METHOD OF RE-ANODIZING SOLID ELECTROLYTIC CAPACITORS HAVING MNO2 AND SOLID ELECTROLYTE LAYERS

摘要

A METHOD OF MANUFACTURING SOLID ELECTROLYTIC CAPACITORS OF THE PRESENT INVENTION COMPRISES:FORMIN AN ANODIZED FILM ON A SURFACE OF AN ANODE MADE OF A VALVE METAL; FORMING A CAPACITOR ELEMENT BY ADHERING AN INSULATING RESIST TAPE FOR SEPARATING NEGATIVE ELECTRODE PART AND POSITIVE ELECTRODE PART ON SAID ANODIZED FILM; FORMING A MNO₂ LAYER BY IMMERSING SAID CAPACITOR ELEMENT IN A SOLUTION CONTAINING MANGANESE SALTS, REMOVING THE CAPACITOR ELEMENT FROM THE SOLITION, AND THERMALLY DECOMPOSING ATTACHED MANAGANESE SALTS; IMMERSING THE CAPACITOR ELEMENT ON WHICH THE MNO₂ LAYER IS FORMED IN AN ORGANIC POLAR SOLVENT OR ITS SOLUTION; RE-ANODIZING THE CAPACITOR ELEMENT BY IMMERSING THE CAPACITOR ELEMENT IN THE ELECTROLYTIC SOLUTION BEFORE THE ORGANIC POLAR SOLVENT OR ITS SOLUTION DRIES; AND FORMING A SOLID ELECTROLYTE LAYER AND CATHODE CONDUCTOR LAYER ON THE BASE LAYER. THE MANUFACTURING METHOD OF THE PRESENT INVENTION THUS OFFERS SOLID ELECTROLYTIC CAPACITORS WHICH DEMONSTRATE LESS CHANGE IN LEAK CURRENT WHEN THEY ARE KEPT AT HIGH TEMPERATURE AND HIGH HUMIDITY, AND GOOD IMPEDANCE CHARACTERISTICS AT HIGH FREQUENCIES.