Conductive high-molecular polymer electrolytic capacitor and preparation method thereof

Abstract

The invention discloses a conductive high-molecular polymer electrolytic capacitor, which comprises an anode foil, a cathode foil and an electrolyte. The electrolyte is an electrolyte containing a conductive high-molecular polymer. The preparation method comprises the following steps: cutting the foil and the isolating membrane; fixing an outgoing line; winding the foil and the isolating membraneto form an element; carrying out formation treatment on the element; cleaning and drying the element; immersing the element into an electrolyte; conducting assembling; performing sleeving and engraving marks. According to the method, the element is immersed into the electrolyte through circular vacuumizing and pressurized impregnation, and negative pressure and positive pressure are periodically loaded to the element, so that the electrolyte is fully impregnated into the electrolyte to improve the performance. Meanwhile, the cathode used by the electrolytic capacitor is the electrolyte in which the conductive high-molecular polymer and the electrolyte work in a mixed manner, so that the manufactured electrolytic capacitor can resist the working voltage of 500V and has the characteristics of low impedance, resistance to higher ripple current, long service life and excellent low-temperature characteristic, namely frequency characteristic.

Description

technical field [0001] The invention relates to a conductive polymer electrolytic capacitor and a preparation method thereof. Background technique [0002] Conductive polymer solid capacitors have excellent high-frequency and low-resistance characteristics, and are widely used in various fields. With the reduction of costs, there is a tendency to gradually replace the original liquid electrolytic capacitors. However, under its superior impedance characteristics and life characteristics, conductive polymer solid capacitors also have obvious disadvantages compared with traditional liquid electrolytic capacitors. Mainly due to the characteristics of low capacity lead-out rate, large leakage current, no self-repair function, and low voltage withstand capability. [0003] Although traditional aluminum electrolytic capacitors have high withstand voltage capability, they have large impedance, small ripple current resistance, poor low-temperature characteristics, and poor frequency...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a conductive polymer electrolytic capacitor and its preparation method, which solves the problems of large impedance, low temperature characteristics and poor frequency characteristics of aluminum capacitors in the prior art

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