Gas recombinant separator

Details Gas recombinant separator Gas recombinant separator

H - Electricity

01

M

18/541

H01M 2/16 (2006.01) D04H 1/42 (2006.01)

Patent

CA 1319233

ABSTRACT OF THE DISCLOSURE Described is a porous flexible sheet of about 96.5 to 99.5 weight percent amorphous precipitated silica and from about 0.5 to about 3.5 weight percent fibrillated, unsintered polymer, e.g., polytetrafluoroethylene. The sheet is useful as a separator in absorbed electrolyte gas recombinant batteries, e.g., lead-acid batteries. The sheet is prepared by subjecting a dry mixture of the silica and polymeric material, e.g., polytetrafluoroethylene, in the above proportions to mechanical shear blending forces to fibrillate the polymer and thereafter dry forming the resulting admixture into sheet form.

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