polymer particles ranges from 0.2 to 3 wt. %. The active material may be incorporated with porous particles of 0.3 to 5 wt. % previously impregnated therein with sulfric acid. The resultant sealed lead acid battery has a high energy density and is superior in a high efficient discharge characteristic, a cycle life characteristic and a low temperature characteristic.

REFERENCES:
patent: 2177062 (1939-10-01), Gibbons et al.
patent: 2345035 (1944-03-01), Daily et al.
patent: 2866840 (1958-12-01), Dittman et al.
patent: 4238557 (1980-12-01), Shulte et al.
patent: 4548835 (1985-10-01), Takahashi et al.
patent: 4748093 (1988-05-01), Turner

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