Title:
BINDER FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODES
Document Type and Number:
WIPO Patent Application WO/2024/024772
Kind Code:
A1
Abstract:
The present invention provides a binder for nonaqueous electrolyte secondary battery electrodes, the binder being capable of suppressing the degree of electrode expansion. The present invention uses, as a binder for nonaqueous electrolyte secondary battery electrodes, a crosslinked polymer that contains a carboxyl group, or a salt of this crosslinked polymer. The crosslinked polymer or a salt thereof has a volume-based median diameter of 0.60 µm to 1.0 µm as measured in an acetonitrile medium, while having a degree of swelling in water of 25 to 40 at a pH of 8.
Inventors:
YOSHIMORI KENICHI (JP)
NAKANO TOMOKO (JP)
SAITO NAOHIKO (JP)
HASEGAWA TAKASHI (JP)
SAKITANI NOBUHIRO (JP)
MISHIMA KEI (JP)
NAKANO TOMOKO (JP)
SAITO NAOHIKO (JP)
HASEGAWA TAKASHI (JP)
SAKITANI NOBUHIRO (JP)
MISHIMA KEI (JP)
Application Number:
PCT/JP2023/027156
Publication Date:
February 01, 2024
Filing Date:
July 25, 2023
Export Citation:
Assignee:
TOAGOSEI CO LTD (JP)
PANASONIC ENERGY CO LTD (JP)
PANASONIC ENERGY CO LTD (JP)
International Classes:
H01M4/62; C08F220/06
Domestic Patent References:
| WO2019155773A1 | 2019-08-15 | |||
| WO2021241404A1 | 2021-12-02 | |||
| WO2022131239A1 | 2022-06-23 | |||
| WO2021215380A1 | 2021-10-28 | |||
| WO2021070738A1 | 2021-04-15 | |||
| WO2020110847A1 | 2020-06-04 | |||
| WO2020129750A1 | 2020-06-25 | |||
| WO2015133154A1 | 2015-09-11 |
Foreign References:
| US20190260029A1 | 2019-08-22 | |||
| JP2013069672A | 2013-04-18 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
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