PROCESS OF PREPARING A SOLID ELECTROLYTIC CAPACITOR CONTAINING A CONDUCTIVE POLYMER COUNTER ELECTRODE,申请号IL19990141208-传众专利搜索

PROCESS OF PREPARING A SOLID ELECTROLYTIC CAPACITOR CONTAINING A CONDUCTIVE POLYMER COUNTER ELECTRODE

申请公布号：IL141208(D0)

申请号：IL19990141208

申请日期：1999.08.31

申请公布日期：2002.02.10

申请人：

KEMET ELECTRONICS CORPORATION

分类号：H01G9/028;H01G9/00;H01G9/02;H01G9/025;H01G9/042;H01G9/052;(IPC1-7):H01G

主分类号：H01G9/028

摘要：The present invention relates to a method for making a solid electrolytic capacitor having a low equivalent series resistance by impregnating a porous capacitor pellet with conductive polymer. An oxidized pellet is dipped in a high concentration conductive polymer solution to deposit the polymer in doped (conductive) form. The solution also contains a crosslinking agent to prevent redissolution of the polymer when the pellet is re-dipped. After dipping, the solvent in the polymer solution is evaporated and a conductive film formed. In order to evaporate the solvent quickly, the solvent should have a boiling point of 80-220° C. and preferably a boiling point of 100-150° C. The conductive polymer film has a low resistivity (less than 1 ohm-cm, preferably less than 0.2 ohm-cm).