Solid tantalum electrolytic capacitor and manufacturing method thereof

• Main Authors: JIANG YADONG, CUI LIQIANG, YU JUNSHENG, XING GUOXIU
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2010
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

The invention discloses a solid tantalum electrolytic capacitor comprising a tantalum anode body, an Ra2O5 dielectric envelope, a conducting layer, a graphite layer and a silver coating, wherein the Ra2O5 dielectric envelope is positioned on the surface of the tantalum anode body, the conducting layer is positioned on the Ra2O5 dielectric envelope, and the graphite layer and the silver coating are coated on the conducting layer. The solid tantalum electrolytic capacitor is characterized in that the conducting layer is a mixed system of composite carbon nano tubes and high-polymer conducting materials, the length directions of the composite carbon nano tubes are perpendicular to the surface of the tantalum anode body, the composite carbon nano tubes are carbon nano tubes with the surfaces uniformly attached with nano particles in a shell-core structure, and the nano particles in the shell-core structure are nano particles using magnetic nano particles as cores, wherein the surfaces of the nano particles are co