公开(公告)号：US20230057775A1

公开(公告)日：2023-02-23

申请号：US17794509

申请日：2021-01-22

Applicant: TOYO KOHAN CO., LTD.

Inventor： Shinichirou HORIE ,  Etsuro TSUTSUMI ,  Toshifumi KOYANAGI ,  Koh YOSHIOKA ,  Kyoto TAKANO ,  Shunki OBATA ,  Satoko HARADA ,  Keishi KATSURA ,  Misato UENO

IPC: C25D5/00 ,  C25D5/36

Abstract: A roughened nickel-plated sheet including a roughened nickel layer on at least one surface of a metal substrate as the outermost layer thereof, the roughened nickel layer being formed of a plurality of nickel protrusions. When the structure of the roughened nickel-plated sheet is observed at height positions with a focused ion beam scanning electron microscope (FIB-SEM), the absolute value of the change rate of the nickel occupancy is equal to or less than a predetermined value, and the nickel occupancy and the number of nickel protrusions present at a height position located 2.0 μm from the base position of the roughened nickel layer toward the surface in the height direction are equal to or more than predetermined values, respectively.

公开(公告)号：US20240222645A1

公开(公告)日：2024-07-04

申请号：US18557608

申请日：2022-04-28

Applicant: TOYO KOHAN CO., LTD.

Inventor： Etsuro TSUTSUMI ,  Misato UENO ,  Keishi KATSURA ,  Shinichirou HORIE ,  Satoko HARADA ,  Toshifumi KOYANAGI ,  Shunki OBATA ,  Koh YOSHIOKA

IPC: H01M4/66 ,  H01M4/75

CPC classification number: H01M4/667 ,  H01M4/669 ,  H01M4/75

Abstract: [Object]
To provide a surface treated steel foil for a current collector, the surface treated steel foil having suitable hydrogen barrier properties.
[Solving Means]
A surface treated steel foil for a current collector, the surface treated steel foil having a first surface and a second surface located on a side opposite to the first surface, includes a base material formed of a steel and an iron-nickel alloy layer that is laminated on the base material on the first surface side and/or the second surface side. The iron-nickel alloy layer contains Fe1Ni1 as an alloy phase. With respect to the surface including the alloy layer, the ratio of the maximum value of diffraction intensity of a Fe1Ni1 (311) plane and the maximum value of diffraction intensity of a Fe(211) plane in X-ray diffraction satisfies the following formula (1):









I
⁡
(


Fe
1

⁢


Ni
1

(
311
)


)

/

I
⁡
(

Fe
(
211
)

)


≥

0.015
.





(
1
)

公开(公告)号：US20170253985A1

公开(公告)日：2017-09-07

申请号：US15510364

申请日：2015-03-11

Applicant: Toyo Seikan Co., Ltd. ,  TOYO KOHAN CO., LTD.

Inventor： Mitsuhide AIHARA ,  Wataru KUROKAWA ,  Munemitsu HIROTSU ,  Kunihiro YOSHIMURA ,  Satoko HARADA ,  Kousuke SASAKI ,  Masahiko MATSUKAWA ,  Miwa UCHIKAWA ,  Keisuke YOSHIDA

IPC: C25D9/10 ,  B32B15/01 ,  C25D5/48

CPC classification number: C25D9/10 ,  B32B15/013 ,  C25D5/48

Abstract: A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m2 and the amount of F being not less than 12 mg/m2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.

公开(公告)号：US20240234740A1

公开(公告)日：2024-07-11

申请号：US18557603

申请日：2022-04-28

Applicant: TOYO KOHAN CO., LTD.

Inventor： Keishi KATSURA ,  Misato UENO ,  Shinichirou HORIE ,  Etsuro TSUTSUMI ,  Satoko HARADA ,  Toshifumi KOYANAGI ,  Shunki OBATA ,  Koh YOSHIOKA

IPC: H01M4/66 ,  H01M4/02 ,  H01M10/34

CPC classification number: H01M4/662 ,  H01M4/667 ,  H01M10/345 ,  H01M2004/021

Abstract: To provide a surface treated steel foil that is for a current collector and that has hydrogen barrier properties suitable for a battery using a hydrogen occluding alloy.
The surface treated steel foil for a current collector has a first surface on which a hydrogen occluding alloy is disposed and a second surface located on a side opposite to the first surface. The surface treated steel foil for a current collector is characterized by having an iron-nickel alloy layer that is laminated on at least one surface side of the first surface side and the second surface side on the side opposite to the first surface side of a metallic base material composed of steel foil and that restrains permeation or diffusion of hydrogen in the surface treated steel foil for a current collector, and is characterized in that at least one layer included in the iron-nickel alloy layer has a thickness of not less than 0.5 μm.

公开(公告)号：US20240229284A1

公开(公告)日：2024-07-11

申请号：US18557606

申请日：2022-04-28

Applicant: TOYO KOHAN CO., LTD.

Inventor： Etsuro TSUTSUMI ,  Kyoko TAKANO ,  Shinichirou HORIE ,  Koh YOSHIOKA ,  Keishi KATSURA ,  Satoko HARADA ,  Misato UENO ,  Toshifumi KOYANAGI ,  Shunki OBATA

IPC: C25D7/06 ,  B32B15/01 ,  C25D3/12 ,  C25D5/14 ,  C25D5/50 ,  H01M4/02 ,  H01M4/66

CPC classification number: C25D7/0614 ,  B32B15/011 ,  B32B15/015 ,  C25D3/12 ,  C25D5/14 ,  C25D5/50 ,  H01M4/662 ,  H01M4/667 ,  H01M2004/029

Abstract: [Object]
To provide a surface treated steel foil having hydrogen barrier properties suitable for a bipolar battery.
[Solving Means]
A surface treated steel foil having a first surface and a second surface located on a side opposite to the first surface, the surface treated steel foil including a base material composed of a low carbon steel or an ultra low carbon steel, and an iron-nickel alloy layer laminated on the base material on at least one surface side of the first surface side and the second surface side. Fe1Ni1 is included as an alloy phase in the iron-nickel alloy layer, an orientation index in X-ray diffraction of a (220) plane of Fe1Ni1 in the surface having the iron-nickel alloy layer is not less than 1.0, and the ratio of the maximum value of diffraction intensity of the (220) plane of Fe1Ni1 and the maximum value of diffraction intensity of a Fe(200) plane satisfies the following formula (1).