Electrolytic capacitor and method for producing same
US-12136525-B2 · Nov 5, 2024 · US
Solid electrolytic capacitor and manufacturing method thereof
US2016336117A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016336117-A1 |
| Application number | US-201615217798-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 22, 2016 |
| Priority date | Feb 5, 2014 |
| Publication date | Nov 17, 2016 |
| Grant date | — |
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Abstract
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The present invention provides solid electrolytic capacitor with excellent properties in high-voltage application of 80V or more and a manufacturing method thereof. The solid electrolytic capacitor is manufactured by: forming, in a capacitor element with an anode electrode foil and a cathode electrode foil wound with an interposed separator, a solid electrolyte layer by using a conductive polymer dispersion in which particles of a conductive polymer dispersed in a solvent; and filling voids inside the capacitor element in which the solid electrolyte layer has been formed with an electrolytic solution containing less than 9 wt % of a salt of a composite compound of inorganic acid and organic acid as a solute for filling.
First claim
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1 . A solid electrolytic capacitor, comprising: a capacitor element with an anode electrode foil and a cathode electrode foil wound with an interposed separator, a solid electrolyte layer formed in the capacitor element by using a conductive polymer dispersion in which particles of a conductive polymer dispersed in a solvent; and voids inside the capacitor element in which the solid electrolyte layer has been formed filled with an electrolytic solution containing less than 9 wt % of a salt of a composite compound of inorganic acid and organic acid as a solute. 2 . The solid electrolytic capacitor according to claim 1 , wherein ethylene glycol and/or polyoxyethylene glycol is used as a solvent of the electrolytic solution. 3 . The solid electrolytic capacitor according to claim 1 , wherein the salt of the composite compound is ammonium salt. 4 . The solid electrolytic capacitor according to claim 1 , wherein the composite compound of inorganic acid and organic acid is borodisalicylic acid, borodiglycollic acid, or borodioxalic acid. 5 . The solid electrolytic capacitor according to claim 1 , wherein the solid electrolytic capacitor is used for high-voltage application of 80V or more. 6 . A method for manufacturing a solid electrolytic capacitor, comprising: forming a solid electrolyte layer by impregnating a capacitor element with a conductive polymer dispersion in which particles of a conductive polymer dispersed in a solvent, the capacitor element is wound with an anode electrode foil and a cathode electrode foil with an interposed separator; and impregnating voids inside the capacitor element in which the solid electrolyte layer has been formed with an electrolytic solution containing less than 9 wt % of a salt of a composite compound of inorganic acid and organic acid as a solute. 7 . The solid electrolytic capacitor according to claim 1 , wherein ethylene glycol and/or polyoxyethylene glycol is used as a solvent of the electrolytic solution, wherein the salt of the composite compound is ammonium salt. 8 . The solid electrolytic capacitor according to claim 1 , wherein ethylene glycol and/or polyoxyethylene glycol is used as a solvent of the electrolytic solution, wherein the composite compound of inorganic acid and organic acid is borodisalicylic acid, borodiglycollic acid, or borodioxalic acid. 9 . The solid electrolytic capacitor according to claim 1 , wherein ethylene glycol and/or polyoxyethylene glycol is used as a solvent of the electrolytic solution, wherein the solid electrolytic capacitor is used for high-voltage application of 80V or more.
Assignees
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Classifications
Inorganic semiconducting electrolytes, e.g. MnO2 · CPC title
- H01G9/028Primary
Organic semiconducting electrolytes, e.g. TCNQ · CPC title
- H01G9/15Primary
Solid electrolytic capacitors (H01G11/00 takes precedence) · CPC title
Etched foil electrodes · CPC title
Formation of the solid electrolyte layer · CPC title
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- What does patent US2016336117A1 cover?
- The present invention provides solid electrolytic capacitor with excellent properties in high-voltage application of 80V or more and a manufacturing method thereof. The solid electrolytic capacitor is manufactured by: forming, in a capacitor element with an anode electrode foil and a cathode electrode foil wound with an interposed separator, a solid electrolyte layer by using a conductive polym…
- Who is the assignee on this patent?
- Nippon Chemicon
- What technology area does this patent fall under?
- Primary CPC classification H01G9/028. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 17 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).