Surface treatment solution for manufacturing solid electrolytic capacitor

Abstract

The invention provides surface treatment solution for manufacturing a solid electrolytic capacitor, which at least comprises a coupling agent for connecting an anode body surface oxide film medium with a solid electrolyte in the solid electrolytic capacitor, wherein the surface treatment solution also comprises a surfactant for reducing the surface tension of solution of the coupling agent, and improving the effect of the solution of the coupling agent for wetting the anode body surface oxide film medium to ensure that the coupling agent is more uniformly covered on the surface of the anode body surface oxide film medium, so the bonding between the anode body surface oxide film medium and the solid electrolyte is more uniform, and the bonding area and the bonding strength are improved.

Description

【Technical field】 [0001] The invention relates to a solid electrolytic capacitor, in particular to a surface treatment solution for making a solid electrolytic capacitor. 【Background technique】 [0002] With the continuous development of science and technology, the market increasingly needs capacitors with small size, large capacity, low loss, low ESR, and high reliability. One of the ways to improve the performance of capacitors is to improve the conductivity, regularity, and stability of solid electrolytes. sex, flatness. In the production process, chemical oxidation or electrolytic oxidation polymerization is generally used to polymerize pyrrole, aniline, thiophene or its derivative monomers to form a solid electrolyte for electrolytic capacitors. Since the oxide film medium on the surface of the anode body and the solid electrolyte are two materials with different properties, it is difficult for the monomer of the solid electrolyte to attach to the surface of the oxide ...

AI Technical Summary

Problems solved by technology

[0004] When producing solid electrolytic capacitors in the prior art, chemical polymerization or chemical polymerization and electrochemical polymerization are directly used to prepare the conductive layer on the oxide film medium, so that the capacity of the capacitor produced in this way is often small, and the ESR is large, which cannot Meet high performance requirements

[0005] The Chinese invention application No. CN1832073 published on 2006.09.13 discloses a technical solution for manufacturing solid electrolytic capacitors by using coupling agent treatment. The capacity has been significantly improved, but the extraction rate is still not too high, and the capacity pass rate It is not very high in actual production, which is very unfavorable for large-scale industrial production