Alkaline battery, composite separator therefor

Details Alkaline battery, composite separator therefor Alkaline battery, composite separator therefor

1981-05-22

1982-11-30

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

429251, 429254, H01M 216

Patent

active

043616321

ABSTRACT:
A dual function, composite absorber/barrier battery separator for alkaline cells is comprised of a moderately cross-linked polyvinyl alcohol film and a flexible, fibrous and wettable absorber web, the film being semipermeable to electrolyte flow. The film is mechanically bonded to a top surface of the web in a manner so as to minimize the delays of transitions from hydrodynamic flow to diffusional flow through the separator during cell operation.
The invention also includes the method of making the composite separator.

REFERENCES:
patent: 3951687 (1976-04-01), Takamura et al.
patent: 4037033 (1977-07-01), Takamura et al.
patent: 4109066 (1978-08-01), Dick et al.
patent: 4154912 (1979-05-01), Philipp et al.
patent: 4218280 (1980-08-01), Philipp et al.
patent: 4220693 (1980-09-01), Di Palma et al.

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