Electrolyte for electrolytic capacitor and electrolytic capacitor using the same
AssigneeMitsubishi Chemical Corporation
InventorsMasayuki Takeda, Masahiro Takehara, Makoto Ue
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Abstract
An electrolyte for an electrolytic capacitor which is high in electrolytic conductivity, excellent in heat stability and high in withstand voltage. An electrolyte for an electrolytic capacitor comprising a tetrafluoroaluminate ion; and an electrolyte for an electrolytic capacitor containing a salt and a solvent, characterized in that electrolytic conductivity X (mS·cm−1) at 25° C. and withstand voltage Y (V) of a capacitor satisfy the relationships of formulae (I): Y≧−7.5X+150, and X≧4, Y>0.
Claims30
An electrolytic capacitor comprising an electrolyte comprising a tetrafluoroaluminate ion in the form of at least one quaternary onium salt selected from the group consisting of a quaternary ammonium salt, a quaternary phosphonium salt, a quaternary imidazolium salt and a quaternary amidinium salt.
An electrolyte for an electrolytic capacitor comprising a tetrafluoroaluminate ion, wherein the tetrafluoroaluminate ion is contained in the form of at least one salt selected from the group consisting of quaternary onium salts, amine salts, ammonium salts and alkali metal salts of tetrafluoroaluminate.
Dependencies are inferred from the claim text.