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公开(公告)号：US10927469B2
公开(公告)日：2021-02-23
申请号：US16662898
申请日：2019-10-24
Applicant: UACJ CORPORATION
Inventor： Junji Nunomura , Yoichi Kojima , Mikito Ueda
Abstract: A production method of aluminum including: a step of synthesizing an aluminum compound from a mixture including a halogenated aluminum hydrate and a perfluoroalkylsulfonimide-type or perfluoroalkylsulfonamide-type ionic liquid represented by general formula (1); a step of dissolving the aluminum compound in a nitrile-based organic solvent to prepare an aluminum electrolyte; a step of adding at least one ligand selected from a phosphorus compound and an organic compound having an amide group to the aluminum electrolyte and dehydrating water molecules from a hydrate included in the aluminum electrolyte; and a step of electrodepositing aluminum on a cathode by allowing electricity to pass between an anode and the cathode in the aluminum electrolyte after the dehydrating step.
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公开(公告)号：US20190292670A1
公开(公告)日：2019-09-26
申请号：US16438324
申请日：2019-06-11
Applicant: UACJ Corporation
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima
Abstract: The method for producing an electrolytic aluminum foil of the present disclosure is a method for producing an electrolytic aluminum foil, the method including supplying an electrolytic solution in an electrolytic cell provided with a diaphragm between an anode and a cathode and depositing an aluminum foil on a surface of the cathode by electrolysis, wherein the diaphragm is made of aluminum having a purity of 85.0% or more and has a plurality of pores having an average pore diameter of 100 to 1000 μm.
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公开(公告)号：US11519090B2
公开(公告)日：2022-12-06
申请号：US16438324
申请日：2019-06-11
Applicant: UACJ Corporation
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima
Abstract: The method for producing an electrolytic aluminum foil of the present disclosure is a method for producing an electrolytic aluminum foil, the method including supplying an electrolytic solution in an electrolytic cell provided with a diaphragm between an anode and a cathode and depositing an aluminum foil on a surface of the cathode by electrolysis, wherein the diaphragm is made of aluminum having a purity of 85.0% or more and has a plurality of pores having an average pore diameter of 100 to 1000 μm.
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公开(公告)号：US11225725B2
公开(公告)日：2022-01-18
申请号：US16506081
申请日：2019-07-09
Applicant: UACJ CORPORATION
Inventor： Junji Nunomura , Yukio Honkawa , Yoichi Kojima , Mikito Ueda
Abstract: A method for producing aluminum includes: a dissolution step of dissolving a hydrate containing Al in water to prepare an aqueous solution that contains Al ions; an extraction step of bringing an organic phase that is composed of an extractant into contact with an aqueous phase that is composed of the aqueous solution to extract the Al ions in the aqueous phase into the organic phase; and an electrodeposition step of electrolyzing the organic phase as an electrolytic solution to electrodeposit metallic Al onto a surface of a cathode from the Al ions in the electrolytic solution.
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公开(公告)号：US20190276945A1
公开(公告)日：2019-09-12
申请号：US16418926
申请日：2019-05-21
Applicant: UACJ CORPORATION
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima , Koichi Ui
Abstract: The present disclosure provides a high-quality electrolytic aluminum foil which includes a smooth surface and an end portion containing no dendritic deposit, and a method for producing the same which can obtain the electrolytic aluminum foil at a high collection rate. An electrolytic aluminum foil of the present disclosure includes a surface having an arithmetic average height (Sa) of 0.15 μm or less, wherein when, for a size of a crystal grain present in a cross-sectional surface, a first maximum dimension as measured in a thickness direction of the cross-sectional surface is x (μm), and a second maximum dimension as measured in a width direction of the cross-sectional surface is y (μm), x and y satisfy (x+y)/2≤3 μm and 1≤x/y≤4.
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Patent Agency Ranking
公开(公告)号：US11035047B2
公开(公告)日：2021-06-15
申请号：US16418926
申请日：2019-05-21
Applicant: UACJ CORPORATION
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima , Koichi Ui
Abstract: The present disclosure provides a high-quality electrolytic aluminum foil which includes a smooth surface and an end portion containing no dendritic deposit, and a method for producing the same which can obtain the electrolytic aluminum foil at a high collection rate. An electrolytic aluminum foil of the present disclosure includes a surface having an arithmetic average height (Sa) of 0.15 μm or less, wherein when, for a size of a crystal grain present in a cross-sectional surface, a first maximum dimension as measured in a thickness direction of the cross-sectional surface is x (μm), and a second maximum dimension as measured in a width direction of the cross-sectional surface is y (μm), x and y satisfy (x+y)/2≤3 μm and 1≤x/y≤4.
