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1.发明申请公开(公告)号：US20210366660A1
公开(公告)日：2021-11-25
申请号：US17396635
申请日：2021-08-06
发明人： MIWA OGAWA , NAOMI KURIHARA , MITSUHISA YOSHIMURA
摘要： An electrode foil for an electrolytic capacitor includes an anode body foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal, the second metal being different from a first metal contained in the metal framework. An underlayer that is continuous with the first layer is provided between the metal framework and the first layer. The underlayer contains phosphorus and carbon.
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2.发明申请公开(公告)号：US20200373090A1
公开(公告)日：2020-11-26
申请号：US16984800
申请日：2020-08-04
摘要： An electrode foil for an electrolytic capacitor includes an anode electrode body including a base material part having a porous body portion, and a dielectric layer disposed on a surface of the porous body portion. The anode electrode body has a first main surface in which pores of the porous body portion are opened, a second main surface opposite to the first main surface, and an end surface connecting the first main surface and the second main surface. In the porous body portion, a first film thickness of the dielectric layer in an end surface vicinity region is larger than a second film thickness of the dielectric layer in a deep inner region, the end surface vicinity region being a region within a predetermined distance from the end surface, the deep inner region being a region located away from the first main surface and at a central portion in a direction parallel to the first main surface.
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公开(公告)号：US20180258548A1
公开(公告)日：2018-09-13
申请号：US15980132
申请日：2018-05-15
发明人： KYOHEI KOBAYASHI , YUKIYASU SUGIHARA , HIROSHI YOSHIDA , MITSUHISA YOSHIMURA , HIROMI NAKANISHI
摘要： A method for producing an electrode foil includes an electrolytic etching step of etching a metal foil containing first metal by applying current between the metal foil and an electrode in etching liquid while a principal surface of the metal foil faces the electrode. A masking member is disposed between the principal surface of the metal foil and the electrode so as to cover a partial region of the principal surface. The masking member is an electric conductor. The masking member is electrically connected with the metal foil.
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公开(公告)号：US20230274890A1
公开(公告)日：2023-08-31
申请号：US18003692
申请日：2021-07-15
发明人： MIWA OGAWA , NAOMI KURIHARA , MITSUHISA YOSHIMURA
摘要： An electrode foil for an electrolytic capacitor includes a base material containing a valve metal and a dissimilar metal composite layer covering a surface of the base material. The dissimilar metal composite layer includes a mixed region in which a first metal and a second metal are mixed. The second metal is different from the first metal. The mixed region constitutes at least 50% of the dissimilar metal composite layer in a thickness-wise direction of the dissimilar metal composite layer. Each of a content M1 of the first metal and a content M2 of the second metal with respect to all metals in the mixed region is 1 atomic % or more.
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公开(公告)号：US20220344105A1
公开(公告)日：2022-10-27
申请号：US17811265
申请日：2022-07-07
摘要： An electrolytic capacitor includes a capacitor element, a liquid component, a case housing the capacitor element and the liquid component, and a sealing member sealing the case. the capacitor element includes a porous sintered body including a dielectric layer, a cathode foil facing at least a part of the porous sintered body, and a conductive polymer covering at least a part of a surface of the dielectric layer. The conductive polymer is in contact with the cathode foil. And a void in the capacitor element is impregnated with the liquid component.
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公开(公告)号：US20230131142A1
公开(公告)日：2023-04-27
申请号：US17905498
申请日：2021-01-29
摘要： An electrode foil for an electrolytic capacitor includes: an anode body that includes a core part and a porous part disposed on a surface of the core part, and contains a first metal; a first dielectric layer that covers at least a part of the porous part; and a second dielectric layer that covers at least a part of the first dielectric layer. The second dielectric layer contains an oxide of a second metal. The first dielectric layer includes a first part having a thickness T1 and a second part having a thickness T2 smaller than the thickness T1.
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公开(公告)号：US20220115185A1
公开(公告)日：2022-04-14
申请号：US17426039
申请日：2020-02-19
摘要： A film production method for producing a layer containing a metal oxide, the film production method including: a heating step of heating a metal foil containing a first metal by bringing a part of the metal foil into contact with at least one heat generator; a first contact step of letting first gas containing a second metal to be in contact with both surfaces of the metal foil in a state where the part of the metal foil is supported; and a second contact step of letting second gas containing an oxidant to be in contact with the both surfaces of the metal foil in a state where the part of the metal foil is supported.
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8.发明申请公开(公告)号：US20210366661A1
公开(公告)日：2021-11-25
申请号：US17396767
申请日：2021-08-09
摘要： An electrode foil for an electrolytic capacitor includes a metal foil having a porous part, and a dielectric layer covering a surface of a metal framework constituting the porous part. The dielectric layer includes a first layer containing an oxide of a second metal different from a first metal contained in the metal framework. The first layer has a thickness T1. The first layer contains at least one kind of additive element selected from the group consisting of carbon, phosphorus, boron, and nitrogen. The first layer includes a first region from an outer surface of the first layer to a center of the first layer in a thickness direction, and a second region from the center to an inner surface of the first layer. A content of the at least one kind of additive element in the second region is greater than a content of the at least one kind of additive element in the first region.
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公开(公告)号：US20180261393A1
公开(公告)日：2018-09-13
申请号：US15981704
申请日：2018-05-16
发明人： KYOHEI KOBAYASHI , YUKIYASU SUGIHARA , HIROSHI YOSHIDA , MITSUHISA YOSHIMURA , HIROMI NAKANISHI
CPC分类号： H01G9/055 , C25F3/02 , C25F3/14 , C25F7/00 , H01G9/0032 , H01G9/0036 , H01G9/07 , H01G9/15
摘要： A method for producing an electrode foil includes: a first step of preparing a metal foil, the metal foil having a strip shape; a second step of disposing a masking member so as to cover part of a principal surface of the metal foil; and a third step of partially etching the principal surface of the metal foil by applying current between the metal foil and an electrode while the metal foil faces the electrode via the masking member in etching liquid after the second step. The masking member has a strip shape. In the second step, the masking member is disposed along a longitudinal direction of the metal foil so as to be separated from both side edges of the metal foil.
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