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Title:
SEPARATOR FOR ELECTROCHEMICAL ELEMENT AND ELECTROCHEMICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2017/170065
Kind Code:
A1
Abstract:
A separator for an electrochemical element for holding an electrolytic solution is interposed between a pair of electrodes, said separator comprising a nonwoven fabric formed by depositing fibers in a sheet configuration. The frequency of nonwoven fabric hole diameters measuring 0.05-1.00 µm is at least 90% for all holes, the frequency of the modal hole value is at least 60% with respect to the frequency for all sections, and the frequency of the range of the modal hole value ±10% is at least 75% with respect to the frequency for all sections. It is thereby possible to provide: a separator for an electrochemical element that has adequate shielding properties and reduced thickness, and has particularly exceptional wettability with respect to the electrolytic solution, liquid retention properties, and thermal resistance; and an electrochemical element in which the separator is used.

Inventors:
FUKUNAGA Ryoichi (648 Hirooka-kami, Haruno-cho Kochi-sh, Kochi 95, 〒7810395, JP)
WADA Norihiro (648 Hirooka-kami, Haruno-cho Kochi-sh, Kochi 95, 〒7810395, JP)
TANAKA Kosuke (648 Hirooka-kami, Haruno-cho Kochi-sh, Kochi 95, 〒7810395, JP)
IGAWA Atsushi (648 Hirooka-kami, Haruno-cho Kochi-sh, Kochi 95, 〒7810395, JP)
Application Number:
JP2017/011532
Publication Date:
October 05, 2017
Filing Date:
March 22, 2017
Export Citation:
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Assignee:
NIPPON KODOSHI CORPORATION (648 Hirooka-kami, Haruno-cho Kochi-sh, Kochi 95, 〒7810395, JP)
International Classes:
H01G9/02; H01G11/52; H01M2/16
Attorney, Agent or Firm:
MARUYAMA Yukio (2nd Floor Office Toranomon Ichi Building, 1-5-8 Toranomon, Minato-k, Tokyo 01, 〒1050001, JP)
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