公开(公告)号：US20230048875A1

公开(公告)日：2023-02-16

申请号：US17792875

申请日：2020-11-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinji Mino ,  Eisuke Sato ,  Takanori Maruo

IPC: H01M4/04 ,  B01F27/051 ,  H01M4/62

Abstract: A coating method has: a first step for mixing an active material, a binding agent, and a solvent, and obtaining a mixed slurry; a second step for adding an additive to the mixed slurry, stirring the mixed slurry and the additive, and obtaining a coating slurry and a third step for intermittently coating the coating slurry on a collector body, and forming a coated part and a non-coated part. In the second step, the addition amount of the additive is set in accordance with a preset coating speed of the coating slurry, or the weight of the coated part, and the additive includes castor oil, cellulose nanofibers, modified silicone, an amide, polyethylene oxide, propylene glycol monomethyl ether acetate, polyamine, and/or polycarboxylic acid.

公开(公告)号：US20220069272A1

公开(公告)日：2022-03-03

申请号：US17415224

申请日：2019-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinji Mino ,  Eisuke Sato ,  Yoshinori Sakai ,  Kazutoshi Utsumiya

IPC: H01M4/04 ,  H01M4/36

Abstract: A positive electrode slurry including a positive electrode material mixture and a dispersion medium for dispersing the positive electrode material mixture. The positive electrode material mixture contains a positive electrode active material, an electrically conductive agent, a binder, and an additive. The additive includes a compound intramolecularly having a polyether group and an acidic group.