High-specific capacitance electrode foil electrolyte, composition thereof and preparation method of electrode foil

A technology of electrode foil and electrolyte, which is applied in the direction of electrolytic capacitors, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of unable to meet market demand and large capacity loss, reduce leakage, increase specific volume and life, and can highly operable effect

Inactive Publication Date: 2020-03-31
XINJIANG JOINWORLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the aluminum oxide film made of boric acid system

Method used

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  • High-specific capacitance electrode foil electrolyte, composition thereof and preparation method of electrode foil
  • High-specific capacitance electrode foil electrolyte, composition thereof and preparation method of electrode foil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1:

[0021] The preparation method of electrode foil includes the following steps:

[0022] Step one, cut the aluminum foil into a width of 6.5*6.5m 2 Sample of aluminum foil;

[0023] Step 2: Boil the aluminum foil sample in high-temperature water for 10-15 minutes to obtain the intermediate sample;

[0024] Step 3: Place the intermediate sample in the electrolyte (the concentration of each component in the electrolyte is as follows: the concentration of boric acid is 20g / L, the concentration of tartaric acid is 0.5g / L, the concentration of ammonium pentaborate is 1g / L, and the concentration of ammonium dihydrogen phosphate The concentration is 0.5g / L), and the current density is 80mA / cm 2 Under the action of the current, anodization, heat treatment, intermediate treatment, secondary anodization and post-treatment are carried out in sequence to obtain electrode foil. The performance indicators of the electrode foil are as follows: the final withstand voltage value is ...

Example Embodiment

[0025] Example 2:

[0026] The preparation method of electrode foil includes the following steps:

[0027] Step one, cut the aluminum foil into a width of 6.5*6.5m 2 Sample of aluminum foil;

[0028] Step 2: Boil the aluminum foil sample in high-temperature water for 10-15 minutes to obtain the intermediate sample;

[0029] Step three, place the intermediate sample in the electrolyte (the concentration of each component in the electrolyte is as follows: the concentration of boric acid is 20g / L, the concentration of tartaric acid is 0.5g / L, the concentration of ammonium pentaborate is 5g / L, and the concentration of ammonium dihydrogen phosphate The concentration is 0.5g / L), and the current density is 80mA / cm 2 Under the action of the current, anodization, heat treatment, intermediate treatment, secondary anodization and post-treatment are carried out in sequence to obtain electrode foil. The performance indicators of the electrode foil are as follows: the final withstand voltage value...

Example Embodiment

[0030] Example 3:

[0031] The preparation method of electrode foil includes the following steps:

[0032] Step one, cut the aluminum foil into a width of 6.5*6.5m 2 Sample of aluminum foil;

[0033] Step two, boil in high-temperature water for 10-15 minutes to obtain an intermediate sample;

[0034] Step 3: Place the intermediate sample in the electrolyte (the concentration of each component in the electrolyte is as follows: the concentration of boric acid is 20g / L, the concentration of tartaric acid is 2.5g / L, the concentration of ammonium pentaborate is 1g / L, and the concentration of ammonium dihydrogen phosphate The concentration is 0.5g / L), and the current density is 80mA / cm 2 Under the action of the current, anodization, heat treatment, intermediate treatment, secondary anodization and post-treatment are carried out in sequence to obtain electrode foil. The performance indicators of the electrode foil are as follows: the final withstand voltage value is 541-542V, and the capaci...

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Abstract

The invention provides a high-specific capacitance electrode foil electrolyte, a composition of the high-specific capacitance electrode foil electrolyte and a preparation method of electrode foil andrelates to the technical field of anode aluminum foil production for aluminum electrolytic capacitors. For the current situation that the capacity of the electrode foil is low and the market demand cannot be met, the high-specific capacitance electrode foil electrolyte is provided. According to the mainly adopted technical scheme, the combination of the high-specific capacitance electrode foil electrolyte is composed of the electrolyte and water, wherein the electrolyte is composed of boric acid, tartaric acid, ammonium pentaborate and ammonium dihydrogen phosphate.

Description

technical field [0001] The invention belongs to the technical field of anode aluminum foil production for aluminum electrolytic capacitors, and in particular relates to a high specific volume electrode foil electrolyte, a composition thereof, and a preparation method of the electrode foil. Background technique [0002] With the rapid development of artificial intelligence, electrode foil is the key raw material for aluminum electrolytic capacitor products in the electronic component industry. Applied to the application field of frequency conversion technology, the green energy field represented by wind power generation, solar power generation and charging piles, electrode foil manufacturing technology, high-performance electrolyte technology and chip technology are the three core technologies for the manufacture of aluminum electrolytic capacitors. The new challenges of miniaturization, chip type and high performance of aluminum electrolytic capacitors must strengthen the re...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/12C25D11/18H01G9/055
CPCC25D11/08C25D11/12C25D11/18H01G9/055
Inventor 林颖黄予涵李宏亮游彭飞王兰东汪鑫杨文峰
Owner XINJIANG JOINWORLD CO LTD
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