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.

公开(公告)号：US11482382B2

公开(公告)日：2022-10-25

申请号：US16992714

申请日：2020-08-13

Applicant: KEMET Electronics Corporation

Inventor： Yaru Shi ,  Antony P. Chacko ,  Chenyi Gu ,  Ajaykumar Bunha ,  Qingping Chen

IPC: H01G9/00 ,  H01G9/028 ,  H01G9/15 ,  H01B1/12 ,  H01G9/042

Abstract: The invention is related to an improved capacitor and an improved process for forming a capacitor. The process comprises forming an anode comprising a dielectric on the anode. A cathode layer is then formed on the dielectric wherein the cathode layer comprises a self-doped conductive polymer and a cross-linker wherein a weight ratio of crosslinker to self-doped conductive polymer is at least 0.01 to no more than 2.

公开(公告)号：US11177076B2

公开(公告)日：2021-11-16

申请号：US17023870

申请日：2020-09-17

Applicant: KEMET Electronics Corporation

Inventor： Ajaykumar Bunha ,  Antony P. Chacko ,  Qingping Chen ,  Yaru Shi ,  Philip M. Lessner

IPC: H01G9/00 ,  C09D5/24 ,  C09D165/00 ,  C09D4/06 ,  C09D125/18 ,  C09D7/65 ,  H01G9/15 ,  H01G9/025 ,  C08F12/30 ,  H01B1/12 ,  C08F212/14 ,  C09D133/14 ,  H01G9/028 ,  H01G9/042

Abstract: A capacitor comprising an anode foil; and a conductive polymer layer on the anode foil. The conductive polymer layer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and the polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns. The second particles have an average particle diameter of at least 1 nm to no more than 600 nm.

公开(公告)号：US10770240B2

公开(公告)日：2020-09-08

申请号：US16038609

申请日：2018-07-18

Applicant: KEMET Electronics Corporation

Inventor： Victor Andoralov ,  Débora Sá ,  Alexandre Guerreiro Fonseca ,  Antony P. Chacko ,  Yaru Shi ,  Philip M. Lessner

IPC: H01G11/04 ,  H01G11/26 ,  H01G11/48 ,  H01G11/86 ,  H01G11/52 ,  H01G11/84 ,  H01G11/32 ,  H01G11/58 ,  H01G11/74

Abstract: An improved capacitor is described wherein the capacitor comprises a working element. The working element comprises a first dielectric and an anode conductive polymer layer on the first dielectric. The working element also comprises a cathode and a separator between the anode conductive polymer layer and the cathode wherein the separator comprises a separator conductive polymer layer wherein at least one of the anode conductive polymer layer or the separator conductive polymer layer is crosslinked. The working element also comprises a liquid electrolyte.

公开(公告)号：US20180330888A1

公开(公告)日：2018-11-15

申请号：US16046154

申请日：2018-07-26

Applicant: KEMET Electronics Corporation

Inventor： Yaru Shi ,  Antony P. Chacko ,  Ajaykumar Bunha ,  Qingping Chen

IPC: H01G9/15 ,  H01G9/012 ,  H01G9/028 ,  H01G9/042 ,  H01G9/08 ,  H01G9/00 ,  H01G11/48

CPC classification number: H01G9/15 ,  H01G9/0036 ,  H01G9/012 ,  H01G9/028 ,  H01G9/0425 ,  H01G9/08 ,  H01G11/48 ,  Y10T29/417

Abstract: Provided is an improved capacitor formed by a process comprising: providing an anode comprising a dielectric thereon wherein the anode comprises a sintered powder wherein the powder has a powder charge of at least 45,000 μFV/g; and forming a first conductive polymer layer encasing at least a portion of the dielectric by applying a first slurry wherein the first slurry comprises a polyanion and a conductive polymer and wherein the polyanion and conductive polymer are in a weight ratio of greater than 3 wherein the conductive polymer and polyanion forms conductive particles with an average particle size of no more than 20 nm.

公开(公告)号：US20170338048A1

公开(公告)日：2017-11-23

申请号：US15672000

申请日：2017-08-08

Applicant: KEMET Electronics Corporation

Inventor： Yaru Shi ,  Antony P. Chacko ,  Hong Zhang ,  Qingping Chen ,  Lei Xu ,  Yang Jin ,  Zhen Wu

IPC: H01G9/042 ,  H01G9/07 ,  H01G9/012 ,  C09D5/24 ,  H01G9/00 ,  H01G9/15 ,  H01G9/025

CPC classification number: H01G9/042 ,  C09D5/24 ,  H01G9/0032 ,  H01G9/0036 ,  H01G9/012 ,  H01G9/025 ,  H01G9/028 ,  H01G9/052 ,  H01G9/07 ,  H01G9/15

Abstract: A method for forming a capacitor, a capacitor formed thereby and an improved composition for a conductive coating are described. The method includes providing an anode, forming a dielectric on the anode and forming a cathode layer over the dielectric by applying a monoamine, a weak acid and a conductive polymer.

