Abstract: A porous metal body includes a three-dimensional mesh-like structure consisting of a skeleton, the porous metal body having a flat plate-like external form including a pair of main surfaces and end surfaces that connect the pair of main surfaces to each other, in which the skeleton includes a main metal layer consisting of nickel or a nickel alloy, and an oxide layer on a surface of the main metal layer, in which the oxide layer is not arranged on portions of the surface of the main metal layer included in the pair of main surfaces of the porous metal body.

Abstract: A plate-like porous metal body having a three-dimensional mesh-like structure and containing nickel (Ni). The content of the nickel in the porous metal body is 50% by mass or more. The porous metal body has a thickness of 0.10 mm or more and 0.50 mm or less.

Abstract: A three-dimensional network aluminum porous body which enables to produce an electrode continuously, an electrode using the aluminum porous body, and a method for producing the electrode is disclosed. A long sheet-shaped three-dimensional network aluminum porous body is provided to be used as a base material in a method for producing an electrode including at least winding off, a thickness adjustment step, a lead welding step, an active material filling step, a drying step, a compressing step, a cutting step and winding-up, wherein the three-dimensional network aluminum porous body has a tensile strength of 0.2 MPa or more and 5 MPa or less.

Abstract: An electrode for a power storage device includes carbon nanotubes, graphene, an ionic liquid, and a three-dimensional network metal porous body which holds the carbon nanotubes, the graphene, and the ionic liquid in pore portions, wherein a ratio of a total amount of the carbon nanotubes and the graphene to an amount of the ionic liquid is more than or equal to 10% by mass and less than or equal to 90% by mass, and a mass ratio between the carbon nanotubes and the graphene is within a range of 3:7 to 7:3.

Abstract: A composite material including a first porous metal body having a three-dimensional mesh-like skeleton, a second porous metal body having a three-dimensional mesh-like skeleton, and a bonding portion formed by entanglement of the skeleton of the first porous metal body and the skeleton of the second porous metal body. The porosity of the first porous metal body may be different from the porosity of the second porous metal body.

Abstract: A method for producing a nickel alloy porous body includes a step of applying a coating material that contains a nickel alloy powder of nickel and an added metal, the nickel alloy powder having a volume-average particle size of 10 ?m or less, onto a surface of a skeleton of a resin formed body having a three-dimensional mesh-like structure; a step of plating with nickel the surface of the skeleton of the resin formed body onto which the coating material has been applied; a step of removing the resin formed body; and a step of diffusing the added metal into the nickel by a heat treatment.

Abstract: Provided is a capacitor in which, even in the case of a high maximum charging voltage, decomposition of the electrolyte can be suppressed and charging and discharging can be performed with stability. The capacitor includes a positive electrode containing a positive-electrode active material, a negative electrode containing a negative-electrode active material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte, wherein the positive-electrode active material contains a porous carbon material, in a volume-based pore size distribution of the porous carbon material, a cumulative volume of pores having a pore size of 1 nm or less accounts for 85% or more of a total pore volume, the porous carbon material has a crystallite size of 1 to 10 nm, the porous carbon material contains an oxygen-containing functional group, and a content of the oxygen-containing functional group is 3.3 mol % or less.

Abstract: Provided is a method for producing an aluminum film having a mirror surface and reduced residual stress. A method for producing an aluminum film includes electrodepositing aluminum on a surface of a substrate in an electrolyte solution, in which the electrolyte solution is obtained by adding, to a molten salt composed of aluminum chloride and an alkylimidazolium chloride, at least one compound A selected from the group consisting of an organic solvent, an organic polymer compound having a number-average molecular weight of 200 to 80,000, and a nitrogen-containing heterocyclic compound having 3 to 14 carbon atoms, and a compound B having an amino group.

Abstract: Provided are a three-dimensional net-like aluminum porous body in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body; a current collector and an electrode each using the aluminum porous body; and methods for producing these members. The porous body is a three-dimensional net-like aluminum porous body in a sheet form, for a current collector, in which the diameter of cells in the porous body is uneven in the thickness direction of the porous body. When a cross section in the thickness direction of the three-dimensional net-like aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, the average cell diameter of the regions 1 and 3 is preferably different from the cell diameter of the region 2.

Abstract: An electricity storage device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte. The electrolyte contains anions and cations. The cations include at least lithium ions. The positive electrode active material includes a first carbonaceous material and a second carbonaceous material. The first carbonaceous material realizes a capacity by means of a first reaction in which the anions are adsorbed and desorbed. The second carbonaceous material realizes a capacity by means of a second reaction in which the anions are intercalated and deintercalated.

