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Capacitor cathode material and preparation method and application thereof

A cathode material and capacitor technology, which is applied in the field of capacitors, can solve the problems of low breakdown voltage and large leakage current of capacitors, and achieve the effects of improving large leakage current, saving costs, and improving low breakdown voltage

Active Publication Date: 2021-09-03
CHINA ZHENHUA GRP XINYUN ELECTRONICS COMP ANDDEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a capacitor cathode material, its preparation method and application, which can effectively improve the problems of large leakage current and low breakdown voltage of the capacitor, and the capacitor cathode The preparation process of the material is simple

Method used

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  • Capacitor cathode material and preparation method and application thereof
  • Capacitor cathode material and preparation method and application thereof

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preparation example Construction

[0036] In the second aspect, the embodiment of the present application provides a method for preparing a capacitor cathode material as provided in the embodiment of the first aspect, including: sequentially forming a surfactant layer, a first conductive polymer layer, a glycerin layer, and a second Two conductive polymer layers.

[0037] It can be understood that, in the embodiments of the present application, the formation methods of the surfactant layer, the first conductive polymer layer, the glycerin layer and the second conductive polymer layer are not limited, for example, by dipping or spin coating etc. formed.

[0038] Considering that the impregnation method is simple to operate and easy to obtain a uniform layer structure, optionally, the layer structures of the surfactant layer, the first conductive polymer layer, the glycerin layer and the second conductive polymer layer of the present application are all in the The corresponding solution is formed by immersion. ...

Embodiment 1

[0058] A method for preparing a capacitor cathode material, comprising:

[0059] S1. Forming a surfactant layer

[0060] Mix 1000g of deionized water and 500g of absolute ethanol evenly, then add 63g of silane coupling agent and stir magnetically for 10min, then pour it into the dipping tank, put it into the aluminum foil to be pretreated, dip for 5min, air dry for 15min, and then put it in the oven for 120 ℃ drying 60min.

[0061] S2. Forming the first conductive polymer layer

[0062] (1) Mix 2500g of absolute ethanol and 80g of 3-methoxythiophene evenly, then magnetically stir for 10min, prepare a monomer solution, then pour it into the dipping tank, put it into the pretreated aluminum foil, dip for 3min, and then Put it into a constant temperature and humidity box with a temperature of 30° C. and a humidity of 60% RH for 10 minutes.

[0063] (2) Mix 2500g of deionized water, 1000g of sodium persulfate and 5g of sodium alkylbenzene sulfonate evenly, then stir for 60 minu...

Embodiment 2

[0071] A method for preparing a capacitor cathode material, comprising:

[0072] S1. Forming a surfactant layer

[0073] Mix 1000g of deionized water and 500g of absolute ethanol evenly, then add 63g of silane coupling agent and stir magnetically for 10min, then pour it into the dipping tank, put it into the aluminum foil to be pretreated, dip for 5min, air dry for 15min, and then put it in the oven for 120 ℃ drying 60min.

[0074] S2. Forming the first conductive polymer layer

[0075] (1) Mix 2500g of absolute ethanol and 80g of 3-methoxythiophene evenly, then magnetically stir for 10min, prepare a monomer solution, then pour it into the dipping tank, put it into the pretreated aluminum foil, dip for 3min, and then Put it into a constant temperature and humidity box with a temperature of 30° C. and a humidity of 60% RH for 10 minutes.

[0076] (2) Mix 2500g of deionized water, 1000g of sodium persulfate and 5g of sodium alkylbenzene sulfonate evenly, then stir for 60 minu...

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Abstract

The invention provides a capacitor cathode material and a preparation method and application thereof, and belongs to the technical field of capacitors. The capacitor cathode material comprises a surfactant layer, a first conductive polymer layer, a glycerin layer and a second conductive polymer layer which are sequentially attached to the surface of an electrode foil; and the material of the glycerin layer comprises one or more of glycerin and a glycerin polymer. According to the invention, the problems of large leakage current and low breakdown voltage of the capacitor can be effectively improved, and the preparation process of the cathode material of the capacitor is simple.

Description

technical field [0001] The present application relates to the technical field of capacitors, in particular, to a capacitor cathode material, its preparation method and application. Background technique [0002] The existing low-voltage (UR≤10V) conductive polymer solid chip aluminum electrolytic capacitor products usually only use electrolysis or chemical polymerization to form a layer of conductive polymer during preparation, and the product has a large leakage current and a low breakdown voltage. lead to a low pass rate. The existing medium voltage (10V<UR≤35V) conductive polymer solid chip aluminum electrolytic capacitor products, in order to improve the above problems of low voltage products, in the preparation process, a layer of conductive polymer is formed by electrolysis or chemical polymerization process. After processing, it is usually necessary to use dispersion liquid and other treatment liquids to repeatedly form more than ten layers of conductive polymer la...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/045H01G9/14H01G9/15
CPCH01G9/0425H01G9/045H01G9/14H01G9/15
Inventor 靳博陈绪鑫蒋松成陈琛李如升李贡玉王艳秦钟华
Owner CHINA ZHENHUA GRP XINYUN ELECTRONICS COMP ANDDEV CO LTD
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