Title:
LITHIUM ION SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES
Document Type and Number:
WIPO Patent Application WO/2020/050285
Kind Code:
A1
Abstract:
An electrode 10 for lithium ion secondary batteries according to the present invention is provided with a positive electrode 21 and a negative electrode 11. The negative electrode 11 is provided with: a negative electrode active material layer 12 that contains a negative electrode active material and a binder for negative electrodes; and an insulating layer 13 that is provided on the surface of the negative electrode active material layer 12, while containing insulating fine particles and a binder for insulating layers. The insulating layer 13 is arranged to be in contact with the positive electrode 21. The binder for negative electrodes contains a water-soluble polymer and a particulate binder. The binder for insulating layers contains an organic solvent-soluble polymer; and the content of the organic solvent-soluble polymer is 15-45% by volume based on the total amount of the insulating layer. The insulating layer 13 has a thickness of 10-20 μm.
Inventors:
OKUDA KANTA (JP)
TERANISHI RIE (JP)
TERANISHI RIE (JP)
Application Number:
PCT/JP2019/034664
Publication Date:
March 12, 2020
Filing Date:
September 03, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
H01M4/13; H01M4/62; H01M10/052; H01M10/0585
Domestic Patent References:
| WO2017122359A1 | 2017-07-20 | |||
| WO2016104782A1 | 2016-06-30 |
Foreign References:
| JP2009218053A | 2009-09-24 | |||
| JP2012084322A | 2012-04-26 | |||
| JP2018098050A | 2018-06-21 |
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
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