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公开(公告)号：US20230243056A1
公开(公告)日：2023-08-03
申请号：US18004963
申请日：2021-07-15
申请人： TOYO KOHAN CO., LTD.
CPC分类号： C25D1/04 , H01M4/66 , C25D7/0614
摘要： 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：US20240105960A1
公开(公告)日：2024-03-28
申请号：US17768966
申请日：2020-09-29
申请人： TOYO KOHAN CO., LTD.
摘要： 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.
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公开(公告)号：US20230265575A1
公开(公告)日：2023-08-24
申请号：US18005104
申请日：2021-07-15
申请人： TOYO KOHAN CO., LTD.
摘要： [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.
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