Solid electrolytic capacitor with interlayer crosslinking
AssigneeKemet Electronics Corporation
InventorsAntony P. Chacko, Danny Yiu Kai Hui
Life of this patent
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Abstract
A method for preparing a solid electrolytic capacitor and an improved solid electrolytic capacitor is provided. The method includes providing an anode, forming a dielectric on the anode and forming a cathode on the dielectric wherein the cathode comprises interlayers. At least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality. The oligomer or polymer with multifunctional or multiple reactive groups on one layer react with the crosslinkable functionality in the adjacent layer.
Claims24
A method for preparing a solid electrolytic capacitor comprising:
- providing an anode;
- forming a dielectric on said anode;
- forming a cathode on said dielectric wherein said cathode comprises interlayers and at least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality;
- and
- wherein said oligomer or polymer with multifunctional or multiple reactive groups on one layer react with said crosslinkable functionality in said adjacent layer.
A method for preparing a solid electrolytic capacitor comprising:
- providing an anode;
- forming a dielectric on said anode;
- forming a cathode on said dielectric wherein said cathode comprises interlayers and at least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality;
- and
- wherein said oligomer or polymer with multifunctional or multiple reactive groups on one layer react with said crosslinkable functionality in said adjacent layer wherein said crosslinkable functionality is selected from the group consisting of carboxylic, hydroxyl, amine, epoxy, anhydride, isocyanate, imide and amide.
A method for preparing a solid electrolytic capacitor comprising:
- providing an anode;
- forming a dielectric on said anode;
- forming a cathode on said dielectric wherein said cathode comprises interlayers and at least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality;
- and
- wherein said oligomer or polymer with multifunctional or multiple reactive groups on one layer react with said crosslinkable functionality in said adjacent layer wherein said crosslinkable functionality includes compounds and polymers comprising melamines, isocyanates, epoxies, hexamethoxymelamines, crosslinkable polyesters, glyoxals, furfural aldehydes and melamine formaldehyde condensates.
A method for preparing a solid electrolytic capacitor comprising:
- providing an anode;
- forming a dielectric on said anode;
- forming a cathode on said dielectric wherein said cathode comprises interlayers and at least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality;
- and
- wherein said oligomer or polymer with multifunctional or multiple reactive groups on one layer react with said crosslinkable functionality in said adjacent layer wherein said oligomer or polymer is a polyester comprising carboxylic acid with an acid number of from about 3 to 100 (mg KOH/g resin solids).
A method for preparing a solid electrolytic capacitor comprising:
- providing an anode;
- forming a dielectric on said anode;
- forming a cathode on said dielectric wherein said cathode comprises interlayers and at least one interlayer comprises a monomer, oligomer or polymer with multifunctional or multiple reactive groups and an adjacent layer comprises a molecule with crosslinkable functionality;
- and
- wherein said oligomer or polymer with multifunctional or multiple reactive groups on one layer react with said crosslinkable functionality in said adjacent layer wherein at least one interlayer further comprises organic or inorganic particles of fibers with reactive functional groups.
A capacitor comprising:
- an anode;
- a dielectric on said anode;
- a cathode on said dielectric wherein said cathode comprises interlayers wherein at least one interlayer of said interlayers comprises a monomer, oligomer or polymer with multifunctional or multiple groups and an adjacent interlayer comprises a molecule with cross-linked to said multifunctional or multiple groups.
A capacitor comprising:
- an anode;
- a dielectric on said anode;
- a cathode on said dielectric wherein said cathode comprises interlayers wherein at least one interlayer of said interlayers comprises a monomer, oligomer or polymer with multifunctional or multiple groups and an adjacent interlayer comprises a molecule with cross-linked to said multifunctional or multiple groups wherein at least one said interlayer further comprises at least one of organic or inorganic particles or fibers with reactive functional groups, carbon particle filled polymer, a metal particle filled polymer, a conductive particle filled polymer, particles of fibers with reactive functional groups or crosslinkable groups.
Dependencies are inferred from the claim text.