US Patent 9972445 Electrolytic capacitor and method of manufacturing the same
Patent 9972445 was granted and assigned to Nippon Chemi-con Corporation on May, 2018 by the United States Patent and Trademark Office.
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Provided are an electrolytic capacitor with high withstand voltage capable of preventing deterioration of withstand voltage characteristics caused by lead-free reflow or the like and improving ESR characteristics, and a manufacturing method thereof. The electrolytic capacitor is obtained by impregnating a capacitor element in which an anode electrode foil and a cathode electrode foil are wound with a separator interposed, with a dispersion containing: particles of a conductive polymer; sorbitol or sorbitol and polyalcohol; and a solvent so as to form a solid electrolyte layer containing 60 to 92 wt % of the sorbitol or the sorbitol and polyalcohol, and by filling an electrolytic solution containing ethylene glycol in a gap portion in the capacitor element on which the solid electrolyte layer is formed.
US Patent 09972445 Electrolytic capacitor and method of manufacturing the same US Patent 9972445 Electrolytic capacitor and method of manufacturing the same
US Patent 09972445 Electrolytic capacitor and method of manufacturing the same
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