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High-conductivity boron series-free working electrolyte and preparation method thereof

A high-conductivity, electrolyte technology, applied in the field of electrochemistry, can solve the problems of short service life and low conductivity, and achieve the effects of reliable quality, high conductivity and stable performance

Active Publication Date: 2014-03-12
江西联晟电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the working electrolyte for medium and high voltage aluminum electrolytic capacitors in the prior art still has the disadvantages of low conductivity and short service life. The conductivity of the working electrolyte for high-voltage aluminum electrolytic capacitors appears to be low

Method used

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  • High-conductivity boron series-free working electrolyte and preparation method thereof
  • High-conductivity boron series-free working electrolyte and preparation method thereof

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preparation example Construction

[0041] In the preparation method of high conductivity boron-free working electrolyte of the present invention, comprise the following steps:

[0042] S1. Weighing: Weigh solvents, repair agents, conductivity regulators, passivators, flash fire voltage boosters and hydrogen removers. The weighed weight components are consistent with the weight components in the electrolyte solution of the present invention.

[0043]S2. Dissolving for the first time: Add the solvent and repairing agent into the container, stir and heat to 50°C, stop heating, and stir until completely dissolved.

[0044] S3. Dissolving for the second time: drop the conductivity regulator into the fully dissolved solution in S2, and stir for 20-40 minutes at a stirring speed higher than that of S2. For example, the stirring speed in S2 is 120 rpm, and the stirring speed in S3 is 150 rpm.

[0045] S4. Dissolving for the third time: add the flash voltage booster, passivator and hydrogen remover in sequence to S3, ...

Embodiment 1

[0056] Weigh by parts by weight: 50 parts of ethylene glycol, 20 parts of adipic acid, 20 parts of ethylenediamine, 0.6 parts of ammonium hypophosphite, 7.4 parts of diethylene glycol ether, 2 parts of p-nitrobenzyl alcohol to prepare high conductivity High rate boron-free working electrolyte.

[0057] Prepare high-conductivity boron-free working electrolyte with the above-mentioned weighed raw materials:

[0058] (1) Dissolving for the first time: Add ethylene glycol and adipic acid into the container, stir and heat to 50°C, stop heating, and stir until completely dissolved.

[0059] (2), the second dissolution: drop ethylenediamine into the fully dissolved solution in (1), and stir for 20 minutes at a stirring speed higher than (1).

[0060] (3) Dissolving for the third time: Add diethylene glycol ether, ammonium hypophosphite and p-nitrobenzyl alcohol in sequence to (2), stir, raise the temperature to 110°C, and keep the temperature at 110°C for 50 minutes.

[0061] (4) C...

Embodiment 2

[0063] Weigh in parts by weight: 80 parts of ethylene glycol, 5 parts of suberic acid, 5 parts of triethylamine, 0.1 part of ammonium hypophosphite, 9.7 parts of polyethylene glycol ether, 0.2 part of p-nitrobenzyl alcohol, and prepare high Conductivity boron-free working electrolyte.

[0064] Prepare high-conductivity boron-free working electrolyte with the above-mentioned weighed raw materials:

[0065] (1) Dissolving for the first time: Add ethylene glycol and suberic acid into the container, stir and heat to 50°C, stop heating, and stir until completely dissolved.

[0066] (2) Dissolving for the second time: drop triethylamine into the fully dissolved solution in (1), and stir for 40 minutes at a stirring speed higher than (1).

[0067] (3) Dissolving for the third time: add polyethylene glycol ether, ammonium hypophosphite and p-nitrobenzyl alcohol in sequence to (2), stir, raise the temperature to 110°C, and keep the temperature at 110°C for 50 minutes.

[0068] (4) Co...

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Abstract

The invention discloses a high-conductivity boron series-free working electrolyte and a preparation method thereof. The electrolyte comprises, by weight, 50% to 80% of a solvent, 2% to 20% of a healant, 2% to 20% of a conductivity conditioning agent, 0.1% to 1% of a passivator, 1% to 10% of a spark voltage improving agent, and 0.2% to 2% of a hydrogen elimination agent. The preparation method comprises the following steps: S1, carrying out weighing; S2, adding the solvent and the healant into a container, carrying out stirring and heating to raise the temperature to 50 DEG C, stopping heating, and carrying out stirring until full dissolving; S3, dripping the conductivity conditioning agent into the solution obtained by the step S2 and stirring 20 to 40 mins; S4, adding the spark voltage improving agent, the passivator, and the hydrogen elimination agent into the solution obtained by the step S3 successively, stirring, and raising the temperature to 110 DEG C, and carrying out 110-DEG C constant temperature processing for 50 to 70 mins; and S5, carrying out cooling on the solution obtained by the step S4 to the room temperature and obtaining an electrolyte. The beneficial effects are as follows: the electrolyte does not contain boric acid or borate; the conductivity of the electrolyte is high; and the service life is long.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, and more specifically relates to a high-conductivity boron-free working electrolyte for medium and high-voltage aluminum electrolytic capacitors and a preparation method thereof. Background technique [0002] Medium and high voltage aluminum electrolytic capacitors are widely used in general electronic circuits, and their main uses are energy storage, filtering, coupling, oscillation, phase shifting, step-down, integration, memory, etc. As the actual negative electrode of the electrolytic capacitor, the working electrolyte of the medium and high voltage electrolytic capacitor occupies an extremely important position in the electrolytic capacitor product. It affects whether the product can work normally for a long time, and has the function of optimizing the electrical performance of the capacitor. [0003] The traditional working electrolyte for medium and high voltage aluminum electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
Inventor 程学鹏
Owner 江西联晟电子股份有限公司
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