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.

公开(公告)号：US20200035960A1

公开(公告)日：2020-01-30

申请号：US16498741

申请日：2018-03-30

Applicant: TOYO KOHAN CO., LTD.

Inventor： Yuji NAKANO ,  Daisuke MATSUSHIGE ,  Koh YOSHIOKA

IPC: H01M2/02 ,  C25D5/50 ,  C25D5/12 ,  C23C8/16

Abstract: A surface-treated metal plate including: a metal plate; and a nickel-cobalt binary alloy layer formed on the metal plate. When a part having a content ratio of oxygen atoms of 5 atomic % or more as measured by X-ray photoelectron spectroscopic analysis is an oxide coating film, the nickel-cobalt binary alloy layer contains the oxide coating film with a thickness of 0.5 to 30 nm on a surface thereof, and when a pressure cooker test including temperature increasing, retention for 72 hours under a water-vapor atmosphere at a temperature of 105° C. and a relative humidity of 100% RH, and temperature decreasing is performed, the amount of increase in the thickness of the oxide coating film is 28 nm or less.

公开(公告)号：US20240372109A1

公开(公告)日：2024-11-07

申请号：US18687992

申请日：2022-09-01

Applicant: TOYO KOHAN CO., LTD.

Inventor： Michio KAWAMURA ,  Kaori UEHARA ,  Etsuro TSUTSUMI ,  Shinichirou HORIE ,  Daisuke MATSUSHIGE

IPC: H01M4/66 ,  H01M4/02 ,  H01M10/30

Abstract: Provided is a surface-treated metal sheet for batteries, the surface-treated metal sheet comprising a base material which is a metal sheet based on iron or nickel, and a nickel-tin alloy layer on at least one side of the metal sheet.

公开(公告)号：US20180062121A1

公开(公告)日：2018-03-01

申请号：US15557937

申请日：2016-03-11

Applicant: TOYO KOHAN CO., LTD.

Inventor： Eiji OKAMATSU ,  Yuji NAKANO ,  Daisuke MATSUSHIGE

IPC: H01M2/02 ,  C25D7/00 ,  C25D3/12 ,  C25D3/56 ,  C25D5/14 ,  C25D5/50 ,  B21D22/20

Abstract: There is provided a method for producing a surface-treated steel sheet for battery containers (1) comprising forming a dull or semi-bright nickel plating layer (12) on at least the surface to be the outside of a battery container in a steel sheet (11), wherein the nickel plating layer (12) is formed by performing plating treatment under a condition of a bath temperature of 70° C. or more.