Title:
BINDER FOR LITHIUM ION BATTERIES, AND ELECTRODE AND SEPARATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/064538
Kind Code:
A1
Abstract:
Provided is a nonaqueous binder for electrodes or separators, which is used in a lithium ion battery that has excellent cycle life characteristics at high temperatures. A nonaqueous binder for electrodes or separators of lithium ion batteries, which is obtained by complexing cellulose nanofibers and a thermoplastic fluorine-based resin, and which is characterized in that the cellulose nanofibers have a fiber size (diameter) of from 0.002 μm to 1 μm (inclusive), a fiber length of from 0.5 μm to 10 mm (inclusive), and an aspect ratio ((fiber length of cellulose nanofibers)/(fiber diameter of cellulose nanofibers)) of from 2 to 100,000 (inclusive).
Inventors:
MUKAI TAKASHI (JP)
IKEUCHI YUTA (JP)
SAKAMOTO TAICHI (JP)
YAMASHITA NAOTO (JP)
ISHIGURO RYOU (JP)
NAKAMURA SATORU (JP)
IKEUCHI YUTA (JP)
SAKAMOTO TAICHI (JP)
YAMASHITA NAOTO (JP)
ISHIGURO RYOU (JP)
NAKAMURA SATORU (JP)
Application Number:
PCT/JP2017/035626
Publication Date:
April 04, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
ATTACCATO LLC (JP)
JAPAN STEEL WORKS LTD (JP)
JAPAN STEEL WORKS LTD (JP)
International Classes:
H01M4/62; C08B3/12; C08L1/00; C08L27/12; H01M4/13; H01M50/426; H01M50/429
Domestic Patent References:
| WO2014185365A1 | 2014-11-20 | |||
| WO2014196551A1 | 2014-12-11 |
Foreign References:
| JP2002260663A | 2002-09-13 | |||
| JP2015101694A | 2015-06-04 | |||
| JP2009293167A | 2009-12-17 | |||
| JP2013185085A | 2013-09-19 | |||
| JP2016111001A | 2016-06-20 | |||
| JP2014057627A | 2014-04-03 | |||
| JP5999683B2 | 2016-09-28 | |||
| JPS612837B2 | 1986-01-28 | |||
| JP2013084521A | 2013-05-09 | |||
| JP2016021332A | 2016-02-04 | |||
| JP2015101694A | 2015-06-04 | |||
| JPS6149147B2 | 1986-10-28 |
Other References:
TAKASHI MUKAI ET AL., INDUSTRIAL MATERIALS, vol. 63, no. 12, 2015, pages 18 - 23
TAKASHI MUKAI ET AL., MATERIAL STAGE, vol. 17, no. 5, 2017, pages 29 - 33
TAKASHI MUKAI ET AL.: "Lithium-ion secondary battery-approach to material design and evaluation method for higher capacity and improved characteristics", 2017, INFORMATION TECHNOLOGY CO., LTD., pages: 210 - 220
See also references of EP 3691002A4
TAKASHI MUKAI ET AL., MATERIAL STAGE, vol. 17, no. 5, 2017, pages 29 - 33
TAKASHI MUKAI ET AL.: "Lithium-ion secondary battery-approach to material design and evaluation method for higher capacity and improved characteristics", 2017, INFORMATION TECHNOLOGY CO., LTD., pages: 210 - 220
See also references of EP 3691002A4
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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