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1.发明授权Electrochemical cell containing a water-wettable polytetrafluoroethylene separator 失效含水可溶性聚四氟乙烯分离器的电化学细胞
公开(公告)号：US3702267A
公开(公告)日：1972-11-07
申请号：US3702267D
申请日：1970-06-15
Applicant: DU PONT
Inventor： GROT WALTER GUSTAV
CPC classification number: H01M2/1653 , C08K3/22 , Y10S521/905 , C08L27/18
Abstract: POLYTETRAFLUOROETHYLENE IS PROVIDED CONTAINING FROM 20 TO 95% BY WEIGHT OF INORGANIC PARTICULATE SOLIDS WHICH ARE CHARACTERIZED BY A PARTICLE DIAMETER OF NO GREATER THAN 0.2 MICRON, BULK DENSITY NO GREATER THAN OF 0.25 GM./CM.3, AND A SPECIFIC SURFACE AREA OF AT LEAST 20 M.2/GM. THE PARTICULATE SOLIDS IMPART A HIGH DEGREE OF MICROPOROSITY AND WETTABILITY WHICH MAKES THE POLYMER USEFUL AS A FILTER OR AS AN ION PERMEABLE SEPARATOR IN ELECTROCHEMICAL CELLS.
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