Separator for alkali-zinc battery

Details Separator for alkali-zinc battery Separator for alkali-zinc battery

1993-12-10

1996-08-20

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

429145, H01M 216

Patent

active

055477798

ABSTRACT:
A separator for alkali-zinc battery comprising a microporous membrane having alkali resistance, a part of the porous membrane having highly persistent hydrophillic property and the remaining part having water repellent property. In the part having hydrophillic property, precipitation of ZnO can be controlled sufficiently because of its large persistency of hydrophilic property so that dendrite short-circuiting in the battery can be prevented satisfactorily. In the part having water repellent property, O.sub.2 gas is permeable well through it so that a decrease in capacity of battery can be avoided.

REFERENCES:
patent: 3216862 (1965-11-01), Parker et al.
patent: 3377203 (1968-04-01), Hans-Heinrich Mobious et al.
patent: 3427206 (1969-02-01), Scarpaville et al.
patent: 4287272 (1981-09-01), Machi et al.
patent: 4359510 (1982-11-01), Taskier
patent: 4804598 (1989-02-01), Jackovitz et al.
patent: 4957673 (1990-09-01), Schroeder et al.
Patent Abstracts of Japan vol. 13, No. 334 (M-855) (3682) Jul. 1989 and JP-A-01 110 904 (Isuzu Motors Ltd) 27 Apr. 1989.

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