Abstract: Provided is an aluminum plating solution capable of continuously manufacturing an aluminum film, the surface of which is smooth and which has good elongation. The aluminum plating solution capable of electrodepositing aluminum on a surface of a base contains, as components, (A) an aluminum halide, (B) at least one compound selected from the group consisting of alkylimidazolium halides, alkylpyridinium halides, and urea compounds, and (C1) at least one selected from the group consisting of ammonium salts, phosphonium salts, sulfonium salts, amine compounds, phosphine compounds, and sulfide compounds. The component (C1) has, as at least one side chain, a straight-chain or branched alkyl group having 8 or more and 36 or less carbon atoms. A mixing ratio of the component (A) and the component (B) is in a range of 1:1 to 3:1 in terms of molar ratio. A concentration of the component (C1) is 1.0 g/L or more and 45 g/L or less.

Abstract: A current collector included in a fuel cell, the fuel cell including a membrane electrode assembly including a solid polymer electrolyte layer and a pair of electrode layers formed to sandwich the solid polymer electrolyte layer, the current collector stacked on each electrode layer, and a gas flow path for supply of a gas to each electrode layer, the current collector including a metal porous body which is stacked on the electrode layer, has a flowing gas supplied to the electrode layer, and is rendered conducting to the electrode layer, and the metal porous body including an electrically conductive layer containing electrically conductive particles fixed to a corrosion-resistant and water-repellent resin at least on a side of the electrode layer.

Abstract: Provided is a porous current collector which is used for a fuel electrode and has a high gas reforming function and high durability. A porous current collector 9 is provided adjacent to a fuel electrode 4 of a fuel cell 101 that includes a solid electrolyte layer 2, the fuel electrode 4 disposed on one side of the solid electrolyte layer, and an air electrode 3 disposed on the other side. The porous current collector includes a porous metal body 1 and a first catalyst 20. The porous metal body has an alloy layer 12a at least on a surface thereof, the alloy layer containing nickel (Ni) and tin (Sn). The first catalyst, which is in the form of particles, is supported on a surface of the alloy layer, the surface facing pores of the porous metal body, and is capable of processing a carbon component contained in a fuel gas that flows inside the pores.

Abstract: 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.

Abstract: 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 (Ni3Sn), 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 (Ni3Sn) and that has a chromium content ratio of less than 1.5% by mass.

Abstract: An inexpensive porous current collector having high durability is provided by forming a silver layer having high strength on a current collector formed from a nickel porous base material. Porous current collectors 8a and 9a are used in a fuel cell 101 including a solid electrolyte layer 2, a first electrode layer 3 on one side of the solid electrolyte layer, and a second electrode layer 4 on the other side. The porous current collectors each include: an alloy layer 60a, which is formed from a tin (Sn)-containing alloy, at least on the surfaces of continuous pores 52 of a nickel porous base material 60 having the continuous pores 52; and a silver layer 55 stacked on the alloy layer.

Abstract: The invention offers an electrode material that can accomplish both high capacity and high output and a battery, a nonaqueous-electrolyte battery, and a capacitor all incorporating the electrode material. The electrode material has a sheet-shaped aluminum porous body carrying an active material. The above-described aluminum porous body has a skeleton structure that is formed of an aluminum layer and that has a vacant space at the interior. When observed by performing cutting in a direction parallel to the direction of thickness of the sheet, the above-described vacant space in the skeleton structure has an average area of 500 ?m2 or more and 6,000 ?m2 or less.

Abstract: A capacitor includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active material held on the positive electrode current collector. The positive electrode active material contains activated carbon. The activated carbon has a carboxyl group, and an amount of desorption of carboxyl group per unit mass of the activated carbon is 0.03 ?mol/g or less when the activated carbon is heated with a temperature increase from 300° C. to 500° C. The capacitor has an upper-limit voltage Vu for charging and discharging. The upper-limit voltage Vu of a lithium-ion capacitor is 4.2 V or more. The upper-limit voltage Vu of an electric double-layer capacitor is 3.3 V or more.

Abstract: Provided are a manufacturing method and a manufacturing apparatus for an aluminum film in which moisture and oxygen do not intrude into a plating chamber.

Abstract: Provided is an aluminum plating solution that has a wide current density range in which aluminum plating can be performed and that has a low solution resistance. The aluminum plating solution contains an aluminum halide, at least one selected from the group consisting of an alkylimidazolium halide, an alkylpyridinium halide, and a urea compound, and an ammonium salt represented by the general formula (1) below. A concentration of the ammonium salt is 1 g/L or more and 45 g/L or less. NR4+.X???General formula (1) In the general formula, R each represent a hydrogen atom or an alkyl group which may have a side chain and which has 15 or less carbon atoms, X represents a halogen atom, and R may be the same or different from each other.