公开(公告)号：US20180212266A1

公开(公告)日：2018-07-26

申请号：US15883325

申请日：2018-01-30

Applicant: SHOWA DENKO K.K.

Inventor： Kenzo HANAWA ,  Masatoshi ICHIKAWA ,  Gaku ORIJI ,  Irwansyah ,  Keizo ISEKI

IPC: H01M8/18 ,  H01M8/04186 ,  H01M8/0234 ,  H01M4/94 ,  H01M2/40

Abstract: A redox flow battery is provided, including an ion-exchange membrane, a current collector plate, and an electrode that is disposed between the ion-exchange membrane and the current collector plate. The electrode includes a main electrode layer in which an electrolytic solution flows from a surface on the current collector plate side to a surface on the ion-exchange membrane side, and the main electrode layer includes a plurality of main electrode pieces which are arranged in parallel in a plane direction.

公开(公告)号：US20200075968A1

公开(公告)日：2020-03-05

申请号：US16466575

申请日：2017-12-06

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Kenzo HANAWA

IPC: H01M8/0258 ,  H01M8/18

Abstract: This collector plate includes a plurality of flow paths through which an electrolyte is capable of flowing, and which are provided in at least one surface of the collector plate, in which a surface roughness (RaT) of a first surface of an internal wall regulated between the plurality of flow paths, which is measured along a width direction of the internal wall, is smaller than a surface roughness (Rat) of the first surface which is measured along a length direction of the internal wall.

公开(公告)号：US20180366736A1

公开(公告)日：2018-12-20

申请号：US15563013

申请日：2016-04-01

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Gaku ORIJI ,  Kenzo HANAWA

IPC: H01M4/70 ,  H01M4/86 ,  H01M8/18 ,  H01M4/66 ,  H01M4/36

Abstract: An electrode material including a conductive sheet containing carbon nanotubes having an average fiber diameter of 1 μm or less; a liquid inflow member that is formed on a first surface of the conductive sheet such that an electrolyte solution that is passed therethrough flows into the conductive sheet; and a liquid outflow member that is formed on a second surface of the conductive sheet and out of which flows the electrolyte solution that has passed through the conductive sheet; wherein, when using a sheet surface of the conductive sheet as a reference plane, the Darcy permeability, in an in-plane direction, inside the liquid inflow member, is at least 100 times the Darcy permeability, in a normal direction, through the conductive sheet.

公开(公告)号：US20190393534A1

公开(公告)日：2019-12-26

申请号：US16466588

申请日：2017-12-06

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Kenzo HANAWA

IPC: H01M8/18 ,  H01M8/026 ,  H01M8/0289 ,  H01M8/10

Abstract: This collector plate includes a peripheral edge wall that surrounds a predetermined region, and is provided on at least one surface of the collector plate, in which a surface roughness (Ra) of a first surface which is an exposed surface of the peripheral edge wall on the side of one surface, which is measured along a direction perpendicular to an extension direction of the peripheral edge wall is greater than a surface roughness (Ra) of the first surface which is measured along the extension direction of the peripheral edge wall.

公开(公告)号：US20190198904A1

公开(公告)日：2019-06-27

申请号：US16329516

申请日：2017-09-01

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Kenzo HANAWA

IPC: H01M8/18 ,  H01M4/86 ,  H01M4/96

CPC classification number: H01M8/188 ,  H01M4/86 ,  H01M4/8657 ,  H01M4/96 ,  H01M8/18 ,  Y02E60/528

Abstract: The present invention provides a redox flow secondary battery including a positive electrode, a negative electrode facing the positive electrode, and an ion exchange membrane provided between the positive electrode and the negative electrode, at least one electrode of the positive electrode and the negative electrode has a metal protective film having an opening and a carbon electrode including carbon fibers in order from the ion exchange membrane side, and the height of the protruding peak portion of the surface of the metal protective film, which is in contact with the ion exchange membrane, is 0.1 to 2 μm.

公开(公告)号：US20180034066A1

公开(公告)日：2018-02-01

申请号：US15538308

申请日：2015-12-24

Applicant: SHOWA DENKO K.K.

Inventor： Keizo ISEKI ,  Masatoshi ICHIKAWA ,  Gaku ORIJI ,  Kenzo HANAWA

IPC: H01M4/96 ,  H01M8/18 ,  H01M8/0202

Abstract: A redox flow electrode according to one aspect of the present invention is a redox flow battery electrode disposed between an ion exchange membrane and a bipolar plate, wherein the electrode includes a conductive sheet containing carbon nanotubes having an average fiber diameter of 1 μm or less, and a porous sheet that is laminated to the conductive sheet and is formed from fibers having an average fiber diameter of greater than 1 μm.

公开(公告)号：US20190393533A1

公开(公告)日：2019-12-26

申请号：US16466465

申请日：2017-12-06

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Kenzo HANAWA

IPC: H01M8/18 ,  H01M8/1018 ,  H01M8/0234 ,  H01M8/0247

Abstract: This collector plate includes a plurality of flow paths through which an electrolyte flows and which are provided in at least one surface of the collector plate, in which an arithmetic surface roughness (Ra) of a first surface, which is an exposed surface of a wall portion between the plurality of flow paths on the side of one surface, is greater than or equal to 1 μm and less than or equal to 300 μm.

公开(公告)号：US20190267657A1

公开(公告)日：2019-08-29

申请号：US16322020

申请日：2017-08-04

Applicant: SHOWA DENKO K.K.

Inventor： Masatoshi ICHIKAWA ,  Keizo ISEKI ,  Kenzo HANAWA

IPC: H01M8/18 ,  H01M4/62

Abstract: A redox flow battery including: an ion-exchange membrane; a current collector plate; and an electrode disposed between the ion-exchange membrane and the current collector plate, wherein charging and discharging are performed by flowing of an electrolytic solution to the electrode. The electrode includes a first electrode part and a second electrode part in this order from the current collector plate side. The area of the second electrode part is larger than the area of the first electrode part and the second electrode part covers the whole of the first electrode part, when viewed from the ion-exchange membrane side. The current collector plate has a peripheral edge wall, which forms a housing region to which the first electrode part fits, on a surface of the electrode side. The second electrode part covers at least a part of a surface of the peripheral edge wall on the ion-exchange membrane side.