Abstract: It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body for a current collector which is suitably used for electrodes for nonaqueous electrolyte batteries and electrodes for capacitors, an electrode and a capacitor each using the same. In such a three-dimensional network aluminum porous body for a current collector, the aluminum porous body has been made to have a compressive strength in a thickness direction of 0.2 MPa or more in order to efficiently fill an active material into the sheet-shaped three-dimensional network aluminum porous body.

Abstract: It is an object of the present invention to provide a three-dimensional network aluminum porous body which can be used for a process continuously producing an electrode and enables to produce a current collector having small electric resistance in the current collecting direction, and an electrode using the aluminum porous body, and a production method thereof. In a sheet-shaped three-dimensional network aluminum porous body for a current collector, when one of two directions orthogonal to each other is taken as an X-direction and the other is taken as a Y-direction, a cell diameter in the X-direction of the three-dimensional network aluminum porous body differs from a cell diameter in the Y-direction thereof.

Abstract: It is an object of the present invention to provide an electrochemical element which has a high capacity and is low in cost. The electrochemical element of the present invention is an electrochemical element including an electrode for an electrochemical element, wherein a current collector of positive electrode and/or a current collector of negative electrode is a metal porous body having continuous pores and a mixture containing an active material is filled into the continuous pores.

Abstract: The method for producing an electrode for an electrochemical element of the present invention includes a slurry filling step of filling a slurry containing an active material into continuous pores of an aluminum porous body having the continuous pores, and a slurry drying step of drying the slurry filled, and in this method, after the slurry drying step, an electrode for an electrochemical element is produced without undergoing a compressing step of compressing the aluminum porous body having the slurry filled therein and dried. In the electrode, a mixture containing an active material is filled into continuous pores of an aluminum porous body having the continuous pores, and porosity (%) of the aluminum porous body, the porosity being represented by the following equation, is 15 to 55%.

Abstract: In an electrode according to the present invention including a three-dimensional network aluminum porous body as a base material, the electrode is a sheet-shaped electrode, and a cell of the three-dimensional network aluminum porous body has an elliptic shape having a minor axis in the thickness direction of the electrode in a cross section parallel to the longitudinal direction and thickness direction of the electrode, and a cell of the three-dimensional network aluminum porous body has an elliptic shape having a minor axis in the thickness direction of the electrode in a cross section parallel to the width direction and thickness direction of the electrode. The electrode is preferably obtained by subjecting the three-dimensional network aluminum porous body to at least a current collecting lead welding step, an active material filling step and a compressing step.

Abstract: It is an object of the present invention to provide a method for producing an electrode for an electrochemical element at low cost. The method for producing an electrode for an electrochemical element of the present invention includes a slurry preparation step of preparing a slurry of a mixture containing an active material, a slurry filling step of filling the slurry into continuous pores of an aluminum porous body having the continuous pores, and a slurry drying step of drying the filled slurry, wherein in the slurry preparation step, a slurry is prepared by using water as a solvent.

Abstract: A three-dimensional network aluminum porous body in which the amount of aluminum forming a skeleton of the three-dimensional network aluminum porous body is uneven in the thickness direction, and a current collector and an electrode each using the aluminum porous body, and a manufacturing method thereof. In such a sheet-shaped three-dimensional network aluminum porous body for a current collector, the amount of aluminum forming a skeleton of the three-dimensional network aluminum porous body is uneven in the thickness direction. For example, in the case where a cross section in the thickness direction of the three-dimensional network aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, each region is configured so that the average of the amounts of aluminum in the region 1 and the region 3 differs from the amount of aluminum in the region 2.

Abstract: It is an object of the present invention to provide a method for producing an electrode for an electrochemical element, which can easily adjust a capacity and can produce the electrochemical element at low cost. The method for producing an electrode for an electrochemical element of the present invention includes a thickness adjustment step of compressing an aluminum porous body having continuous pores to adjust the thickness of the aluminum porous body to a predetermined thickness, and a filling step of filling the aluminum porous body, the thickness of which is adjusted, with an active material.

Abstract: The present invention aims at providing an electrode for an electrochemical element having adequately high capacity and output. The electrode for an electrochemical element of the present invention has a feature in that a mixture containing an active material, a conduction aid and a binder is filled into continuous pores of an aluminum porous body having the continuous pores, and the content ratio of the conduction aid in the mixture is 0 to 4 mass %. Further, the electrode for an electrochemical element of the present invention has a feature in that a mixture containing an active material, a conduction aid and a binder is filled into continuous pores of an aluminum porous body having the continuous pores, and the content ratio of the binder in the mixture is less than 5 mass %.

Abstract: The present invention provides a three-dimensional network aluminum porous body in which the cell diameter of the three-dimensional network aluminum porous body is uneven in the thickness direction, and a current collector and an electrode respectively using the aluminum porous body, and a production method thereof. That is, such a sheet-shaped three-dimensional network aluminum porous body for a current collector has a cell diameter uneven in the thickness direction. Particularly, it is preferred that when a cross section in the thickness direction of the three-dimensional network aluminum porous body is divided into three regions of a region 1, a region 2 and a region 3 in this order, the average of the cell diameter in the region 1 and the cell diameter in the region 3 differs from the cell diameter in the region 2.

