| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrolytic solution for aluminum electrolytic capacitors, which has a high sparking voltage, a high voltage increase rate, and no possibility of corroding capacitor members, while maintaining a specific conductivity at 30°C of 4 to 25 mS/cm; and an aluminum electrolytic capacitor using the electrolytic solution. Ž<P>SOLUTION: An electrolytic solution is characterized by containing an electrolyte (C) composed of an alkyl phosphoric acid ester anion (A) represented by at least one of general Formulas (1) and (2) and a cation (B), and an organic solvent (D), wherein the content of a phosphate (E) contained in the electrolytic solution and composed of a phosphate anion and a cation (F) [the cation (B) may be the same as or different from the cation (F)] is 0.03 to 2 wt.% on the basis of the total weight of the electrolyte (C), the organic solvent (D), and the phosphate (E). Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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