Sumitomo Electric Toyama Co., Ltd.

Sumitomo Electric Industries, Limited

Primearth Ev Energy Co., Ltd.

Nippon Graphite Industries, Ltd.

Sumitomo Electric Industries Toyama Co., Ltd.

Toyota Battery Co., Ltd.

Hitoshi Tsuchida

Kazuki Okuno

Masatoshi Majima

Yoshihiro Nakai

Junichi Nishimura

Hidetoshi Saito

Masahiro Kato

Tomoyuki Awazu

Tadashi Omura

Toshitaka Nakagawa

Seiji Mabuchi

Akihisa Hosoe

Yusuke Shimizu

Keizo Harada

Tetsuya Kuwabara

Taichiro Nishikawa

Takafumi Uemiya

Takahiro Higashino

Kengo Tsukamoto

Koutarou Kimura

Tomoharu Takeyama

Mitsuyasu Ogawa

Akiko Inoue

Kei Sakamoto

Jin-Joo Park

Kazuo Yamazaki

Yusuke Oshima

Kiyotaka Utsunomiya

Minoru Nakamoto

Kazuhiro Nanjo

Ryuuichi Yoshikawa

Keiji Shiraishi

Tadashi Dohi

Masayuki Furukawa

Akihiro Fujimaki

Hiroshi Ooi

Ryuichi Yoshikawa

Dai Kamogawa

A metal porous body includes: a metal framework; and a separation wall formed in one piece with the metal framework, the separation wall being composed of the same material as a material of the metal framework. A plurality of cells each having a polyhedral shape exist inside the metal porous body. A side of the polyhedral shape is constituted of the metal framework. A location in which an opening of a cell of the plurality of cells is closed by the separation wall exists inside the metal porous body, the opening being defined by a side of a polyhedral shape of the cell.

Metal porous body

A method for producing a metal porous body includes the steps of: performing electrical conduction treatment on a surface of a skeleton of a sheet-like resin porous body having the skeleton with a three-dimensional network structure, to obtain a conductive resin porous body having a conductive layer; performing electroplating treatment on a surface of a skeleton of the conductive resin porous body to obtain a plated resin porous body having a metal plating layer; and performing treatment of removing at least the resin porous body from the plated resin porous body to obtain a metal porous body. In the electroplating treatment, power is supplied to a rotation shaft of a rotating electrode roller while a contact surface of a power supply brush composed of a sintered body is brought into sliding contact with the rotation shaft, with a lubricant, not containing conductive metal powder, interposed therebetween.

Method for producing metal porous body, and plating apparatus

A metal porous material according to an aspect of the present disclosure is a metal porous material in sheet form that includes a frame having a three-dimensional network configuration, wherein the frame includes an alloy including at least nickel (Ni) and chromium (Cr), the frameis a solid solution with iron (Fe), the frame includes a chromium oxide (CrO) layer as an outermost layer and includes a chromium carbide layer located under the chromium oxide layer, the chromium oxide layer has a thickness not less than 0.1 &#x3bc;m and not more than 3 &#x3bc;m, and the chromium carbide layer has a thickness not less than 0.1 &#x3bc;m and not more than 1 &#x3bc;m.

Metal porous material, fuel cell, and method of producing metal porous material

A fuel cell according to the present disclosure includes a flat plate-shaped metal porous body having a framework of a three-dimensional network structure as a gas diffusion layer. The framework is made of metal or alloy. In the metal porous body, a ratio of an average pore diameter in a direction parallel to a gas flow direction to an average pore diameter in a direction perpendicular to the gas flow direction is greater than or equal to 1.4 and less than or equal to 2.5.

Fuel cell and method of manufacturing metal porous body

A metal porous body is a metal porous body mainly composed of nickel and having a framework of a three-dimensional network structure, Ni(OH)being present in a surface of the framework, when the metal porous body is subjected to at least 30 potential scans between a lower limit potential of &#x2212;0.10 V and an upper limit potential of +0.65 V with respect to a hydrogen standard potential in not less than 10% by mass and not more than 35% by mass of a potassium hydroxide aqueous solution, at least oxygen being detected within a depth of 5 nm from the surface, and hydrogen being detected at least in the surface.

Metal porous body and current collector for nickel-metal hydride battery

A plating processing apparatus in which a plating object is immersed in a plating solution to form a plating layer on a surface of the plating object. A plating tank contains the plating solution, and a power supply roller is rotated while supplying electric power to the plating object, and conveys the plating object to be immersed into the plating solution contained in the plating tank and then moved to the outside of the plating solution. An anode case is disposed inside the plating tank and held in electrical contact with the plating solution contained in the plating tank, and a control panel controls electric power supplied to the power supply roller and the anode case. A first busbar electrically connects the power supply roller and the control panel, and a second busbar electrically connects the anode case and the control panel.

