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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

AI Technical Summary

Problems solved by technology

However, the aluminum oxide film made of boric acid system cannot meet the market demand due to large capacity loss.

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

Embodiment 1

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

[0022] Step 1, cut the aluminum foil into a width of 6.5*6.5m 2 aluminum foil samples;

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

[0024] Step 3, the intermediate sample is placed in the electrolyte (the concentration of each component in the electrolyte is as follows: boric acid concentration is 20g / L, tartaric acid concentration is 0.5g / L, ammonium pentaborate concentration is 1g / L, ammonium dihydrogen phosphate Concentration is 0.5g / L), at a current density of 80mA / cm 2 Under the action of a high current, anodic oxidation, heat treatment, intermediate treatment, secondary anodic oxidation and post-treatment are carried out in sequence, and finally the electrode foil is obtained. The performance indicators of the electrode foil are as follows: the final withstand voltage is 541-543V, and the capacity is 0.740-...

Embodiment 2

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

[0027] Step 1, cut the aluminum foil into a width of 6.5*6.5m 2 aluminum foil samples;

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

[0029] Step 3, the intermediate sample is placed in the electrolyte (the concentration of each component in the electrolyte is as follows: boric acid concentration is 20g / L, tartaric acid concentration is 0.5g / L, ammonium pentaborate concentration is 5g / L, ammonium dihydrogen phosphate Concentration is 0.5g / L), at a current density of 80mA / cm 2 Under the action of a high current, anodic oxidation, heat treatment, intermediate treatment, secondary anodic oxidation and post-treatment are carried out in sequence, and finally the electrode foil is obtained. The performance indicators of the electrode foil are as follows: the final withstand voltage is 540-542V, and the capacity is 0.741-...

Embodiment 3

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

[0032] Step 1, cut the aluminum foil into a width of 6.5*6.5m 2 aluminum foil samples;

[0033] Step 2: Boil in high temperature water for 10-15 minutes to obtain intermediate samples;

[0034] Step 3, the intermediate sample is placed in the electrolyte (the concentration of each component in the electrolyte is as follows: boric acid concentration is 20g / L, tartaric acid concentration is 2.5g / L, ammonium pentaborate concentration is 1g / L, ammonium dihydrogen phosphate Concentration is 0.5g / L), at a current density of 80mA / cm 2 Under the action of a high current, anodic oxidation, heat treatment, intermediate treatment, secondary anodic oxidation and post-treatment are carried out in sequence, and finally the electrode foil is obtained. The performance indicators of the electrode foil are as follows: the final withstand voltage is 541-542V, and the capacity is 0.772-0.773μF / cm 2 , The mechanic...

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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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