Hydrophilized separator material of nonwoven fabric for electroc

Details Hydrophilized separator material of nonwoven fabric for electroc Hydrophilized separator material of nonwoven fabric for electroc

1993-10-05

1995-03-28

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

429144, 429247, 429248, H01M 214

Patent

active

054015944

ABSTRACT:
The subject invention relates to a hydrophilized separator material of nonwoven fabric that is useful for electrochemical cells having an aqueous alkaline electrolyte. The nonwoven fabric comprises a mixture of lower-melting and higher-melting polyamide and/or polyolefin fibers that are compressed together in a sealed manner by softening the lower-melting fiber portions with pressure and heat. The separator material is hydrophilized by moistening it with 0.5 to 7% by weight, with respect to the dry weight of the nonwoven fabric, of deionized water. The subject invention further relates to the method for hydrophilizing the nonwoven fabric.

REFERENCES:
patent: 4091181 (1978-05-01), Merritt, Jr.
patent: 4359510 (1982-11-01), Taskier
patent: 4378414 (1983-03-01), Furukawa et al.
patent: 4650730 (1987-03-01), Lundquist et al.
Patent Abstracts of Japan, vol. 17, No. 473 (E-1423) 27 Aug. 1993 & JP-A-05 114 397 (Sanyo Electric Co. Ltd.) 7 May 1993.
DataBase WPI Week 8203, Derwent Publications Ltd., London, GB; AN-8204521E & JP-A-56 156 668 (Tokyo Shibaura Elec. Ltd.) 3 Dec. 1981.

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