公开(公告)号：US20140160632A1

公开(公告)日：2014-06-12

申请号：US14098664

申请日：2013-12-06

Applicant: Kemet Electronics Corporation

Inventor： Antony P. Chacko ,  Gopakumar Sivasankarapillai ,  Yaru Shi ,  Philip M. Lessner

IPC: H01G9/042 ,  H01G9/00

CPC classification number: H01G9/0425 ,  C09D5/24 ,  C09D177/12 ,  H01B1/124 ,  H01G9/0029 ,  H01G9/028 ,  H01G9/15 ,  Y10T29/417

Abstract: Provided herein is an improved capacitor and a method for forming an improved capacitor. The method includes providing an anode and forming a dielectric on the anode. A linear-hyperbranched polymer is formed and a conductive polymer dispersion is prepared comprising at least one conducting polymer, one polyanion and the linear-hyperbranched polymer. A layer of the conductive polymer dispersion if formed wherein said dielectric is between the anode and the layer.

Abstract translation: 本文提供了改进的电容器和形成改进的电容器的方法。 该方法包括提供阳极并在阳极上形成电介质。 形成线型超支化聚合物并制备包含至少一种导电聚合物，一个聚阴离子和线性超支化聚合物的导电聚合物分散体。 如果形成导电聚合物分散体的一层，其中所述电介质位于阳极和层之间。

公开(公告)号：US20210198469A1

公开(公告)日：2021-07-01

申请号：US17167176

申请日：2021-02-04

Applicant: KEMET Electronics Corporation

Inventor： Ajaykumar Bunha ,  Antony P. Chacko ,  Yaru Shi ,  Qingping Chen ,  Philip M. Lessner

IPC: C08L25/18 ,  H01G9/028 ,  H01G9/042 ,  C07C309/28 ,  C07C309/30 ,  H01G9/00 ,  H01G9/04 ,  H01G9/15 ,  H01M4/136 ,  H01M4/137

Abstract: An improved slurry of conductive polymer is provided. The slurry comprises a conductive polymer and a polyanion wherein the polyanion is a copolymer comprising groups A, B and C represented the ratio of Formula A: AxByCz   Formula A wherein: A is polystyrenesulfonic acid or salt of polystyrenesulfonate; B and C separately represent polymerized units substituted by a group selected from: —C(O)OR6 wherein R6 is selected from the group consisting of: —(CHR17)b—R18. All other groups are defined. The conductive polymer has an average particle size of at least 1 nm to no more than 10 microns.

公开(公告)号：US10947376B2

公开(公告)日：2021-03-16

申请号：US16411915

申请日：2019-05-14

Applicant: KEMET Electronics Corporation

Inventor： Ajaykumar Bunha ,  Antony P. Chacko ,  Yaru Shi ,  Qingping Chen ,  Philip M. Lessner

IPC: C08L25/18 ,  C07C309/30 ,  H01G9/042 ,  H01M4/137 ,  H01G9/00 ,  H01G9/028 ,  C07C309/28 ,  H01G9/04 ,  H01G9/15 ,  H01M4/136

Abstract: A capacitor and a method of making a capacitor, is provided with improved reliability performance. The capacitor comprises an anode; a dielectric on the anode; and a cathode on the dielectric wherein the cathode comprises a conductive polymer and a polyanion wherein the polyanion is a copolymer comprising groups A, B and C represented by Formula AxByCz as described herein.

公开(公告)号：US20210005396A1

公开(公告)日：2021-01-07

申请号：US17023870

申请日：2020-09-17

Applicant: KEMET Electronics Corporation

Inventor： Ajaykumar Bunha ,  Antony P. Chacko ,  Qingping Chen ,  Yaru Shi ,  Philip M. Lessner

IPC: H01G9/00 ,  H01G9/042 ,  C09D5/24 ,  C09D165/00 ,  C09D4/06 ,  C09D125/18 ,  C09D7/65 ,  H01G9/15 ,  H01G9/025 ,  C08F12/30 ,  H01B1/12 ,  C08F212/14 ,  C09D133/14 ,  H01G9/028

Abstract: An improved capacitor is provided wherein the capacitor comprising an anode foil; and a conductive polymer layer on the anode foil. The conductive polymer layer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and the polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns. The second particles have an average particle diameter of at least 1 nm to no more than 600 nm.