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公开(公告)号：US10590555B2
公开(公告)日：2020-03-17
申请号：US15825794
申请日：2017-11-29
Applicant: UACJ Corporation
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima
Abstract: A method for producing high quality electrolytic aluminum foil excellent in peelability from a cathode surface is provided. A method for producing electrolytic aluminum foil according to the present disclosure is a method for producing electrolytic aluminum foil, comprising steps of depositing an aluminum film on a surface of a cathode in an electrolytic cell supplied with an electrolytic solution and comprising the cathode; and peeling the deposited aluminum film from the surface of the cathode to provide aluminum foil, wherein the cathode has surface roughness of an arithmetic average roughness (Ra) of 0.10 to 0.40 μm and a ten-point average roughness (Rz) of 0.20 to 0.70 μm.
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公开(公告)号：US20190330752A1
公开(公告)日：2019-10-31
申请号：US16506081
申请日：2019-07-09
Applicant: UACJ CORPORATION
Inventor： Junji Nunomura , Yukio Honkawa , Yoichi Kojima , Mikito Ueda
IPC: C25C3/18
Abstract: A method for producing aluminum includes: a dissolution step of dissolving a hydrate containing Al in water to prepare an aqueous solution that contains Al ions; an extraction step of bringing an organic phase that is composed of an extractant into contact with an aqueous phase that is composed of the aqueous solution to extract the Al ions in the aqueous phase into the organic phase; and an electrodeposition step of electrolyzing the organic phase as an electrolytic solution to electrodeposit metallic Al onto a surface of a cathode from the Al ions in the electrolytic solution.
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公开(公告)号：US20180080134A1
公开(公告)日：2018-03-22
申请号：US15825794
申请日：2017-11-29
Applicant: UACJ Corporation
Inventor： Yukio Honkawa , Junji Nunomura , Yoichi Kojima
Abstract: A method for producing high quality electrolytic aluminum foil excellent in peelability from a cathode surface is provided. A method for producing electrolytic aluminum foil according to the present disclosure is a method for producing electrolytic aluminum foil, comprising steps of depositing an aluminum film on a surface of a cathode in an electrolytic cell supplied with an electrolytic solution and comprising the cathode; and peeling the deposited aluminum film from the surface of the cathode to provide aluminum foil, wherein the cathode has surface roughness of an arithmetic average roughness (Ra) of 0.10 to 0.40 μm and a ten-point average roughness (Rz) of 0.20 to 0.70 μm.
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公开(公告)号：US20150004041A1
公开(公告)日：2015-01-01
申请号：US14370542
申请日：2012-11-01
Applicant: UACJ CORPORATION
Inventor： Yuichi Tanaka , Yoichi Kojima , Yukiou Honkawa
IPC: B22F3/11
CPC classification number: B22F3/11 , B22F3/02 , B22F3/1007 , B22F3/12 , B22F5/00 , B22F2003/1042 , B22F2999/00 , C22C1/0416 , C22C1/08 , C22C21/00 , H01M4/661 , H01M4/662 , H01M4/666 , H01M4/667 , H01M4/803 , B22F2201/10
Abstract: A method for manufacturing porous aluminum, comprising steps of: press-molding a powder mixture of aluminum powder and supporting powder under pressure of not lower than 200 MPa, the aluminum powder having a volume ratio of 5 to 30% with respect to a total volume of the powder mixture; sintering a press-molded body with heat treatment in an inert atmosphere within a temperature range of not lower than a melting point of the aluminum powder and lower than 700° C.; and removing the supporting powder from a sintered body. With this method, the porous aluminum having a high porosity and a uniform pore diameter, which is suitable for a current collector in a lithium-ion secondary battery and for a variety of filters, is readily manufactured.
Abstract translation: 一种制造多孔铝的方法，包括以下步骤：在不低于200MPa的压力下将铝粉和载体粉末的粉末混合物加压成型，所述铝粉体积相对于总体积的体积比为5至30％ 的粉末混合物; 在不低于铝粉熔点并低于700℃的惰性气氛中进行热处理烧结压模体; 并从烧结体中除去支撑粉末。 利用这种方法，容易制造适用于锂离子二次电池中的集电体和各种过滤器的孔隙率高，孔径均匀的多孔铝。
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