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Title:
NONAQUEOUS SECONDARY BATTERY BINDER AND LIQUID DISPERSION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/012990
Kind Code:
A1
Abstract:
Provided is a binder used in an electrode layer or separator of a secondary lithium-ion battery, wherein the binder has little powder fall-off and, when used as a binder in an electrode layer, does not completely cover the surface of active material particles. The binder according to the present invention is a binder for a nonaqueous secondary battery and comprises aromatic polyamide fibrids, which swell but do not dissolve when an alkali metal salt and/or an alkali earth metal salt is present in an N-methyl-2-pyrrolidone solvent at a concentration of 1,000 ppm or less, and dissolve completely when the salt is present at a concentration of 10,000 ppm or more.

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Inventors:
AKAMATSU TETSUYA (JP)
Application Number:
PCT/JP2019/025896
Publication Date:
January 16, 2020
Filing Date:
June 28, 2019
Export Citation:
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Assignee:
TEIJIN LTD (JP)
International Classes:
H01M4/62; H01M4/13; H01M4/139; H01M50/443
Domestic Patent References:
WO2011040562A12011-04-07
WO2008013247A12008-01-31
WO2007125712A12007-11-08
WO2004099476A12004-11-18
Foreign References:
JP2012067425A2012-04-05
JP2012209181A2012-10-25
JP2006269305A2006-10-05
JPH08319420A1996-12-03
JP2011129410A2011-06-30
JP2000054224A2000-02-22
JP2016171056A2016-09-23
JP2012142244A2012-07-26
JP2007158163A2007-06-21
JP2006525391A2006-11-09
Other References:
See also references of EP 3823066A4
Attorney, Agent or Firm:
TAMEYAMA Taro (JP)
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