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Title:
POWER STORAGE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/074559
Kind Code:
A1
Abstract:
According to one aspect of the present invention, a power storage element comprises an electrode body and a container that houses the electrode body. The electrode body is formed by layering a positive electrode that includes a positive electrode active material and a negative electrode that includes a negative electrode active material with a separator therebetween. The air permeability of the separator is at least 65 sec/100 cm3 but no more than 195 sec/100 cm3, and the ratio of the thickness of the electrode body during discharge when the electrode body is not inserted in the container to the inside dimension of the container in the thickness direction of the electrode body is at least 91.3%.

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Inventors:
ITAKURA DAICHI (JP)
MATSUYOSHI TSUBASA (JP)
SOGO YASUHIRO (JP)
Application Number:
PCT/JP2022/039272
Publication Date:
May 04, 2023
Filing Date:
October 21, 2022
Export Citation:
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Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M10/04; H01G11/06; H01G11/52; H01M4/587; H01M10/0587; H01M50/489
Foreign References:
JP2021158109A2021-10-07
JPH08339818A1996-12-24
JP2002042866A2002-02-08
JP2021128843A2021-09-02
JP2004047332A2004-02-12
JPH10326627A1998-12-08
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