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Formed foil post-processing method, electrode foil and capacitor

A technology of electrode foil and forming foil, which is applied in the field of capacitors, can solve the problems of many manufacturing processes of capacitors, affecting the qualification rate of capacitors, affecting the performance of capacitors, etc., and achieve the effect of maintaining excellent characteristics, compact structure, and simplifying the production process

Inactive Publication Date: 2015-03-11
SHENZHEN CAPCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the process route that using the existing formed foil, the capacitor preparation process is more complicated; moreover, there are many polymerization reactions between the EDOT monomer (ie 3,4-ethylenedioxythiophene) and the oxidizing agent. The uncertainty of the capacitor affects the performance of the capacitor, and even affects the qualification rate of the capacitor

Method used

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  • Formed foil post-processing method, electrode foil and capacitor
  • Formed foil post-processing method, electrode foil and capacitor
  • Formed foil post-processing method, electrode foil and capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The electrolyte glue in this example is added in the following order in order: conductive polymer 50g, water-based resin 35g, wax emulsion 10g, surfactant 1g, leveling agent 1g, defoamer 1g, film forming agent 1g, adhesion promoter Add 1g of silane coupling agent, 1g of silane coupling agent, 6g of isopropanol, and 6g of pure water. Stir evenly while adding, and then coat the electrolyte glue on the surface of the metal oxide layer of the formed foil with a coating thickness of 50 μm and bake at 150°C for 5 minutes. , to obtain the electrode foil.

[0035] Then the electrode foil is assembled into a solid aluminum electrolytic capacitor according to the procedures: foil opening, riveting, winding, impregnation, and sealing. Among them, the impregnation is the step of impregnating the electrolyte in the traditional liquid capacitor. In this example, it is introduced into the preparation of solid aluminum electrolytic capacitors, which has a certain repair effect on the e...

Embodiment 2

[0038] The process and measurement methods of this example are exactly the same as those of Example 1, except that the electrolyte glue, coating thickness and baking conditions are changed, and the rest are exactly the same.

[0039] The electrolyte glue in this example is added in the following quantities: 70g of conductive polymer, 30g of water-based resin, 2g of wax emulsion, 2g of surfactant, 2g of leveling agent, 2g of defoamer, 2g of film forming agent, and 2g of adhesion promoter , silane coupling agent 2g, ethylene glycol 5g, isopropanol 5g. In this example, the coating thickness is 60 μm, and the electrode foil is obtained by baking at 120° C. for 15 minutes.

[0040] The test results of this example are also shown in Table 1.

Embodiment 3

[0042] The process and measurement methods of this example are exactly the same as those of Example 1, except that the electrolyte glue, coating thickness and baking conditions are changed, and the rest are exactly the same.

[0043] The electrolyte glue in this example was added in the following quantities: 95g of conductive polymer, 25g of water-based resin, 1g of surfactant, 1g of leveling agent, 2g of defoamer, and 2g of silane coupling agent. In this example, the coating thickness is 100 μm, and the electrode foil is obtained by baking at 150° C. for 15 minutes.

[0044] The test results of this example are also shown in Table 1.

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Abstract

The invention discloses a formed foil post-processing method, an electrode foil and a capacitor prepared from the electrode foil. The formed foil post-processing method comprise the step of coating an electrolyte glue solution on the surface of a metal oxidization layer of a formed foil to form an electrolyte layer, wherein the electrolyte glue solution includes a conductive polymer, a water-base resin and a silane coupling agent. When the electrode foil prepared by the method is used for preparing the capacitor, not only the production process of the capacitor can be simplified effectively, but the production efficiency is improved; compared with the prior art, the uncertainty brought by the polymerization of EDOT (ethylenedioxy thiophene) monomers and oxidizing agent and the influence on the quality of the capacitor can be avoided. According to the electrode foil, the electrolyte layer has a compact structure, is attached firmly and stably, has good conductivity and has a good contact with the metal oxidization layer; the excellent feature of a solid electrolytic capacitor is maintained and the high-frequency performance is improved.

Description

technical field [0001] The present application relates to the field of capacitors and electrode materials thereof, in particular to a post-treatment method of forming foil, the electrode foil prepared thereby, and a capacitor using the electrode foil. Background technique [0002] Electrolytic capacitors are one of the indispensable components in electronic products. With the development of electronic technology, the assembly density and integration degree of electronic complete machines have further increased. The key non-integrable discrete components in the operation of aluminum electrolytic capacitors are developing in the direction of small size, large capacity, low cost, high frequency and low impedance. Aluminum electrolytic capacitors have the characteristics of excellent performance, large capacity, low price, easy processing, and convenient use, so they are widely used in electronic complete products such as information electronic equipment, instruments, electromec...

Claims

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Application Information

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IPC IPC(8): H01G9/028H01G9/042H01G9/15
Inventor 赵大成曹勇飞
Owner SHENZHEN CAPCHEM TECH
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