Composite films for electrochemical devices
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United States of America Patent
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Jul 26, 2005
Grant Date -
Oct 16, 2003
app pub date -
Apr 16, 2002
filing date -
Apr 16, 2002
priority date (Note) -
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Abstract
Composite film articles and assemblies that include at least one layer of expanded fluoropolymer bonded to at least one thermoplastic sheet are fabricated using a method which can adjust the gas and liquid permeability of the composite film assemblies. These composite film articles and assemblies optionally have electroactive properties and a thin porous metallic overlayer that can serve as a current collector, and can be used in electrochemical devices such as air depolarized cells.
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