Plating processing apparatus

A package body includes a porous metal body having an elongated sheet shape, a core member having a cylindrical shape, a protective sheet, and a resin film. The porous metal body is wound around the core member. The protective sheet is wound around the wound porous metal body to cover an outer surface of the wound porous metal body. The protective sheet and the porous metal body are covered with the resin film. The core member is made of paper or a resin.

Package body and method of manufacturing package body

A metal porous body having a connection portion where end portions in a longitudinal direction X of at least two long sheet-shaped metal porous materials are connected in a manner overlapping with each other, each of the metal porous materials having a frame with a three-dimensional network structure, the metal porous body having a recess with a thickness thinner than a thickness of each of the metal porous materials, in the connection portion, the frames of the at least two metal porous materials being entangled with each other, in the recess.

Metal porous body and method for manufacturing metal porous body

A method for producing a metal porous body includes the steps of: performing electrical conduction treatment on a surface of a skeleton of a sheet-like resin porous body having the skeleton with a three-dimensional network structure, to obtain a conductive resin porous body having a conductive layer; performing electroplating treatment on a surface of a skeleton of the conductive resin porous body to obtain a plated resin porous body having a metal plating layer; and performing treatment of removing at least the resin porous body from the plated resin porous body to obtain a metal porous body. In the electroplating treatment, the conductive resin porous body is supplied with power by a rotating electrode roller, the electrode roller is supplied with power by bringing a power supply brush formed by a material containing iron as a main component into sliding contact with a part of a rotation shaft, and at least a surface of at least the part of the rotation shaft with which the power supply brush is brought into contact is formed by a material containing iron or nickel as a main component.

Provided is a porous metal body having superior corrosion resistance to conventional metal porous bodies composed of nickel-tin binary alloys and conventional metal porous bodies composed of nickel-chromium binary alloys. The porous metal body has a three-dimensional network skeleton and contains at least nickel, tin, and chromium. The concentration of chromium contained in the porous metal body is highest at the surface of the skeleton of the porous metal body and decreases toward the inner side of the skeleton. In one embodiment, the chromium concentration at the surface of the skeleton of the porous metal body is more preferably 3% by mass or more and 70% by mass or less.

Porous metal body and method for producing same

A porous metal body is provided that is inexpensive, usable for an electrode of a fuel cell or the like, and has excellent corrosion resistance. There is provided a porous metal body for a fuel cell, which is a sheet-shaped porous metal body, including at least nickel, tin, and chromium, in which the chromium concentration of at least one surface of the porous metal body is 3% to 50% by mass. In the porous metal body, preferably, the chromium concentration of one surface is higher than the chromium concentration of another surface.

Porous metal body, method for manufacturing porous metal body, and fuel cell

Provided are a porous metal body that is excellent in terms of corrosion resistance and that is suitable for a collector for batteries such as lithium-ion batteries, capacitors, or fuel cells; and methods for producing the porous metal body. A production method includes a step of coating a porous nickel body with an alloy containing at least nickel and tungsten or a metal containing at least tin; and a subsequent step of a heat treatment. Another production method includes a step of forming a nickel-plated layer on a porous base and then continuously forming an alloy-plated layer containing at least nickel and tungsten or tin, a step of removing the porous base, and a step of reducing metal. Such a method can provide a porous metal body in which tungsten or tin is diffused in a porous nickel body or a nickel-plated layer.

Method for producing a porous metal body

An object of the present invention is to provide, at a low cost, a porous metal body that can be used in an electrode of a fuel cell and that has better corrosion resistance. The porous metal body has a three-dimensional mesh-like structure and contains nickel (Ni), tin (Sn), and chromium (Cr). A content ratio of the tin is 10% by mass or more and 25% by mass or less, and a content ratio of the chromium is 1% by mass or more and 10% by mass or less. On a cross section of a skeleton of the porous metal body, the porous metal body contains a solid solution phase of chromium, nickel, and tin. The solid solution phase contains a solid solution phase of chromium and trinickel tin (NiSn), the solid solution phase having a chromium content ratio of 2% by mass or less, and does not contain a solid solution phase that is other than a solid solution phase of chromium and trinickel tin (NiSn) and that has a chromium content ratio of less than 1.5% by mass.

Porous metal body and method for producing porous metal body

A porous metal member composed of an alloy at least containing nickel and tungsten is provided. The alloy may contain 50 to 80 wt % of nickel and 20 to 50 wt % of tungsten and may further contain 10 wt % or less of phosphorus and/or 10 wt % or less of boron. Such a porous metal member can be produced by, for example, making a porous base such as a urethane foam be electrically conductive, forming an alloy film containing nickel and tungsten, then removing the porous base from the alloy film, and subsequently reducing the alloy.

Highly corrosion-resistant porous metal member

A battery electrode substrate includes a metallic porous body. The metallic porous body has a structure in which a surface of a plastic fiber in a woven or unwoven fabric is coated with a nickel film. The nickel film coats the surface with an average coverage ratio of not less than 85%.

Growing community of inventors

Imizu, Japan

Hitoshi Tsuchida