	US 11,949,104 B2
	Slurry for forming electrode-active-material layer for cell
Akito Yamamoto, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP)
Appl. No. 16/976,373
Filed by DAICEL CORPORATION, Osaka (JP)
PCT Filed Jul. 18, 2019, PCT No. PCT/JP2019/028364 § 371(c)(1), (2) Date Aug. 27, 2020, PCT Pub. No. WO2020/017614, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 2018-137148 (JP), filed on Jul. 20, 2018.
Prior Publication US 2021/0376326 A1, Dec. 2, 2021
Int. Cl. H01M 4/62 (2006.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/64 (2006.01)

CPC H01M 4/621 (2013.01) [H01M 4/04 (2013.01); H01M 4/366 (2013.01); H01M 4/64 (2013.01)]

12 Claims

1. A slurry for forming an electrode-active-material layer for a cell, the slurry comprising at least:

an active material;

an aqueous binder; and

a cellulose fiber;

wherein the aqueous binder is a cellulose or a derivative thereof,

wherein the slurry has a content of the cellulose or the derivative thereof from 0.1 to 0.6% by weight of a total amount of nonvolatile matter contained in the slurry;

wherein the cellulose fiber has an average thickness from 30 to 1000 nm and an average aspect ratio of from 10 to 1000;

wherein the cellulose fiber is present in a content of 1.5 to 3.0 times by weight of the aqueous binder content; and

wherein a supernatant obtained by centrifuging the slurry has a content of the cellulose or the derivative thereof of 90% by weight or greater based on a total amount of the cellulose or the derivative thereof contained in the slurry.