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    Tantalum capacitor with increased stability
    2.
    发明授权
    Tantalum capacitor with increased stability 有权

    公开(公告)号：US11776759B2

    公开(公告)日：2023-10-03

    申请号：US17116044

    申请日：2020-12-09

    Applicant: AVX Corporation

    Inventor： Pavel Kucharczyk ,  Miloslav Uher ,  Jan Petrzilek

    IPC: H01G9/025 ,  H01G9/042 ,  H01G9/15 ,  C08G61/12 ,  C08K5/544

    CPC classification number: H01G9/025 ,  C08G61/126 ,  H01G9/042 ,  H01G9/15 ,  C08G2261/11 ,  C08G2261/1452

    Abstract: A solid electrolytic capacitor containing a capacitor element is provided. The capacitor element contains an anode body that contains tantalum, a dielectric that overlies the anode body; and a solid electrolyte that overlies the dielectric. The solid electrolyte includes an intrinsically conductive polymer containing repeating thiophene units. Further, the capacitor exhibits a dielectric strength of about 0.6 volts per nanometer or more. The capacitor also exhibits a charge-discharge capacitance after being subjected to 3,000 cycles of a surge voltage and an initial capacitance prior to being subjected to the surge voltage, wherein the ratio of the charge-discharge capacitance to the initial capacitance is from about 0.75 to 1.

    Solid electrolytic capacitor for use in extreme conditions
    9.
    发明授权
    Solid electrolytic capacitor for use in extreme conditions 有权

    公开(公告)号：US10553365B2

    公开(公告)日：2020-02-04

    申请号：US16286701

    申请日：2019-02-27

    Applicant: AVX Corporation

    Inventor： Martin Biler ,  Jan Petrzilek

    IPC: H01G9/15 ,  H01G9/10 ,  H01G9/08 ,  H01G9/00

    Abstract: A capacitor assembly that is capable of performing under extreme conditions, such as at high temperatures and/or high voltages, is provided. The ability to perform at high temperature is achieved in part by enclosing and hermetically sealing the capacitor element within a housing in the presence of a gaseous atmosphere that contains an inert gas, thereby limiting the amount of oxygen and moisture supplied to the solid electrolyte of the capacitor element. Furthermore, the present inventors have also discovered that the ability to perform at high voltages can be achieved through a unique and controlled combination of features relating to the formation of the anode, dielectric, and solid electrolyte. For example, the solid electrolyte is formed from a combination of a conductive polymer and a hydroxy-functional nonionic polymer.

    Wet Electrolytic Capacitor for an Implantable Medical Device
    10.
    发明授权
    Wet Electrolytic Capacitor for an Implantable Medical Device 有权

    公开(公告)号：US10290430B2

    公开(公告)日：2019-05-14

    申请号：US14551183

    申请日：2014-11-24

    Applicant: AVX Corporation

    Inventor： Lotfi Djebara ,  Jan Petrzilek

    IPC: H01G9/145 ,  H01G9/00 ,  H01G9/052 ,  H01G9/035

    Abstract: A wet electrolytic capacitor containing a cathode, fluidic working electrolyte, and planar anode formed from an anodically oxidized sintered porous pellet is provided. The pellet may be formed from a pressed valve metal powder, which in turn, is formed by reacting an oxide of a valve metal compound (e.g., tantalum pentoxide) with a reducing agent that contains a metal having an oxidation state of 2 or more (e.g., magnesium). Through the use of such a powder, the present inventors have discovered that higher capacitance levels can be achieved than previously thought possible for the high voltage capacitors employed in implantable medical devices.

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