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High voltage electrolyte for hybrid super tantalum capacitor and preparation method thereof

A tantalum capacitor and hybrid technology, applied in the field of high-voltage electrolytes for hybrid super tantalum capacitors and their preparation

Active Publication Date: 2016-07-27
GUIZHOU AVIC JODO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the above-mentioned defects in the prior art, aiming at the problems existing in the electrolytic solution for high-performance hybrid super tantalum capacitors in China, and to provide a hybrid super tantalum electrolytic capacitor suitable for manufacturing high voltage and large capacity. Catholyte and preparation method thereof

Method used

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  • High voltage electrolyte for hybrid super tantalum capacitor and preparation method thereof
  • High voltage electrolyte for hybrid super tantalum capacitor and preparation method thereof
  • High voltage electrolyte for hybrid super tantalum capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 1. Preparation of impregnated electrolyte

[0060] a) Weigh 5g of ethylene glycol-methyl ether and 5g of ethylene glycol-butyl ether and mix evenly, then add 10g of N,N-dimethylformamide and 5g of dimethyl sulfoxide, mix and stir at room temperature, and slowly heat up to 80°C;

[0061] b), then weigh 4.2g of 1-propyl-3-n-butylimidazolium tetrafluoroborate, add it at 80°C, raise the temperature to 110°C, stir and keep it warm for 1h, and then cool to room temperature to obtain Mix liquid A;

[0062] c) Weigh VOSO 4 ·5H 2 O0.8g, it is dissolved in 44g deionized water, then measures the concentrated sulfuric acid 26g, in the process of constantly stirring, it is slowly added dropwise to VOSO 4 ·5H 2 In the O aqueous solution, the pH value is controlled at about 2.5 to prepare mixed B liquid;

[0063] d) Add the mixed liquid A into the mixed liquid B while stirring continuously, and the electrolyte solution for impregnation can be obtained after stirring evenly.

[...

Embodiment 2

[0071] 1. Preparation of impregnated electrolyte

[0072] a) Weigh 2.5g of polyethylene glycol and 2.5g of ethylene glycol-butyl ether and mix evenly, then add 12.5g of N,N-dimethylformamide and 37.5g of N-methylpyrrolidone, mix and stir at room temperature, and Slowly heat up to 80°C;

[0073] b) Then weigh 1 g of 1-n-butyl-3-methylimidazolium tetrafluoroborate, add it at 80°C, raise the temperature to 110°C, stir and keep it warm for 1h, and then cool to room temperature to obtain a mixed A liquid;

[0074] c) Weigh CuSO 4 ·5H 2 0.5g, it is dissolved in 23.5g deionized water, then measures 20g of concentrated sulfuric acid, in the process of constant stirring, it is slowly added dropwise to CuSO 4 ·5H 2 In the O aqueous solution, the pH value is controlled at about 2.0 to prepare mixed B liquid;

[0075] d) Add the mixed liquid A into the mixed liquid B while stirring continuously, and the electrolyte solution for impregnation can be obtained after stirring evenly.

...

Embodiment 3

[0083] 1. Preparation of impregnated electrolyte

[0084] a) Weigh 10g of ethylene glycol and 10g of ethylene glycol-butyl ether and mix evenly, then add 10g of dimethyl sulfoxide, mix and stir at room temperature, and slowly heat up to 80°C;

[0085] b) Then weigh 1g of 1-propyl-3-ethylimidazolium tetrafluoroborate, add it at 80°C, raise the temperature to 110°C, stir and keep it warm for 1h, and then cool to room temperature to prepare Mixture A liquid;

[0086] c) Weigh VOSO 4 ·5H 2 O1.5g, dissolve it in 35.5g deionized water, then measure 32g of concentrated sulfuric acid, slowly add it dropwise to VOSO in the process of constant stirring 4 ·5H 2 In the O aqueous solution, the pH value is controlled at about 2.0 to prepare mixed B liquid;

[0087] d) Add the mixed liquid A into the mixed liquid B while stirring continuously, and the electrolyte solution for impregnation can be obtained after stirring evenly.

[0088] 2. Preparation of gel electrolyte

[0089] a) Wei...

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Abstract

The invention provides a high-voltage electrolyte for a hybrid super tantalum capacitor and a preparation method of the high-voltage electrolyte. The high-voltage electrolyte comprises, by mass, a polar organic macromolecular substance, a proton inert solvent, imidazolium salt, sulfate of transition metal, concentrated sulfuric acid and deionized water. According to the high-voltage electrolyte, the surface morphology of a ruthenium oxide electrode is effectively improved, the internal resistance of the electrode is reduced, and the adhesion strength of ruthenium oxide is enhanced; finally, the original capacity of the capacitor is increased, and the ESR is lowered.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a high-voltage electrolyte for a hybrid super tantalum capacitor and a preparation method thereof. Background technique [0002] With the development and application of high-tech products, portable chemical power supply, as an important way to provide electrical energy, has always been the focus of research in various countries. Currently commonly used chemical power sources include primary batteries, secondary batteries, and fuel cells. However, in the past two decades, a new type of chemical power source: supercapacitors has attracted widespread attention. [0003] Supercapacitors, also known as electrochemical capacitors, are energy storage components that have the advantages of high specific energy, high specific power, fast charge and discharge capabilities, and long cycle life. It has broad application prospects in mobile communication information technology, electric veh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/64H01G11/86
CPCY02E60/13
Inventor 陆胜王杰
Owner GUIZHOU AVIC JODO TECH
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