Valve-regulated lead-acid cells and batteries and separators used in such cells and batteries
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United States of America Patent
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Jan 21, 2003
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N/A
app pub date -
Jan 18, 2000
filing date -
Jul 4, 1997
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Abstract
A valve-regulated lead-acid cell utilizes an absorptive glass mat separator having a glass fiber surface which is modified by treatment with at least one particular polymer, as by treatment with a polymer emulsion to coat at least part of the glass fiber surface and then sintering to dry the coating, the polymers including polyolefins, polytetrafluoroethylene, polyvinylchlorides, polyacrylonitriles, polyesters, amphiphilic block and graft copolymers, hydrophilic and amphiphilic nitrogen-containing polymers and polyorgano-silica compounds such as polysilanes and polysiloxanes.
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