Five-stage manufacturing method of low voltage electrode foil for aluminum electrolytic capacitor

A technology for aluminum electrolytic capacitors and manufacturing methods, which is applied in the direction of electrolytic capacitors, capacitors, circuits, etc., can solve the problems of poor storage performance of electrode foils and increase the life time of capacitors, and achieve the effects of high formation efficiency, small leakage, and long life at high temperature

Inactive Publication Date: 2009-12-02
NANTONG HAIYI ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor storage performance of electrode foil and increase the life t

Method used

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  • Five-stage manufacturing method of low voltage electrode foil for aluminum electrolytic capacitor

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Example Embodiment

[0007] Example 1:

[0008] Take the corroded low-voltage aluminum foil with a purity of 99.99%, and use a current density of 100mA / cm in a 4% ammonium adipate solution at 70°C. 2 15V into 10 minutes, and then in 4% ammonium adipate 70 ℃ aqueous solution at 100mA / cm 2 Current density, 26V into 10 minutes, and then three-stage formation, the three-stage formation conditions are the same stage formation, the formation voltage is 38V, the time is 10 minutes, and then the fourth and fifth-level formation, the chemical conversion solution is 3% hexamethylene Ammonium acid, temperature is 70℃, current density is 100mA / cm 2 , The voltage is 46V and 50V, respectively, the time is 10 minutes and 26 minutes, and then heat treatment at a high temperature of 300 ℃ for 2 minutes, followed by 3% NH 4 H 2 PO 4 Aqueous solution 70℃100mA / cm 2 After forming at 50V for 12 minutes (post forming 1), then treating in a 2% phosphoric acid solution at a temperature of 50°C, and finally performing post for...

Example Embodiment

[0009] Example 2:

[0010] Take the corroded low-voltage aluminum foil with a purity of 99.99%, and use a current density of 100mA / cm in a 10% ammonium adipate solution at 70°C. 2 15V into 10 minutes, and then 100mA / cm in 5% ammonium adipate 70℃ aqueous solution 2 Current density, 26V into 10 minutes, and then three-stage formation, the three-stage formation conditions are the same stage formation, the formation voltage is 38V, the time is 10 minutes, and then the fourth and fifth-level formation, the chemical conversion solution is 3% hexamethylene Ammonium acid, temperature is 70℃, current density is 100mA / cm 2 , The voltage is 46V and 50V, respectively, the time is 10 minutes and 26 minutes, and then heat treatment at a high temperature of 300 ℃ for 2 minutes, followed by 3% NH 4 H 2 PO 4 Aqueous solution 70℃100mA / cm 2 After forming at 50V for 12 minutes (post-forming 1), then treating in a 4% phosphoric acid solution at a temperature of 50°C, and finally performing post-formin...

Example Embodiment

[0011] Example 3:

[0012] Take the corroded low-pressure aluminum foil with a purity of 99.99%, and use a current density of 100mA / cm in an 8% ammonium adipate solution at 70°C. 2 15V into 10 minutes, and then in 4% ammonium adipate 70 ℃ aqueous solution at 100mA / cm 2 Current density, 26V into 10 minutes, and then three-stage formation, the three-stage formation conditions are the same stage formation, the formation voltage is 38V, the time is 10 minutes, and then the fourth and fifth-level formation, the chemical conversion solution is 3% hexamethylene Ammonium acid, temperature is 70℃, current density is 100mA / cm 2 , The voltage is 46V and 50V, respectively, the time is 10 minutes and 26 minutes, and then heat treatment at a high temperature of 300 ℃ for 2 minutes, followed by 3% NH 4 H 2 PO 4 Aqueous solution 70℃100mA / cm 2 After forming at 50V for 12 minutes (post-forming 1), then treating in a 4% phosphoric acid solution at a temperature of 50°C, and finally performing post-f...

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Abstract

Aiming to solve the problems of poor storage performance of the electrode foil and life time prolong of the capacitor, the invention provides a novel five-stage manufacturing method of low voltage electrode foil for an aluminum electrolytic capacitor, which comprises the processes of first forming, second forming, third forming, fourth forming, fifth forming, high-temperature processing, after-forming 1, after-processing, and after-forming 2. The produced low voltage electrode foil for the aluminum electrolytic capacitor has high forming effect of up to 220 percent to 260 percent, long high-temperature life, good storage performance and less electricity leakage.

Description

technical field [0001] The invention relates to a method for manufacturing an electrode foil for an aluminum electrolytic capacitor, more specifically a method for manufacturing an electrode foil for a low-voltage aluminum electrolytic capacitor. Background technique [0002] At present, the production of electrode foils for aluminum electrolytic capacitors in China adopts low-voltage formation methods, and low-voltage formation adopts three-stage or four-stage formation. The formation efficiency is low, the storage performance is poor, the leakage is large, and the high-temperature life test time of the capacitor is short. Contents of the invention [0003] The purpose of the present invention is to solve the problems of poor storage performance of electrode foil and increase the life time of capacitors, and provide a new five-stage manufacturing method of electrode foil for low-voltage aluminum electrolytic capacitors. [0004] The process of the manufacturing method of ...

Claims

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Application Information

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IPC IPC(8): H01G9/045H01G9/055C25F3/04
Inventor 严季新王建中张传超
Owner NANTONG HAIYI ELECTRONICS
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