Abstract: It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body which is suitably used as current collector base materials of an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor using a nonaqueous electrolytic solution, and an electrode, a capacitor and a lithium-ion capacitor, each using the sheet-shaped three-dimensional network aluminum porous body. For this object, the three-dimensional network aluminum porous body for a current collector of the present invention is a sheet-shaped three-dimensional network aluminum porous body, and a skeleton forming the aluminum porous body has a surface roughness (Ra) of 3 ?m or more, and preferably 3 ?m or more and 50 ?m or less.

Abstract: It is an object of the present invention to provide 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. The present invention provides a long sheet-shaped three-dimensional network aluminum porous body 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: It is an object of the present invention to provide an electrode using a current collector made of an aluminum porous body which is suitably used for an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor, and a method for producing the electrode. In the current collector of the present invention, a strip-shaped compressed part compressed in a thickness direction is formed at one end part of a three-dimensional network aluminum porous body and a tab lead is bonded to the compressed part by welding. The width of the compressed part is 2 to 10 mm. Further, the electrode is formed by filling the current collector with an active material.

Abstract: A porous metal body containing continuous pores and having a low oxygen content is provided by decomposing a porous resin body that contains continuous pores and has a layer of a metal thereon by heating the porous resin body at a temperature equal to or less than the melting point of the metal while the porous resin body is immersed in a first molten salt and a negative potential is applied to the metal layer; and a method for producing the porous metal body is provided.

Abstract: A porous metal body containing continuous pores and having a low oxygen content is provided by decomposing a porous resin body that contains continuous pores and has a layer of a metal thereon by heating the porous resin body at a temperature equal to or less than the melting point of the metal while the porous resin body is immersed in a first molten salt and a negative potential is applied to the metal layer; and a method for producing the porous metal body is provided.

Abstract: Provided is a method for readily removing urethane resin without causing oxidation of aluminum, from an aluminum structure in which an aluminum film is formed on the surface of a urethane resin porous body having a three-dimensional network structure: a method for producing an aluminum porous body, including forming an aluminum film having a purity of 99.9% by mass or more on a surface of a urethane resin porous body having a three-dimensional network structure to provide an aluminum structure including the urethane resin porous body and the aluminum film, and subjecting the aluminum structure to a heat treatment at 370° C. or more and less than 660° C. in the air to remove urethane resin and to provide an aluminum porous body.

Abstract: It is an object of the present invention to provide an aluminum porous body for a current collector in which electric resistivity is reduced to enhance current collecting performance, and an electrode, a nonaqueous electrolyte battery, a capacitor and a lithium-ion capacitor each using the aluminum porous body for a current collector. Such a sheet-shaped three-dimensional network aluminum porous body of the present invention is a three-dimensional network aluminum porous body for a current collector including an electric resistivity in an in-plane direction and in a thickness direction of 0.5 m?cm or less. An electrode can be configured by using the three-dimensional network aluminum porous body for a current collector, and further a nonaqueous electrolyte battery, a capacitor and a lithium-ion capacitor can be configured by using the electrode.

Abstract: The present invention provides an electrode current collector for a secondary battery or the like, wherein a compressed part for attaching a tab lead to an end part of the three-dimensional network aluminum porous body to be used as an electrode current collector of a secondary battery, a capacitor using a nonaqueous electrolytic solution or the like is formed, and a method for producing the same. That is, the present invention provides a three-dimensional network aluminum porous body for a current collector having a compressed part compressed in a thickness direction for connecting a tab lead to its end part, wherein the compressed part is formed at a central part in the thickness direction of the aluminum porous body.

Abstract: A surface of a porous resin body having a three-dimensional network structure can be plated with aluminum at a uniform thickness and thus a high-purity aluminum structure is formed. A method for producing an aluminum structure includes a step of plating a resin porous body, which has a three-dimensional network structure and has a surface that has been made electrically conductive, with aluminum in a molten-salt bath, in which the molten salt is a salt mixture of aluminum chloride and an organic salt and plating is conducted while controlling the temperature of the molten-salt bath to be 45° C. or higher and 100° C. or lower. Preferably, the molten-salt bath further contains 1,10-phenanthroline at a concentration of 0.25 g/l or more and 7 g/l or less.

Abstract: Provided is a structure for effectively utilizing a novel metal porous body, such as an aluminum porous body, having a three-dimensional network structure as a battery electrode. An air battery that uses oxygen as a positive electrode active material includes an aluminum porous body having a three-dimensional network structure, the aluminum porous body functioning as a positive electrode collector, wherein an electrode that includes a positive electrode layer containing a catalyst and a binder and provided on a surface of a skeleton of the aluminum porous body is used. Furthermore, provided are an electrode having continuous pores in a state where a positive electrode layer is provided on a surface of a skeleton of an aluminum porous body, an electrode having a continuous hollow portion inside a skeleton thereof, and an air battery including any of the electrodes.