Solid electrolytic capacitor and method for manufacturing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsEmiko Igaki, Seigo Shiraishi, Masakazu Tanahashi, Sachiko Nobori, Hisataka Katoh
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Abstract
In the present invention, a capacitor element including a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer is provided with an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., and the capacitor element including the organic compound is arranged inside a package. The oxide film is repaired with the organic compound as a solvent by an application of a dc voltage.
Claims25
A solid electrolytic capacitor comprising a package and a capacitor element inside the package, the capacitor element comprising a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer,
- wherein the capacitor element contains an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., and
- wherein the organic compound provides an organic solvent at a temperature of said melting point, and thereby an electrolytic solution is provided having the organic solvent and ions eluted from the solid electrolytic layer.
A solid electrolytic capacitor comprising a package and a capacitor element inside the package, the capacitor element comprising a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer,
- wherein the capacitor element contains an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., and
- wherein the organic compound is at least one selected from the group consisting of alcohol, ester, ether and ketone.
A solid electrolytic capacitor comprising a package and a capacitor element inside the package, the capacitor element comprising a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer,
- wherein the capacitor element contains an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., wherein the organic compound is an amine.
A solid electrolytic capacitor comprising a package and a capacitor element inside the package, the capacitor element comprising a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer,
- wherein the capacitor element contains an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., and a substance having a reduction potential that is equal to or higher than a hydrogen-generating potential, and
- wherein said substance discharges no gases by reduction.
A solid electrolytic capacitor comprising a package and a capacitor element inside the package, the capacitor element comprising a valve action metal, an oxide film layer formed on the surface of the valve action metal, and a solid electrolytic layer formed on the oxide film layer,
- wherein the capacitor element contains an organic compound having a boiling point of not lower than 150° C. and a melting point of not higher than 150° C., and
- wherein the organic compound is a nitro group containing compound having a reduction potential that is equal to or higher than a hydrogen-generating potential.
Dependencies are inferred from the claim text.