Kemet Electronics Corporation

Bic Corporation

Qingping Chen

Antony P Chacko

Yaru Shi

Philip Michael Lessner

Ajaykumar Bunha

Randolph Stephen Hahn

Hong Zhang

Yang Jin

Michael T Nowak

John Tony Kinard

Yongjian Qiu

Brian John Melody

David Alexander Wheeler

Chris Stolarski

Albert Kennedy Harrington

Yuri Freeman

Lei Xu

Keith R Brenneman

Daniel Francis Persico

Steven C Hussey

Elisabeth Crittendon Key

Zhen Wu

Phillip Michael Lessner

Kim Pritchard

Randy Hahn

Liancai Ning

John Joseph Ols

Javaid Qazi

Anita Melody, Legal Representative

Cynthia L Prince

Chenyi Gu

Kristen Key

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 &#x3bc;FV/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.

Electrolytic capacitor having a higher cap recovery and lower ESR

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.

Electrolytic capacitor and process for forming an electrolytic capacitor

An improved formulation of conductive polymer is provided. The formulation 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:ABC&#x2003;&#x2003;Formula Awherein:A is polystyrenesulfonic acid or salt of polystyrenesulfonate;B and C separately represent polymerized units substituted by a group selected from:&#x2014;C(O)ORwherein Ris selected from the group consisting of:&#x2014;(CHR)&#x2014;R. All other groups are defined. The conductive polymer has an average particle size of at least 1 nm to no more than 10 microns.

Formulation for use with conducting polymers in solid electrolytic capacitors

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.

Conductive polymer capacitor for improved reliability

A dispersion comprising first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and said polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns and the second particles have an average particle diameter of at least 1 nm to no more than 600 nm.

Conductive polymer dispersion for improved reliability

Process for forming an electrolytic capacitor having a higher cap recovery and lower ESR

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 ABCas described herein.

Polyanion copolymers for use with conducting polymers in solid electrolytic capacitors

A capacitor, and process for forming a capacitor, is described wherein the capacitor comprises a conductive polymer layer. The conductive polymer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and said polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns and the second particles have an average particle diameter of at least 1 nm to no more than 600 nm.

A capacitor and process for forming the capacitor, is provided wherein the capacitor comprises a conductive polymer layer. The conductive polymer comprises first particles comprising conductive polymer and polyanion and second particles comprising the conductive polymer and said polyanion wherein the first particles have an average particle diameter of at least 1 micron to no more than 10 microns and the second particles have an average particle diameter of at least 1 nm to no more than 600 nm.

Process for forming a solid electrolytic capacitor

An improved process for forming an electrolytic capacitor is provided. The process comprises: providing an anode with an anode wire extending from the anode body; forming a dielectric on the anode to form an anodized anode; applying a first slurry wherein the first slurry comprises conducting polymer and polyanion, wherein the polyanion and conducting polymer are in a first weight ratio thereby forming a first slurry layer; and applying a second slurry on the first slurry layer wherein the second slurry comprises the conducting polymer and said polyanion and wherein the polyanion and the conducting polymer are in a second weight ratio wherein the second weight ratio is lower than the first weight ratio.

Conductive polymer dispersion with enhanced coverage

An improved process for forming a conjugated thiophene precursor is described as in the formation of an improved polymer prepared from the conjugated thiophene and an improved capacitor formed from the improved polymer. The improved process includes forming a thiophene mixture comprising thiophene monomer, unconjugated thiophene oligomer, optionally a solvent and heating the thiophene mixture at a temperature of at least 100&#xb0; C. to no more than the lower of 250&#xb0; C. or the boiling point of a component of said thiophene mixture with the lowest boiling point temperature.

Preparation of conjugated dimer and products formed therefrom

A method for forming a hermetically sealed capacitor including: forming an anode; forming a dielectric on the anode; forming a conductive layer on the dielectric thereby forming a capacitive element; inserting the capacitive element into a casing; electrically connecting the anode to an exterior anode connection; electrically connecting the cathode to an exterior cathode connection; filling the casing with an atmosphere comprising a composition, based on 1 kg of atmosphere, of at least 175 g to no more than 245 g of oxygen, at least 7 g to no more than 11 g of water, at least 734 grams to no more than 818 grams of nitrogen and no more than 10 grams of a minor component; and hermetically sealing the casing with the atmosphere with the capacitive element contained in the casing.

Utilization of moisture in hermetically sealed solid electrolytic capacitors and capacitors made thereof

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Simpsonville, SC, United States of America

Qingping Chen