Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method for raising specific volume of electrode foil in use for aluminium electrolytic capacitor

A technology for aluminum electrolytic capacitors and manufacturing methods, applied in the direction of electrolytic capacitors, capacitor manufacturing, capacitors, etc., can solve the problem of low electrode foil capacity, achieve high product quality, reasonable technology, and increase the effect of specific capacitance

Inactive Publication Date: 2006-12-06
NANTONG HAIXING ELECTRONICS
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the pre-treatment method of medium-pressure chemical formation was hydration in pure water, and the capacity of the electrode foil made was low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Take the corroded aluminum foil for medium pressure with a purity of 99.99%, soak it in pure water above 95 degrees for 6 minutes, then soak it in 0.5% phosphoric acid solution of 60 degrees for 5 minutes, and then soak it in 1.2% ammonium adipate and 4% boric acid in an aqueous solution at 85°C, the applied current density is 50mA / cm 2 , 350V voltage for chemical formation, after constant voltage for 28 minutes, then heat treatment at 450°C for 4 minutes, and then in a 90°C aqueous solution of 1.2% ammonium adipate and 4% boric acid, apply a current density of 50mA / cm 2 , 350V voltage for formation, constant voltage 12 minutes after the end.

Embodiment 2

[0014] Take the corroded aluminum foil for medium pressure with a purity of 99.99%, immerse it in pure water above 95 degrees for 6 minutes, then soak it in 0.1% phosphoric acid solution at 40 degrees for 1 minute, then soak it in 0.5% ammonium adipate and 3% boric acid in an aqueous solution at 60°C, the applied current density is 50mA / cm 2 , 350V voltage for chemical formation, constant voltage for 20 minutes, then heat treatment at 350°C for 3 minutes, and then apply a current density of 50mA / cm in an aqueous solution of 0.5% ammonium adipate and 3% boric acid at 60°C 2 , 350V voltage for formation, constant voltage 10 minutes after the end.

Embodiment 3

[0016] Take the corroded aluminum foil for medium pressure with a purity of 99.99%, soak it in pure water above 95 degrees for 6 minutes, then soak it in 5% phosphoric acid solution of 90 degrees for 10 minutes, and then soak it in 3% ammonium adipate and 10% boric acid in an aqueous solution at 90°C, the applied current density is 50mA / cm 2 , 350V voltage for chemical formation, constant voltage for 30 minutes, then heat treatment at 500°C for 5 minutes, and then in a 90°C aqueous solution of 3% ammonium adipate and 10% boric acid, apply a current density of 50mA / cm 2 , 350V voltage for formation, constant voltage 15 minutes after the end.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The disclosed preparation method for increasing specific volume of electrode foil in use for aluminum electrolytic capacitor includes following steps: carrying out hydration for medium pressure corrosion aluminum foil in pure water at temperature 95 deg.C or higher; dipping hydrated aluminum foil in 0.1-5% solution of phosphoric acid at temperature 40-80 deg.C; then, carrying out two times of reduction in water solution containing 0.5-3% ammonium adipic acid, and 3-10% boric acid at temperature 60-90 deg.C; after first reduction, process at constant pressure for 20-30 minutes, and through treatment at high temperature at temperature 350-500 deg.C; after second reduction, process at constant pressure for 10-15 minutes. Useful effects are: reasonable technique, high quality of products, and raised 4-10% specific volume for electrode foil produced.

Description

Technical field: [0001] The invention relates to a production method of electronic components, in particular to a production method of an electrode foil for an aluminum electrolytic capacitor, specifically, a production method for increasing the specific capacity of an electrode foil for an aluminum electrolytic capacitor. Background technique: [0002] The manufacturing method of electrode foil for aluminum electrolytic capacitor is to form a layer of dense oxide film on the surface of aluminum foil by electrochemical method, which is used as the working medium of capacitor. In the past, the pre-treatment method of medium-pressure chemical formation was hydration in pure water, and the capacity of the electrode foil made was low. Invention content: [0003] The object of the present invention is to provide a manufacturing method for improving the specific volume of the electrode foil for aluminum electrolytic capacitors with reasonable process and high product quality, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01G9/00H01G9/055H01G13/00B21D33/00C25D11/00
Inventor 张台华张传超王建中
Owner NANTONG HAIXING ELECTRONICS
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com