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 ?m 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.

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.

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.

Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.

Abstract: Provided is a battery container (1) including a can body (2) and a can lid (3), each being made of a metal. A peripheral edge portion of the can lid (3) is joined to a peripheral edge of an opening portion of the can body (2) formed in a bottomed cylindrical shape. A bottom portion (21) of the can body (2) is formed so as to include a curved surface, and the can lid (3) is formed so as to include a curved surface that is curved in the same manner as an area of the bottom portion (21) of the can body (2) that is formed as the curved surface.

Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness RZjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, an adhesion amount of the roughened nickel plated layer is 0.4 to 14.0 g/m2, and an adhesion amount of the zinc plated layer is 3 g/m2 or more.

Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness Rzjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, and the metal substrate is a steel sheet.

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).

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 ?m.

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 .

Abstract: A bipolar electrode (100) for a metal hydride battery includes a current collector (10), a negative electrode active material layer (20) provided on a first surface (10A) of the current collector (10), and a positive electrode active material layer (30) provided on a second surface (10B) of the current collector (10). The negative electrode active material layer (20) contains a metal hydride. The current collector (10) includes a steel sheet (13) and a Ni—Fe alloy layer (15) formed on at least one surface of the steel sheet (13).

Abstract: Provided is a sulfide all-solid battery having an anode current collector of powerful adhesiveness which is difficult to be sulfurized. The sulfide all-solid-state battery including: a cathode layer; an anode layer; and a sulfide solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the anode layer has an anode mixture layer, and an anode current collector on a face of the anode mixture layer, the face being on an opposite side of the sulfide solid electrolyte layer, the anode current collector is electrolytic iron foil that does not substantially contain other elements, and the anode current collector has surface roughness Ra of 0.2 ?m to 0.6 ?m, and surface roughness Rz of 2 ?m to 6 ?m.

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 ?m, 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 ?m in a direct distance.

Abstract: The present invention provides steel foil for battery containers, the steel foil being characterized in that the maximum value of the maximum principal strain in uniaxial deformation is not less than 0.25 and the maximum value of the maximum principal strain in planar strain deformation is not less than 0.1. The present invention is able to provide steel foil for battery containers that is capable of restraining cracking of a base material when subjected to a severe forming process for battery containers.

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 ?m 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.

Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.

Abstract: A roughened plated sheet including a roughened plated layer having a roughened nickel plated layer and a zinc plated layer formed on at least one surface of a metal substrate in this order from the metal substrate side, wherein a ten-point average roughness Rzjis of a surface of the roughened plated layer, according to laser microscope measurement, is 3 ?m or more, and the metal substrate is a steel sheet.

Abstract: A surface-treated steel sheet for a battery container includes a steel sheet, an iron-nickel diffusion layer formed on the steel sheet, and a nickel layer formed on the iron-nickel diffusion layer and constituting the outermost layer. When the Fe intensity and the Ni intensity are continuously measured from the surface of the surface-treated steel sheet for a battery container along the depth direction with a high frequency glow discharge optical emission spectrometric analyzer, the thickness of the iron-nickel diffusion layer being the difference (D2?D1) between the depth (D1) at which the Fe intensity exhibits a first predetermined value and the depth (D2) at which the Ni intensity exhibits a second predetermined value is 0.04 to 0.31 ?m; and the total amount of the nickel contained in the iron-nickel diffusion layer and the nickel contained in the nickel layer is 10.8 to 26.7 g/m2.

Abstract: There is provided a roughened nickel-plated sheet having a roughened nickel layer as an outermost surface layer on at least one surface of a metal base material, wherein the brightness L* of the surface of the roughened nickel layer is 30 to 50, the glossiness of 85° of the surface of the roughened nickel layer is 1.5 to 50.

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 ?m 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.