Capacitor

A capacitor and electrode technology, applied in the field of capacitors, can solve the problem of difficulty in uniformly forming a conductive polymer layer and the like

Inactive Publication Date: 2014-11-12
CHENGDU JINGRONG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in chemical polymerization and electrolytic polymerization, it is difficult to form a conductive polymer layer uniformly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 5,000 grams of potassium fluoroniobate fully vacuum-dried at 80°C and sodium whose molar mass is 10 times that of potassium fluoroniobate into a nickel crucible, and make it undergo a reduction reaction at 1,000°C for 20 hours under an argon atmosphere . After the reaction was complete, the reduced product was cooled, washed successively with water, 95% sulfuric acid, and then water, dried in vacuum and pulverized for 40 hours using an alumina jar ball mill containing silica alumina balls. The pulverized product was immersed and stirred in a 3:2 (by mass) mixed solution of 50% nitric acid and 10% aqueous hydrogen peroxide solution. Then, the pulverized product was sufficiently washed with water until the pH value reached 7 to remove impurities, and then vacuum-dried. The average particle size of the raw niobium powder was 1.2 microns.

[0021] In a niobium tank, 500 g of this raw niobium powder was placed and 50 g of polybutylmethacrylate and 1 liter of toluene we...

Embodiment 2

[0026] Embodiment 2: the preparation of formula I compound crystal

[0027] Add 0.4mol 4-bromotoluene and 14.4g benzoyl peroxide to a reaction flask equipped with mechanical stirring and reflux condenser, heat to reflux under stirring, then add 0.4mol 2-bromo-2,5-pyrrole diketone (NBS) was added to the reaction flask in batches within 20 minutes, heated to reflux for 2 hours, and the reaction yield was 65% (GC). The reaction solution was neutralized with sodium carbonate, concentrated, dissolved with industrial absolute ethanol (1g:1mL) under reflux, cooled to -15°C for recrystallization, the purity was about 90% (GC). Its purity was >99% after multiple recrystallizations.

[0028] Under the protection of nitrogen, add 0.05mol triphenylamine and 100mL DMF to the reaction flask equipped with mechanical stirring and reflux condenser, cool to 5°C in an ice bath, slowly add 0.1mol phosphorus oxychloride dropwise under stirring, after the dropwise addition is completed , remove t...

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Abstract

The invention provides a capacitor. The capacitor comprises a compound crystal shown in the formula I and is provided with an X-ray powder diffraction diagram with 2 theta located at the positions about 5.87, 8.10, 9.72, 10.20, 11.35, 12.78, 14.39, 16.84, 17.57, 18.44, 19.22, 21.39, 22.82, 23.73, 24.78, 25.23, 26.65, 27.43, 28.82, 29.12, 30.42, 31.21, 32.95, 33.89, 36.08, 38.72 and 39.86.

Description

technical field [0001] The invention relates to a capacitor which has the excellent characteristics of low equivalent series resistance and low initial defective rate of leakage current. Background technique [0002] With the increase in frequency of electronic equipment, capacitors that are one of electronic components require large-capacity capacitors that are excellent in impedance characteristics in high-frequency regions. Recently, in order to reduce the impedance in this high-frequency region, electrolytic capacitors using conductive polymers with high electrical conductivity have been studied and commercialized. An electrolytic capacitor includes an anode foil, a dielectric coating formed on the surface of the anode foil, and a conductive polymer layer formed on the dielectric coating. The surface of the anode foil is roughened and formed with a plurality of pores. As a method of forming a conductive polymer layer, in addition to chemical polymerization and electrol...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/052
Inventor 宋刚
Owner CHENGDU JINGRONG ELECTRONICS
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