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公开(公告)号:US10655241B2
公开(公告)日:2020-05-19
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:US11127533B2
公开(公告)日:2021-09-21
申请号:US16102682
申请日:2018-08-13
IPC分类号: H01G9/00 , H01G9/055 , H01G9/04 , H01G9/08 , H01G9/012 , H01G9/15 , H01G9/025 , H01G9/042 , H01G9/07
摘要: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil, a dielectric layer, a solid electrolyte layer, and a cathode lead-out layer. The anode foil includes a first part and a second part other than the first part. The first part has an etched surface, and a second part has an unetched surface. The dielectric layer is formed on the etched surface of the first part in the anode foil. The solid electrolyte layer is formed on at least a part of a surface of the dielectric layer. The cathode lead-out layer is formed on at least a part of a surface of the solid electrolyte layer. An insulating protective layer covers a boundary part between the first part and the second part as well as an end of the cathode lead-out layer and an end of the solid electrolyte layer.
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公开(公告)号:US10607787B2
公开(公告)日:2020-03-31
申请号:US15981704
申请日:2018-05-16
发明人: Kyohei Kobayashi , Yukiyasu Sugihara , Hiroshi Yoshida , Mitsuhisa Yoshimura , Hiromi Nakanishi
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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