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Title:
NON-AQUEOUS SECONDARY BATTERY ELECTRODE BINDER, NON-AQUEOUS SECONDARY BATTERY ELECTRODE BINDER COMPOSITION, AND NON-AQUEOUS SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/138371
Kind Code:
A1
Abstract:
Provided is a binder for non-aqueous secondary battery electrodes, that effectively improves peel strength from a current collector of an electrode active material layer and can contribute to a reduction in the internal resistance of a battery and an improvement in cycle characteristics. This binder for non-aqueous secondary battery electrodes includes a copolymer (A) and a copolymer (B). The copolymer (A) has 11th to 13th structural units that are derived from: monomers (a1), (a2) that have an ethylenically unsaturated bond; and an internal cross-linking agent (a3). The copolymer (B) has, among all structural units, 5.0–98 mol%, 0.30–90 mol%, and 0.30–10 mol%, respectively, of 21st to 23rd structural units indicated by formulas (1)–(3).　Chemical formula 1 (In formula (2), R1 indicates a C1–6 alkyl group that may be branched. In formula (3), R2 indicates a group having an ethylenically unsaturated bond.)

Inventors:
KAWAHARA YUTA (JP)
IKEHATA RYOHSUKE (JP)
HORIKOSHI HIDEO (JP)
HANASAKI MITSURU (JP)
Application Number:
PCT/JP2021/046248
Publication Date:
June 30, 2022
Filing Date:
December 15, 2021
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
H01M4/62; C08F212/08; C08F220/10; C08G65/32; C08L25/04; C08L33/06; C08L71/02; H01M4/13; H01M4/139
Domestic Patent References:
WO2020137591A12020-07-02
Foreign References:
JP2018198199A2018-12-13
JPH09165420A1997-06-24
JP2012051999A2012-03-15
JP2017212090A2017-11-30
JP2013084502A2013-05-09
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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