Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Patent
1980-03-03
1981-02-24
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer, spacer or materials for use therewith
296235, 427 58, H01M 216
Patent
active
042528780
ABSTRACT:
Hydrophobic polymeric separators are made wettable to electrolytic cell fluids by a post-manufacturing process of treating with fluorinated surface-active agents. The application of a hydrophilic film of fluorosurfactant onto separator surfaces followed by drying renders the separator permanently wettable. The hydrophilic surfaces rendered inert by drying are reactivated in-situ after installation of the separator by contacting the separator surfaces with heated aqueous solution. The pre-installation process provides a convenient means for shipping fully manufactured separators and for their storage by users until actually needed. From an operational standpoint, the pre-installation process eliminates fouling of the cell with foam occurring with conventional in-situ wetting procedures.
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Zonyl.RTM. Fluorosurfactants, E. I. DuPont Product Bulletin, Mar. 1977.
Cook, Jr. Edward H.
Keller Ursula I.
Lazarz Christine A.
Casella Peter F.
Ellis Howard M.
Hooker Chemicals & Plastics Corp.
LeFevour Charles F.
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