| http://www.w3.org/ns/prov#value | - What is claimed is: l. [n a battery comprising at least one electrolytic cell, said cell including an anode and a cathode disposed in an electrolyte said anode and cathode separated in said electrolyte by a battery separator the improvement comprising the battery separator, said separator comprising a hydrophobic, microporous polymeric film characterized by a reduced bulk density compared to the b
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