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公开(公告)号：US20220231377A1
公开(公告)日：2022-07-21
申请号：US17716776
申请日：2022-04-08
Applicant: JAPAN VILENE COMPANY, LTD.
Inventor： Hiroki CHO , Yoshinori SATO , Ayuka NOGUCHI , Akihiko KAWANO , Masanao TANAKA , Yasuhiro ITO
IPC: H01M50/44 , H01M50/429 , H01M50/449
Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 μm
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公开(公告)号：US20180315554A1
公开(公告)日：2018-11-01
申请号：US15771579
申请日：2016-11-04
Applicant: JAPAN VILENE COMPANY, LTD.
Inventor： Kengo NOGUCHI , Noriko MICHIHATA , Yoshinori SATO
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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公开(公告)号：US20200220137A1
公开(公告)日：2020-07-09
申请号：US16631408
申请日：2018-07-17
Applicant: JAPAN VILENE COMPANY, LTD.
Inventor： Hiroki CHO , Yoshinori SATO , Ayuka NOGUCHI , Akihiko KAWANO , Masanao TANAKA , Yasuhiro ITO
IPC: H01M2/16
Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 μm
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