一种组合物、电容器用聚合物及电容器

    公开(公告)号:WO2021121174A1

    公开(公告)日:2021-06-24

    申请号:PCT/CN2020/136011

    申请日:2020-12-14

    Abstract: 为克服现有电解电容器存在金属箔氧化膜腐蚀引起的耐压下降及漏电流增大的问题,本发明提供了一种组合物,包括聚合单体、磷酸酯类化合物和封端剂;所述聚合单体包括3,4-乙烯二氧噻吩类聚合单体;所述封端剂包括结构式1所示的化合物;其中,R4选自H或碳原子数为1~6的烃基。同时,本发明还公开了由上述组合物聚合得到的电容器用聚合物以及包括上述电容器用聚合物的电容器。本发明提供的组合物聚合得到的聚合物对金属箔上的氧化膜能够起到修复和保护的作用,显著减少电容器金属箔上氧化膜破坏的发生。

    SOLID ELECTROLYTIC CAPACITOR WITH CONDUCTIVE POLYMER LAYER ATTAINING EXCELLENT METAL ION MIGRATION RESISTANCE

    公开(公告)号:WO2021018999A1

    公开(公告)日:2021-02-04

    申请号:PCT/EP2020/071483

    申请日:2020-07-30

    Abstract: The present invention relates to a capacitor comprising i) an electrode body comprising an electrode material, wherein a dielectric layer comprising a dielectric material at least partially covers a surface of the electrode body; ii) a solid electrolyte layer comprising a solid electrolyte material that at least partially covers a surface of the dielectric layer, wherein the solid electrolyte material comprises a conductive polymer; iii) an anode contact that is in contact with the electrode body and that comprises copper, metal-plated copper or a copper-containing alloy; and iv) a cathode contact that is in contact with the solid electrolyte layer; wherein the capacitor further comprises at least one metal ion migration inhibitor. The present invention also relates to a process for the production of a capacitor, to a capacitor obtainable by such a process, to electronic circuit comprising the capacitor according to present invention and to the use of these capacitors in electronic circuits.

    DELAMINATION-RESISTANT SOLID ELECTROLYTIC CAPACITOR

    公开(公告)号:WO2020236566A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2020/033086

    申请日:2020-05-15

    Inventor: TEZUKA, Yasuyuki

    Abstract: A solid electrolytic capacitor that comprises a capacitor element that contains a sintered porous anode body, a dielectric that overlies the anode body, and a solid electrolyte that overlies the dielectric is provided. An anode lead wire extends from the capacitor element in a longitudinal direction, wherein the lead wire defines an external surface having a plurality of distinct recessed regions that are spaced apart along the longitudinal direction. A hydrophobic coating is disposed on at least a portion of the external surface of the anode lead wire. Further, an anode termination is in electrical connection with the anode lead wire and a cathode termination is in electrical connection with the solid electrolyte.

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