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    Solid electrolytic capacitor with improved reliability
    1.
    发明授权
    Solid electrolytic capacitor with improved reliability 有权

    公开(公告)号：US11935708B2

    公开(公告)日：2024-03-19

    申请号：US17831138

    申请日：2022-06-02

    Applicant: KEMET Electronics Corporation

    Inventor： Ajaykumar Bunha ,  Antony P. Chacko

    IPC: H01G9/15 ,  H01G9/028 ,  H01G9/07

    CPC classification number: H01G9/15 ,  H01G9/028 ,  H01G9/07

    Abstract: The present invention if related to an improved electrolytic capacitor and a method of making the improved electrolytic capacitor. The electrolytic capacitor comprises an anode comprising a dielectric layer on the anode. A first mordant layer is on the dielectric wherein the first mordant layer comprises a mordant compound of Formula A:




    wherein:

    R1 and R2 is independently selected from H; cation, linear alkyl, cyclic alkyl or substituted alkyl of 1 to 10 carbons;
    R3 is selected from —CR4R5R6 wherein R4 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n;
    R5 represents an alkyl of 1-20 carbons or an aryl of 6-20 carbons; R4 and R5 can be taken together to represent a cyclic alkyl or substituted cyclic alkyl or (—CR6OP(O)OR1OR2)n;
    R6 represents a hydrogen, an alkyl of 1-20 carbons or an aryl of 6-20 carbons; and
    n is an integer from 1 to 20; and
    a crosslinker. A primary conductive polymer layer is on the first mordant layer.

    Capacitors with improved power cycling
    2.
    发明授权
    Capacitors with improved power cycling 有权

    公开(公告)号：US11694851B2

    公开(公告)日：2023-07-04

    申请号：US17178631

    申请日：2021-02-18

    Applicant: KEMET Electronics Corporation

    Inventor： Antony P. Chacko ,  John Joseph Ols ,  Ajaykumar Bunha ,  Yaru Shi

    IPC: H01G9/15 ,  H01G9/028

    CPC classification number: H01G9/15 ,  H01G9/028

    Abstract: An improved electrolytic capacitor, and method of making the electrolytic capacitor, is provided. The electrolytic capacitor comprises an anode comprising a dielectric layer on the anode. A primary conductive polymer layer is on dielectric and a mordant layer on the primary conductive layer wherein the mordant layer comprises a mordant compound of Formula A;




    wherein:

    each of R1-R6 is independently selected from H and —PO(OR7)2 wherein each R7 is independently selected from H, substituted or unsubstituted alkyl of 1-20 carbons, substituted or unsubstituted aryl of 6-20 carbons or an alkylaryl of 7-21 carbons; with the proviso that at least one of R1-R6 is —PO(OH)2. A secondary conductive polymer layer is on the mordant layer.

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