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Aluminium electrolytic capacitor electrolyte and preparation method

A technology of aluminum electrolytic capacitors and electrolytes, which is applied in the field of electrolytes, can solve problems such as unfavorable performance of capacitors, and achieve the effects of superior high flashover voltage performance, high economic value, and improved stability

Inactive Publication Date: 2015-09-02
NANTONG HUAYU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional electrolyte preparation materials, if the flash voltage of the electrolyte is increased, its viscosity and resistivity will be increased, which is detrimental to the performance of the capacitor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method for realizing the electrolytic solution of the aluminum electrolytic capacitor comprises the following steps:

[0023] (1) Add ethylene glycol and diethylene glycol into the container, heat it up, and add ammonium pentaborate when the temperature rises to 55~65°C;

[0024] (2) After stirring evenly, heat up to 85~95°C and add ammonium sebacate, stir to dissolve and add high temperature stabilizer;

[0025] (3) After the high-temperature stabilizer dissolves, heat up to 135-140 degrees and keep warm for 25-30 minutes before cooling down;

[0026] (4) When the temperature drops to 115~120℃, add ammonium m-nitroacetamide and 17 ammonium sebacate, and when the temperature continues to drop to 55~65℃, add ammonium dodecanoate, and stir well;

[0027] (5) The temperature drops to 22~28°C for canning and packaging.

[0028] Electrolyte parameters after preparation: conductivity (30 degrees) = 3.5±0.8ms / cm, pH value 6.8±2; flash fire voltage: >490V. It...

Embodiment 2

[0030] On the basis of embodiment 1, the electrolytic solution of aluminum electrolytic capacitor is made of ethylene glycol, diethylene glycol, ammonium pentaborate, ammonium sebacate, high temperature stabilizer, m-nitroacetophenone, 17 ammonium sebacate and twelve bis Ammonium acid is mixed according to the mass ratio of 160:8:16:13:5:2:80:6.

[0031] The preparation method for realizing the electrolytic solution of the aluminum electrolytic capacitor comprises the following steps:

[0032] (1) Add ethylene glycol and diethylene glycol into the container, heat it up, and add ammonium pentaborate when the temperature rises to 60°C;

[0033] (2) After stirring evenly, heat up to 90°C and add ammonium sebacate, stir to dissolve and then add high-temperature stabilizer;

[0034] (3) After the high-temperature stabilizer dissolves, heat up to 137 degrees and keep warm for 28 minutes before cooling down;

[0035] (4) When the temperature drops to 118°C, add ammonium m-nitroacet...

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Abstract

The invention discloses an aluminium electrolytic capacitor electrolyte and a preparation method; the aluminium electrolytic capacitor electrolyte is mixed by glycol, diglycol, ammonium boron, sebacic acid ammonium, high temperature stabilizing agent, nitrophenol acetophenone, 17 sebacic acid ammonium and ammonium dodecanedioate according to mass ratio 155~165:6~10:14~18:11~15:4~6:1~3:75~85:5~7. A special polymer is used to serve as the high temperature stabilizing agent, thus improving stability of work electrolyte under high temperature environment. The electrolyte parameters are listed as below: conductivity (30degree)=3.5+ / -0.3ms / cm, PH value 6.8+ / -1, and scintillation voltage >510V. The aluminium electrolytic capacitor electrolyte is excellent in high temperature resistance and high scintillation voltage performance, can be widely applied to energy saving lamp and wind generating set fields, thus having very high economic values.

Description

technical field [0001] The invention relates to an electrolytic solution, in particular to an electrolytic solution for an aluminum electrolytic capacitor and a preparation method thereof. Background technique [0002] Electrolyte is a term with a wide range of meanings. It is used in different industries to represent different contents. There are electrolytes (also called electrolytes) in living organisms, electrolytes used in the battery industry, and electrolytes in electrolytic capacitors, supercapacitors and other industries. The composition of electrolytes used in different industries varies greatly, or even completely different. [0003] For example, the electrolyte of the human body is mainly composed of water, sodium chloride, and pH buffer substances. The electrolyte of aluminum electrolyte capacitors contains GBL and other main solvents. The electrolyte of supercapacitors contains propylene carbonate or acetonitrile as the main solvent. The liquid contains m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
Inventor 刘龙春何翠杨晨杨建华
Owner NANTONG HUAYU ELECTRONICS
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