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Application of polybasic carboxylic acid to electrolyte

A technology of electrolyte and application, which is applied in the field of electrolyte of aluminum electrolytic capacitors, and can solve problems such as poor low temperature resistance, low solubility, and low flashover voltage

Inactive Publication Date: 2018-05-01
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they have the problems of low solubility in the solvent, low conductivity of the prepared electrolyte, low flashover voltage, poor low temperature resistance and short service life, which cannot meet the needs of the modern high-end capacitor industry, such as medium and high voltage aluminum electrolysis. Capacitor needs

Method used

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  • Application of polybasic carboxylic acid to electrolyte
  • Application of polybasic carboxylic acid to electrolyte
  • Application of polybasic carboxylic acid to electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] a) Dissolve the compound shown in formula (II) in ethylene glycol, feed ammonia gas into the solution to fully react to obtain the corresponding 9-methyl-7-ene-1,6,14-tetradecanetricarboxylic acid Ammonium salt;

[0060] b) Dissolve the ammonium salt of 9-methyl-7-ene-1,6,14-tetradecanetricarboxylate obtained above in ethylene glycol, and adjust the concentration of the solution to 10-30%, and the configuration can be obtained The electrolyte of Example 1.

Embodiment 2

[0062] a) dissolving the compound shown in formula (III) in ethylene glycol, and feeding ammonia into the solution to fully react to obtain the corresponding 9,13-dimethyl-7,11-diene-1,6,10, 18-octadecanetetracarboxylic acid ammonium salt;

[0063] b) Dissolve the ammonium salt of 9,13-dimethyl-7,11-diene-1,6,10,18-octadecanetetracarboxylate obtained above in ethylene glycol, and adjust the concentration of the solution to 10- 30%, the electrolyte solution of the configured embodiment 2 can be obtained.

Embodiment 3

[0065] a) dissolving the compound shown in formula (IV) in ethylene glycol, and feeding ammonia into the solution to fully react to obtain the corresponding 9,13,17-trimethyl-7,11,15-triene-1, 6,10,14,22-Docosanepentacarboxylic acid ammonium salt;

[0066] b) dissolving the ammonium salt of 9,13,17-trimethyl-7,11,15-triene-1,6,10,14,22-docosanepentacarboxylate obtained above in ethylene glycol, Adjust the concentration of the solution to 10-30%, and then the configured electrolyte solution of Example 3 can be obtained.

[0067] Embodiments and comparative examples are all the same except that the solute ammonium salt is different. Compare the comparative examples with the moisture content, electrical conductivity (30°C), pH value, flashover voltage (room temperature) and conductivity change value after a constant temperature of 105°C in the above three examples. Since the moisture content affects other parameters Larger, so adjust the moisture content to 1%. The specific va...

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Abstract

The invention discloses application of polybasic carboxylic acid to an electrolyte, belonging to the technical field of electrolytes. The general structural formula of the polybasic carboxylic acid isas shown in a formula (I) which is described in the specification. The polybasic carboxylic acid has great solubility in a solvent; and middle-and-high-voltage aluminum electrolytic capacitors composed of the electrolyte prepared from the polybasic carboxylic acid have the characteristics of long service life, high electric conductivity and good high-temperature performance.

Description

technical field [0001] The invention relates to the technical field of electrolytes for aluminum electrolytic capacitors, in particular to a polycarboxylic acid used for electrolytes of medium and high-voltage aluminum electrolytic capacitors and its application. Background technique [0002] Aluminum electrolytic capacitors are essential components in the terminals of various electronic products, and play a vital role in applications such as industry and power supply. In recent years, with the rapid development of small-volume, high-stable performance technologies in new technology fields such as high-voltage inverters, electric vehicles, wind power, and photovoltaic power generation, manufacturers have proposed high-voltage, large-ripple current, and high-voltage capacitors for capacitors. Long life requirements. The working electrolyte of the capacitor is called the "blood" of the capacitor. It not only serves as the actual cathode of the capacitor, but also has the func...

Claims

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Application Information

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IPC IPC(8): C07C51/02C07C57/02H01G9/035
CPCC07C51/02C07C51/09C07C67/00H01G9/035C07C57/02C07C69/604
Inventor 余意何凤荣
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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