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    SURFACE TREATED STEEL FOIL FOR CURRENT COLLECTOR
    1.
    发明公开
    SURFACE TREATED STEEL FOIL FOR CURRENT COLLECTOR 审中-公开

    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
    )

    ELECTROLYTIC IRON FOIL
    2.
    发明公开
    ELECTROLYTIC IRON FOIL 审中-公开

    公开(公告)号：US20230243056A1

    公开(公告)日：2023-08-03

    申请号：US18004963

    申请日：2021-07-15

    Applicant: TOYO KOHAN CO., LTD.

    Inventor： Michio KAWAMURA ,  Shinichiro HORIE ,  Etsuro TSUTSUMI ,  Yuma YOSHIZAKI ,  Koh YOSHIOKA

    IPC: C25D1/04 ,  H01M4/66 ,  C25D7/06

    CPC classification number: C25D1/04 ,  H01M4/66 ,  C25D7/0614

    Abstract: It is an object of the present invention to provide an electrolytic iron foil and a battery current collector in which the risk of breakage or tearing during manufacture caused by reduction in film thickness can be suppressed and which have thinness as well as strength and elongation sufficient for withstanding repeated charging and discharging in a secondary battery.
    An electrolytic iron foil in which, in at least either one surface, a crystallite diameter on (110) plane of iron is equal to or more than 45 nm and the electrolytic iron foil is less than 20 μm in thickness.

    CURRENT COLLECTOR FOR BATTERY, AND BATTERY
    3.
    发明申请
    CURRENT COLLECTOR FOR BATTERY, AND BATTERY 有权

    公开(公告)号：US20210376331A1

    公开(公告)日：2021-12-02

    申请号：US16341617

    申请日：2017-10-03

    Applicant: TOYO KOHAN CO., LTD.

    Inventor： Shinichirou HORIE ,  Hidehiko KOBAYASHI ,  Koh YOSHIOKA

    IPC: H01M4/66

    Abstract: [Object]
    To provide a current collector for battery, having a strength sufficient to suppress breakage and tears during production feared in association with thinning, and a battery having the current collector.
    [Solving Means]
    The current collector for battery according to the present invention has at least a first metal layer containing at least a metal selected from Cu, Fe, and Ni, and a second metal layer laminated on the first metal layer and containing at least a metal selected from Cu, Fe, and Ni other than the metal of the first metal layer. One of the first metal layer and the second metal layer contains the Ni, and a laminate interface between the first metal layer and the second metal layer has a roughness Ra≥0.12.

    LAMINATED ELECTROLYTIC FOIL
    4.
    发明申请
    LAMINATED ELECTROLYTIC FOIL 有权

    公开(公告)号：US20210175513A1

    公开(公告)日：2021-06-10

    申请号：US17045918

    申请日：2019-02-18

    Applicant: TOYO KOHAN CO., LTD.

    Inventor： Shinichirou HORIE ,  Etsuro TSUTSUMI ,  Toshifumi KOYANAGI ,  Koh YOSHIOKA

    IPC: H01M4/66 ,  B32B15/01 ,  B32B15/20 ,  C25D1/04 ,  C25D7/06 ,  C25D5/12

    Abstract: [Problem] To provide a laminated electrolytic foil having strength sufficient to successfully suppress tearing or ripping during manufacture, the tearing or ripping being concerned accompanying with a trend toward thinner structures in battery current collectors, and improved in handling properties during the manufacture, and also a battery using the laminated electrolytic foil.
    [Solution] A laminated electrolytic foil includes a first metal layer formed from Cu and a second metal layer formed from Ni or an Ni alloy, in which the first metal layer and the second metal layer are laminated together. The laminated electrolytic foil has an overall layer thickness, which is the thickness of the laminated electrolytic foil as a whole, of 3 to 15 μm and tensile strength of 700 MPa or higher.

    SURFACE-TREATED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    SURFACE-TREATED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20200321566A1

    公开(公告)日：2020-10-08

    申请号：US16759204

    申请日：2018-10-26

    Applicant: TOYO KOHAN CO., LTD.

    Inventor： Yuji NAKANO ,  Daisuke MATSUSHIGE ,  Koh YOSHIOKA

    IPC: H01M2/02 ,  C25D5/12 ,  C25D5/50

    Abstract: A surface-treated steel sheet, including: a steel sheet; and a nickel-cobalt-iron diffusion layer formed as an outermost surface layer on the steel sheet. When a content of Ni, a content of Co and a content of Fe of the nickel-cobalt-iron diffusion layer are determined based on a Ni intensity, a Co intensity and a Fe intensity each sequentially measured in the depth direction from the surface side of the nickel-cobalt-iron diffusion layer by a radio frequency glow discharge optical emission spectrometry, a content of Co at a specific depth position D, InCo_D, is 5% by mass or higher and a content of Fe at the specific depth position D, InFe_D, is 11% by mass or higher, the specific depth position D being a position where the Ni intensity is 0.5% of the maximum value of the Ni intensity. Also disclosed is a method for manufacturing the surface-treated steel sheet.

    SURFACE-TREATED STEEL SHEET FOR BATTERY CONTAINERS, BATTERY CONTAINER, AND BATTERY
    9.
    发明申请
    SURFACE-TREATED STEEL SHEET FOR BATTERY CONTAINERS, BATTERY CONTAINER, AND BATTERY 有权
    电池容器，电池和电池表面处理钢板

    公开(公告)号：US20150162576A1

    公开(公告)日：2015-06-11

    申请号：US14627902

    申请日：2015-02-20

    Applicant: TOYO KOHAN CO., LTD.

    Inventor： Shinichirou HORIE ,  Tatsuo TOMOMORI ,  Koh YOSHIOKA

    IPC: H01M2/02 ,  C23F17/00 ,  C25D5/50

    CPC classification number: H01M2/0287 ,  C23C10/28 ,  C23F17/00 ,  C25D5/50 ,  H01M2/0285 ,  H01M10/05 ,  Y10T428/12438

    Abstract: There is provided a surface-treated steel sheet for battery containers. The surface-treated sheet is used to form a battery container for a battery. The battery uses a nonaqueous electrolytic solution as an electrolytic solution. The surface-treated steel sheet is characterized by the features as below. The surface-treated steel sheet includes a base material made of steel and an iron-nickel diffusion layer formed by performing thermal diffusion treatment after forming a nickel plating layer at least on a surface of the base material to be located at the inner surface side of the battery container. The iron-nickel diffusion layer has an outermost layer of which a ratio of Ni and Fe is 7.5 or less as a molar ratio of Ni/Fe. The iron-nickel diffusion layer has a thickness of 0.6 μm or more.

    Abstract translation: 提供了一种用于电池容器的表面处理钢板。 表面处理片用于形成电池用电池容器。 电池使用非水电解液作为电解液。 表面处理钢板的特征如下。 表面处理钢板包括由钢制成的基材和通过在至少在基材的表面上形成镍镀层之后进行热扩散处理而形成的铁镍扩散层，以位于 电池容器。 铁 - 镍扩散层的Ni / Fe的摩尔比的最外层的Ni和Fe的比例为7.5以下。 铁镍扩散层的厚度为0.6μm以上。

    ROUGHENED NICKEL-PLATED SHEET
    10.
    发明申请
    ROUGHENED NICKEL-PLATED SHEET 有权

    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.

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