Sumitomo Electric Industries, Limited

Sumitomo Electric Toyama Co., Ltd.

Primearth Ev Energy Co., Ltd.

Toyota Battery Co., Ltd.

Koutarou Kimura

Kazuki Okuno

Akihisa Hosoe

Kengo Goto

Junichi Nishimura

Hajime Ota

Hideaki Sakaida

Masatoshi Majima

Koji Nitta

Shinji Inazawa

Yusuke Shimizu

Shoichiro Sakai

Tomoyuki Awazu

Hitoshi Tsuchida

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 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.

Three-dimensional network aluminum porous body, electrode using the aluminum porous body, and nonaqueous electrolyte battery, capacitor and lithium-ion capacitor with nonaqueous electrolytic solution, each using the electrode

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.

Method for producing aluminum film

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 &#x3bc;mor more and 6,000 &#x3bc;mor less.

Electrode material; and battery, nonaqueous-electrolyte battery, and capacitor all incorporating the material

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.

Method for producing electrode for electrochemical element

It is an object of the present invention to provide a current collector including an aluminum porous body suitable for an electrode for a nonaqueous electrolyte battery and an electrode for a capacitor electrode, and an electrode using the current collector. In the three-dimensional network aluminum porous body for a current collector of the present invention, when a sheet-shaped three-dimensional aluminum porous body is divided in the width direction into a central region and two end regions with the central region situated therebetween, the weight per unit area of aluminum in the aluminum porous body at the two end regions is larger than the weight per unit area of aluminum in the aluminum porous body at the central region.

Three-dimensional network aluminum porous body for current collector, and current collector, electrode, nonaqueous electrolyte battery, capacitor and lithium-ion capacitor, each using aluminum porous body

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.

Electrochemical element

A method for producing an aluminum film by electrodepositing aluminum on a base in an electrolytic cell to which a liquid electrolyte containing a molten salt is fed includes adjusting a concentration of an additive in such a manner that a measured value of an overvoltage is within a predetermined range on the basis of a predetermined relationship between the overvoltage and the concentration of the additive added to the molten salt upon electrodepositing aluminum in the liquid electrolyte.

Method for producing aluminum film and method for producing aluminum foil

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.

Three-dimensional network aluminum porous body for current collector, electrode using the aluminum porous body, and battery, capacitor and lithium-ion capacitor each using the electrode

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. 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.

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%.Porosity(%)={1&#x2212;(volume of electrode material)/(apparent volume of electrode)}&#xd7;100

Electrode for electrochemical element and method for producing the same

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.

Three-dimensional network aluminum porous body, electrode using the aluminum porous body, and nonaqueous electrolyte battery, capacitor using nonaqueous electrolytic solution and lithium-ion capacitor using nonaqueous electrolytic solution, each using the electrode

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.

Electrode using three-dimensional network aluminum porous body, and nonaqueous electrolyte battery, capacitor and lithium-ion capacitor with nonaqueous electrolytic solution, each using the electrode

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.

Current collector using three-dimensional network aluminum porous body, electrode using the current collector, and nonaqueous electrolyte battery, capacitor and lithium-ion capacitor with nonaqueous electrolytic solution, each using the electrode, and method for producing the electrode

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Osaka, Japan

Koutarou Kimura