Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Patent
1993-04-01
1994-11-08
Willis, Jr., Prince
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer, spacer or materials for use therewith
429251, 429254, 429129, 429131, 429142, H01M 214
Patent
active
053625820
ABSTRACT:
A battery separator composed of a microporous sheet product having first and second major surfaces and a thickness of less than about 50 mils, formed from a uniform mixture of a polymer and a filler or a polymer and a structure enhancing agent and having a porous sheet embedded between the first and second major surface. The porosity of the sheet product is at least about 50 volume percent having a pore distribution such that the nominal pore diameter increases from each major surface towards the interior central portion of the sheet product's thickness.
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Avtges James A.
Chang Victor S.
Hartwig Richard C.
Kung James K.
Laccetti Anthony J.
Nuzzolillo M.
Troffkin Howard J.
W.R. Grace & Co.-Conn.
Willis Jr. Prince
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