公开(公告)号：US10374233B2

公开(公告)日：2019-08-06

申请号：US14778403

申请日：2014-03-11

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Keita Yamamoto

IPC: H01M4/62 ,  H01M4/00 ,  H01M4/13 ,  H01M4/139 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/052

Abstract: Slurry is prepared by dispersing a solvent containing fibrous carbon (carbon nanotube, vapor grown carbon fiber (VGCF (registered trademark))) by using a media-type disperser, and the slurry to be applied to a collector is obtained by kneading the prepared slurry and an electrode active material. As a media-type disperser, for example, a ball mill disperser or a bead mill disperser is used. The dispersion using the media-type disperser is performed for 5 to 10 hours. As a dispersant, for example, at least any one of a nonionic dispersant, an ethylenic dispersant, a polymeric dispersant and an amine dispersant is used. The dispersion is performed so that a fiber length of the fibrous carbon becomes 2 to 7 μm.

公开(公告)号：US20180375145A1

公开(公告)日：2018-12-27

申请号：US16013948

申请日：2018-06-21

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Naoaki Nishimura ,  Daisuke Hirata ,  Keita Yamamoto

IPC: H01M10/04 ,  H01M10/0525 ,  H01M4/36

Abstract: An electrode plate constituting a positive electrode or a negative electrode of a battery and having a flat plate shape including a sheet-shaped current collector made of metal foil and coated with a slurry electrode material containing an electrode active material, a conductive auxiliary agent, a binder, and a thickener, the thickener being propylene glycol alginate.

公开(公告)号：US20180287159A1

公开(公告)日：2018-10-04

申请号：US15939276

申请日：2018-03-29

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Naoaki Nishimura ,  Daisuke Hirata ,  Keita Yamamoto

IPC: H01M4/62 ,  B01F7/16 ,  H01M10/0525 ,  C09C1/48 ,  H04B1/22 ,  H01M4/131 ,  H01M4/505 ,  H01M2/16

Abstract: A conductive auxiliary agent for an electrode slurry for a battery. The electrode slurry contains an electrode active material and a conductive auxiliary agent, and is applied to a sheet-shaped current collector. The conductive auxiliary agent is a carbon paste produced by dispersing a carbon powder in a solvent. The carbon paste has a viscosity of at least 20 Pa·s and not more than 40 Pa·s. The carbon material can be acetylene black.

公开(公告)号：US10658667B2

公开(公告)日：2020-05-19

申请号：US15939276

申请日：2018-03-29

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Naoaki Nishimura ,  Daisuke Hirata ,  Keita Yamamoto

IPC: H01M4/62 ,  B01F7/16 ,  H01M10/0525 ,  C09C1/48 ,  H01M2/16 ,  H01M4/131 ,  H04B1/22 ,  H01M4/505 ,  H01M10/052

Abstract: A conductive auxiliary agent for an electrode slurry for a battery. The electrode slurry contains an electrode active material and a conductive auxiliary agent, and is applied to a sheet-shaped current collector. The conductive auxiliary agent is a carbon paste produced by dispersing a carbon powder in a solvent. The carbon paste has a viscosity of at least 20 Pa·s and not more than 40 Pa·s. The carbon material can be acetylene black.

公开(公告)号：US20180175453A1

公开(公告)日：2018-06-21

申请号：US15849565

申请日：2017-12-20

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Naoaki Nishimura ,  Daisuke Hirata ,  Keita Yamamoto

IPC: H01M10/0585 ,  H01M4/36 ,  H01M4/62 ,  H01M4/04 ,  H01M2/02

CPC classification number: H01M10/0585 ,  H01M2/0207 ,  H01M4/0404 ,  H01M4/36 ,  H01M4/621 ,  H01M6/188 ,  H01M10/052

Abstract: At least one of positive and negative electrode plates constitutes a flat plate-shaped electrode body in a laminated power storage element. The laminated power storage element includes a casing formed into a flat bag and the electrode body sealed in the casing together with an electrolyte. The at least one of the electrode plates includes: a sheet-shaped metal current collector; and an electrode material. The electrode material includes a powder material including an electrode active material and a binder including an emulsion, the binder added to the powder material. The electrode material is applied, at a predetermined thickness, onto the current collector. The at least one of the electrode plates is formed into a predetermined planar shape by shearing off a peripheral area thereof through a shearing process.