公开(公告)号：US20220209243A1

公开(公告)日：2022-06-30

申请号：US17442441

申请日：2020-03-03

Applicant: TOYO KOHAN CO., LTD.

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

IPC: H01M4/66 ,  C25D5/12 ,  C25D7/00 ,  C25D5/50 ,  H01M10/30

Abstract: The present invention has as its object the provision of a surface-treated sheet for an alkaline secondary battery, which has gas evolution suppressing effect and also has resistance to an alkaline electrolyte solution. A surface-treated sheet 100 of the present invention for an alkaline secondary battery has a base material 10, and a metal layer 20 formed on at least one side of the base material 10. The metal layer 20 includes an alloy layer 20M that contains Ni and Zn, the alloy layer includes a first region 20A in which a proportion of Ni is 60% to 85% based on a total content of Ni and Zn, and the first region 20A has a thickness of 0.15 μm or greater.

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.

公开(公告)号：US20220282388A1

公开(公告)日：2022-09-08

申请号：US17630274

申请日：2020-07-27

Applicant: TOYO KOHAN CO., LTD.

Inventor： Shinichirou HORIE ,  Etsuro TSUTSUMI ,  Toshifumi KOYANAGI ,  Shunki OBATA ,  Michio KAWAMURA ,  Koh YOSHIOKA ,  Naoharu HARADA ,  Tsuyoshi IRIE ,  Yonosuke YOSHII

IPC: C25D3/12 ,  C25D5/48 ,  C25D5/00

Abstract: [Object]
To provide a roughened nickel-plated material in which the formation unevenness such as generation of the unevenness or grooves in a roughened nickel plated layer is restrained.
[Solving Means]
A roughened nickel-plated material including a base material that is a rolled material, and a roughened nickel plated layer formed on at least one surface of the base material, in which SRzjis of the surface of the roughened nickel plated layer is equal to or more than 2 μm, and, letting a maximum height of the roughened nickel plated layer be SRz, a valley region B in a given virtual planer region A as observed at a height position of SRz×0.25 satisfies the following (i). (i) The length of the valley region B in the rolling direction RD of the base material is less than 40 μm in a direct distance.

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：US20240105960A1

公开(公告)日：2024-03-28

申请号：US17768966

申请日：2020-09-29

Applicant: TOYO KOHAN CO., LTD.

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

IPC: H01M4/66 ,  H01M4/70

CPC classification number: H01M4/662 ,  H01M4/70

Abstract: An electrolytic foil and a battery current collector is provided in which the risk of breakage or tearing during manufacturing presented by reduced thickness can be restrained, and which possess sufficient strength for repeated charging and discharging in a secondary battery. The electrolytic foil and the battery current collector contain a Ni—Fe alloy layer, having a thickness of 1.5 to 10 μm and having a first surface and a second surface and wherein the value of a three-dimensional surface properties parameter Sv divided by the thickness is equal to or less than 0.5 for the first surface and the second surface.

公开(公告)号：US20230265575A1

公开(公告)日：2023-08-24

申请号：US18005104

申请日：2021-07-15

Applicant: TOYO KOHAN CO., LTD.

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

IPC: C25D1/04 ,  C25D3/20 ,  H01M4/66

CPC classification number: C25D1/04 ,  C25D3/20 ,  H01M4/661

Abstract: [Object]
An object of the present invention is to provide an electrolytic foil and a battery current collector capable of restraining the risk of breakage and tearing during manufacturing due to reduction in film thickness and further exhibiting sufficient strength and elongation during repetitive charging and discharging of a secondary battery.
Solving Means
An electrolytic iron foil in which the electrolytic iron foil is less than 20 μm in thickness, the electrolytic iron foil has a first surface and a second surface, and a value obtained by dividing a three-dimensional surface texture parameter Sv by the thickness is equal to or less than 0.27 in both the first surface and the second surface.