Title:
BINDER SUITABLE FOR ELECTRICITY STORAGE DEVICE ELECTRODES, BINDER SOLUTION, ELECTRICITY STORAGE DEVICE ELECTRODE SLURRY, ELECTRICITY STORAGE DEVICE ELECTRODE, AND ELECTRICITY STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/187366
Kind Code:
A1
Abstract:
The present invention provides a binder for electricity storage device electrodes, said binder being not susceptible to the formation of gel-like lumps when dissolved, while enabling the formation of a suitably uniform electrode that has a low resistance and a high discharge capacity if used for an electricity storage device electrode. The present invention discloses a binder which contains a water-soluble resin powder that is composed of particles having an average particle diameter of from 100 to 2,000 μm. With respect to 50 particles randomly selected from the particles contained in the water-soluble resin powder and having a diameter of from 100 to 1,000 μm, the average value PA of the roundness P represented by formula (1) of each particle is from 0.1 to 0.8. (In formula (1), ri represents the radius of curvature of each corner of each particle; R represents the radius of the maximum inscribed circle of each particle; and N represents the number of corners of each particle, provided that if the number of corners of a particle is 9 or more, the radii of curvature of 8 corners are selected in ascending order of the radii of curvature, and N is set to 8.)
Inventors:
TACHIKAWA KENGO (JP)
INUI YOSHIHISA (JP)
NII SHINSUKE (JP)
TAOKA YUTA (JP)
INUI YOSHIHISA (JP)
NII SHINSUKE (JP)
TAOKA YUTA (JP)
Application Number:
PCT/JP2021/010081
Publication Date:
September 23, 2021
Filing Date:
March 12, 2021
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
H01M4/62; C08K5/3415; C08L29/04; H01G11/38; H01M4/13; H01M4/1391; H01M4/24; H01M4/26; H01M4/32
Domestic Patent References:
| WO2017029902A1 | 2017-02-23 |
Foreign References:
| JP2016209836A | 2016-12-15 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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