SEPARATOR FOR ELECTRIC DOUBLE LAYER CAPACITOR

    公开(公告)号:US20180315554A1

    公开(公告)日:2018-11-01

    申请号:US15771579

    申请日:2016-11-04

    CPC classification number: H01G11/52

    Abstract: The object of the present invention is to realize a separator that has excellent thermal stability in size, shape, and the like even in a high temperature environment. The separator comprises a nonwoven fabric obtained by subjecting a nonwoven fabric consisting of homo-PAN fibers to a flame proofing treatment in a temperature range of 210° C. to 300° C., wherein an ID/IN value, which is a ratio of an absorption peak intensity ID of a carbon double bond-derived region (1580-1610 cm−1) of the homo-PAN nonwoven fabric to an absorption peak intensity IN derived from a nitrile group (2240 cm−1), as determined by infrared absorption spectroscopy, is 0.07 or more; and wherein a fiber shape and size are stably maintained after immersion for 30 minutes in an electrolytic solution containing propylene carbonate at 140° C.

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