Electrolyte solution for driving electrolytic capacitor and electrolytic capacitor
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United States of America Patent
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N/A
Issued Date -
Dec 9, 2004
app pub date -
Mar 25, 2004
filing date -
Sep 26, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electrolyte solution for driving an electrolytic capacitor having a solvent composed of 20 to 80 wt % of an organic solvent and 80 to 20 wt % of water, characterized in that it comprises one or more nitro compounds or nitroso compounds exclusive of nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitroacetophenone and nitroanisole; an electrolytic capacitor comprising the electrolyte solution for driving an electrolytic capacitor; and an electrolytic capacitor comprising one or more nitro compounds or nitroso compounds located at another portion than an electrolyte solution therein. The electrolyte solution preferably contains a carboxylic acid or a salt thereof or an inorganic acid or a salt thereof as an electrolyte. The electrolytic capacitor exhibits a low impedance, excellent low temperature stability and good life characteristics, and further, is excellent in the effect to absorb a hydrogen gas, even when use is made of an electrolyte solution employing mixed solvent having a great water content and when an electrolytic capacitor is used under a high temperature condition.
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