| 摘要 |
Provided is an aluminum electrolytic capacitor exhibiting low specific resistance and low impedance property and realizing high reliability. An electrolytic capacitor has a structure in which: a capacitor element (6) which is formed by rolling an anode foil (1) and a cathode foil (2) each connected with an electrode extraction lead (4, 5) through a separator (3) and which is impregnated with a drive electrolytic solution is included in a cylindrical outer case having a closed-end; and an open end of the outer case is sealed with an elastic sealing body, in which: the drive electrolytic solution contains a tricyanomethide salt represented by the below-indicated chemical formula (1); and the drive electrolytic solution has a water content of 3.0 wt% or less: (1) where, R represents a cation pairing with a tricyanomethide ion in formation of a tricyanomethide salt. |
