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High temperature resistant electrolyte, preparation method thereof, and non-solid electrolyte tantalum capacitor

A tantalum capacitor and electrolyte technology, applied in the field of electrolyte, can solve problems such as easy gasification of working electrolyte and easy cracking of the shell, so as to prevent cracking of the shell, improve mechanical strength, and improve high temperature resistance

Active Publication Date: 2018-12-25
ZHUZHOU RIWANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to solve the problem that the working electrolyte is easy to vaporize, creatively add boric acid as a high temperature resistant additive to the working electrolyte, and provide a high temperature resistant electrolyte for non-solid electrolyte tantalum capacitors
[0006] The present invention also provides a non-solid electrolyte tantalum capacitor provided with the high-temperature-resistant electrolyte, which is used to solve the problems in the prior art that the shell of the non-solid electrolyte tantalum capacitor is easy to crack and the working electrolyte is easy to vaporize in a high-temperature environment

Method used

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  • High temperature resistant electrolyte, preparation method thereof, and non-solid electrolyte tantalum capacitor
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  • High temperature resistant electrolyte, preparation method thereof, and non-solid electrolyte tantalum capacitor

Examples

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Embodiment 1

[0030] This embodiment provides a method for preparing a high temperature resistant electrolyte, comprising the following steps:

[0031] S1. Preparation of base liquid: Mix 38 parts of 98% concentrated sulfuric acid and 62 parts of deionized water, specifically 20ml of 98% concentrated sulfuric acid and 60ml of deionized water, then add 1g of boric acid, stir at room temperature to obtain the base liquid;

[0032] S2. Preparation of working solution: mix 150ml of silica sol, 2g of CuSO and 10% chloroplatinic acid of 1.5ml successively according to weight percentage, then add 98% concentrated sulfuric acid of 50ml and stir at normal temperature, finally add 1g of boric acid to obtain working solution liquid.

[0033] Among them, the model of silica sol is 0101, and the performance indicators are as follows: pH value is 9~9.7, resistivity of silica sol P30℃≥200Ω.cm, density is 1.2g / cm3, appearance is milky white, translucent, latex-like liquid, No mechanical impurities and fl...

Embodiment 2

[0035] This embodiment is basically the same as Embodiment 1, except that 2 g of boric acid is added in step S1.

Embodiment 3

[0037] This example is basically the same as Example 1, except that 3 g of boric acid is added in step S1.

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Abstract

The invention relates to the technical field of an electrolyte, and discloses application of boric acid and a high-temperature resistant electrolyte and a non-solid electrolyte tantalum capacitor of the boric acid. The boric acid is creatively used as a high-temperature resistant additive and is added into a basic liquid (sulfuric acid) and a working liquid (silica sol-sulfuric acid), and the high-temperature resistant performance of the working electrolyte is greatly improved; and from the electrical property, the loss tangent and the leakage current of the working electrolyte are obviously superior to those of other basic liquids and electrolyte products, and the standard requirements are all met after a 16V voltage is applied and 24-hour lifetime test is performed under a high temperature of 220 DEG C. On the basis of an existing structure of the non-solid electrolyte tantalum capacitor, two I-shaped cushions are improved to an I-shaped cushion, a fluorine rubber layer is arranged at a position, nearest to the working electrolyte, of the I-shaped cushion, the flexibility of the product is improved, so that shell crack is fundamentally prevented when the product works in an environment of 200-220 DEGC for a long time.

Description

technical field [0001] The invention relates to the technical field of electrolytes, more specifically, to a high-temperature-resistant electrolyte, a preparation method thereof, and a non-solid electrolyte tantalum capacitor. Background technique [0002] As an important branch of electrolytic capacitors, tantalum electrolytic capacitors are widely used in communications, military communications, submarine cables, advanced electronic devices, and civilian appliances. At present, the working environment of domestic non-solid electrolyte tantalum capacitors is mainly suitable for working in low temperature environments. , The highest foreign non-solid electrolyte tantalum capacitors is also around 220 °C. [0003] The working electrolyte is the real cathode of the non-solid electrolyte tantalum capacitor. It is often used together with the base liquid and the working liquid. The base liquid is the solution impregnated before the assembly of the pellets, and the working liquid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/035H01G9/08H01G9/145
CPCH01G9/035H01G9/08H01G9/145
Inventor 袁艳丰刘建清
Owner ZHUZHOU RIWANG ELECTRONICS TECH
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