| abstract |
The present invention provides an electrolytic condenser with low impedance, high voltage tolerance of 100 V level, long high temperature lifetime, and excellent liquid leakage characteristic. The present invention utilizes an electrolyte including aluminum tetrafluoride salt together with phosphoric acid treated electrode foil as the anode or cathode electrode foil so as to provide an electrolytic condenser with low impedance, high voltage tolerance and long high temperature lifetime. Moreover, by using the aforementioned electrolyte and the foil showing the electrode potential in the electrolyte at least higher than the anode tab or the chemical treated anode electrode foil as the anode electrode foil, the excellent liquid leakage characteristic can be obtained in addition to the aforementioned characteristics. |