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Title:
NON-WOVEN FABRIC FOR SEPARATOR OF NON-AQUEOUS ELECTROLYTE CELL, AND NON-AQUEOUS ELECTROLYTE CELL USING THE SAME
Document Type and Number:
WIPO Patent Application WO/1996/030954
Kind Code:
A1
Abstract:
A non-woven fabric for a non-aqueous electrolyte cell capable of providing a non-aqueous electrolyte cell, which has high adhesion with an electrode, does not cause breakage of a separator and deviation and gap between the electrode and the separator, has high cell processability such as windability on the electrode, does not cause internal short-circuit due to mutual contact of the electrodes resulting from shrinkage and combustion of the non-woven fabric even when the electrodes are heated due to external short-circuit, can prevent combustion of the cell, is free from pin holes, and has excellent electrolyte retaining property and electrolyte permeation property, and can provide a non-aqueous electrolyte cell having excellent current capacity, cell characteristics and cell preservation characteristics. The present invention provides also a non-aqueous electrolyte cell using the non-woven fabric. More concretely, the non-woven fabric for a non-aqueous electrolyte cell separator according to the present invention has a film thickness non-uniformity index Rpy of not greater than 1,000 mV or a center surface mean roughness SRa of not greater than 6 'mu'm in the full wave region measured by using a probe type three-dimensional surface roughness meter.

Inventors:
ASHIDA TETSUYA (JP)
TSUKUDA TAKAHIRO (JP)
Application Number:
PCT/JP1996/000859
Publication Date:
October 03, 1996
Filing Date:
March 29, 1996
Export Citation:
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Assignee:
MITSUBISHI PAPER MILLS LTD (JP)
ASHIDA TETSUYA (JP)
TSUKUDA TAKAHIRO (JP)
International Classes:
D04H1/54; D21H13/40; D21H13/46; D21H25/04; H01M50/414; H01M50/434; H01M50/437; H01M50/489; H01M50/491; D21H13/14; D21H13/18; D21H13/24; D21H13/26; D21H13/48; D21H15/10; H01M6/16; (IPC1-7): H01M2/16; H01M6/16; D21H13/40; D21H13/46; D04H1/54
Foreign References:
JPH0737571A1995-02-07
JPH0574440A1993-03-26
JPS5659456A1981-05-22
JPS5630256A1981-03-26
JPS55146872A1980-11-15
JPH02181364A1990-07-16
JPS52124138A1977-10-18
JPS6237871A1987-02-18
JPH0246649A1990-02-16
Other References:
See also references of EP 0834936A4
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