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Forming technique for reducing voltage rising time of aluminum electrolytic capacitor anode foil

A technology of aluminum electrolytic capacitors and boosting time, which is applied in electrolytic capacitors, capacitors, capacitor manufacturing, etc., can solve the problems of reduced anode foil quality and inability to meet the performance requirements of anode foils, and achieve the effect of shortening the boosting time

Inactive Publication Date: 2007-07-04
XINJIANG JOINWORLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the boosting time is generally 160 seconds to 250 seconds. Generally, when the boosting time is higher than 250 seconds, the quality of the anode foil will be reduced, so that it cannot meet the performance requirements for the above-mentioned miniaturized and long-life anode foil.

Method used

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Embodiment Construction

[0011] The present invention is not limited by the following examples, and the specific implementation manner can be determined according to the above-mentioned technical solutions and actual conditions of the present invention.

[0012] Embodiments of the present invention are as follows: the present invention reduces the anode foil boosting time of aluminum electrolytic capacitor and forms process and carries out according to the following steps:

[0013] A. Treat the corroded foil with a voltage of 520V in 1% or 2% or 5% or 8% or 10% or 12% or 13% or 15% nitric acid solution at room temperature for 2 seconds or 3 seconds or 5 seconds or 8 seconds seconds or 12 seconds or 18 seconds or 26 seconds or 36 seconds or 46 seconds or 55 seconds or 60 seconds;

[0014] B. Boil in pure water at 95°C for 10 minutes;

[0015] C. Add 0.2g / L citric acid to the electrolytic solution of 60g / L boric acid and 0.6g / L ammonium pentaborate at a temperature of 85°C;

[0016] D. Immerse the cor...

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Abstract

The invention relates to a process for reducing bossting time for formation of aluminum electorlytic capacitance anode foil, comprising boiling with pure water, forming, depolarizing and reforming. There is a pretreatment before boiling with pure water: putting corrosive foil into nitrate liquid for 1-60 seconds at room temperature, the proportion by weight of nitrate liquid is 1% -15%. The invention keeps the initial range of the product CV of specific capacitance and withstand voltage, and reduces the bossting time for aluminum electorlytic capacitance anode foil, which can meet the specific requirement for raw material of anode foil, and it is suitable for high and low pressure aluminum electrolytic capacitance.

Description

technical field [0001] The invention relates to a production method of an anode foil for an aluminum electrolytic capacitor, which is a formation process for reducing the boosting time of the anode foil of the aluminum electrolytic capacitor, and is especially suitable for manufacturing the raw material anode foil of the aluminum electrolytic capacitor with the requirement of miniaturization and long service life. Background technique [0002] At present, the production method of anode foil for aluminum electrolytic capacitors generally includes pure water boiling, formation, depolarization and re-formation treatment. For example: the patent document with the publication number CN1484259A discloses a "manufacturing method of aluminum electrolytic capacitor electrode foil", which includes boiling pure water, chemical formation, depolarization and re-chemical formation treatment, wherein the chemical formation treatment is formed in the electrolytic solution carried out in, th...

Claims

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Application Information

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IPC IPC(8): C25D11/00H01G9/045H01G9/055H01G13/00
Inventor 董晓红
Owner XINJIANG JOINWORLD CO LTD
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