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Solid electrolyte and capacitor thereof

A solid electrolyte and electrolyte technology, which is applied in the direction of solid electrolytic capacitors, electrolytic capacitor manufacturing, and capacitor parts, etc., can solve the problems of large equivalent series resistance, poor safety, and short life, and achieve the effect of excellent conductivity

Active Publication Date: 2016-07-13
SHENZHEN POLYCAP ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electrolytic capacitors initially used liquid electrolytes, which had a short life, high equivalent series resistance, and poor safety. Later, a variety of solid electrolytes were developed, including manganese dioxide, TCNQ, conductive polymers, etc. The types of conductive polymers have successively Polyaniline, polypyrrole and its derivatives, polythiophene and its derivatives, etc.

Method used

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Experimental program
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Effect test

Embodiment 1

[0030] Dissolve 57 grams of ferric p-toluenesulfonate (DBF) and 9.5 grams of PEG30-b-PSS13 in 300 milliliters of ethanol, heat up to 60°C and stir to dissolve completely, then cool to room temperature; 180 milliliters of 8 grams per liter of graphene The dispersion liquid was gradually added dropwise to the above solution while stirring, and after the dropwise addition was completed, it was ultrasonically treated with a power of 300W for 5 hours to fully disperse;

[0031] After dissolving 71 grams of EDOT in 300 milliliters of ethanol, it was added into the above-mentioned mixed solution, and stirred to form a uniform mixed solution.

[0032] The capacitor core is dipped in the above mixture, heated to 60°C and kept for 4 hours, then heated to 150°C to evaporate the solvent, and then encapsulated and aged.

Embodiment 2

[0034] Dissolve 57 grams of ferric p-toluenesulfonate (DBF) and 9.5 grams of PEG30-b-PSS13 in 300 milliliters of ethanol, raise the temperature to 60°C and stir to dissolve completely, then cool to room temperature; The dispersion liquid was gradually added dropwise to the above solution while stirring, and after the dropwise addition was completed, it was ultrasonically treated with a power of 300W for 5 hours to fully disperse;

[0035] After dissolving 71 grams of EDOT in 300 milliliters of ethanol, it was added into the above-mentioned mixed solution, and stirred to form a uniform mixed solution.

[0036] The capacitor core is dipped in the above mixture, heated to 60°C and kept for 4 hours, then heated to 150°C to evaporate the solvent, and then encapsulated and aged.

Embodiment 3

[0038] 1) Dissolve EDOT in n-butanol to obtain solution 1;

[0039] 2) Add ferric p-toluene sulfonate and block copolymer polyethylene glycol-polystyrene sulfonate into butanol, heat to 70°C and stir to fully dissolve, then cool to room temperature to obtain solution 2, in which The ratio of the sulfonic acid functional group in iron p-toluenesulfonate and block copolymer polyethylene glycol-polystyrene sodium sulfonate is 2:1;

[0040] 3) Slowly add the graphene dispersion into Solution 2 dropwise, while stirring. After the dropwise addition is completed, ultrasonically treat with 250W power to fully disperse to obtain Solution 3. The amount of graphene is 25g / mole iron p-toluenesulfonate;

[0041] 4) Add solution 1 into solution 3, stir to mix evenly to form solution 4, wherein the ratio of 3,4-ethylenedioxythiophene to iron p-toluenesulfonate is 3:2;

[0042] 5) Heat the solution 4 to 100°C and keep it for 150 minutes to allow the polymerization reaction to occur, and then...

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Abstract

A solid electrolyte and a capacitor thereof are provided in order to improve the conductivity and service life of the current capacitor. The invention provides an electrolyte which is prepared with 3,4-ethoxylene dioxy thiophene, graphene, Iron(III) p-toluene sulfonate hexahydrate, and block copolymer polyethylene glycol-Poly(sodium-p-styrenesulfonate). In addition, the invention provides a capacitor prepared with the electrolyte. The solid electrolyte and the capacitor have the beneficial effect that the conductive composite material used as the solid electrolyte has excellent electrical conductivity, the precursor dispersion liquid thereof can easily go into the holes of a pole piece isolation layer and a formed foil of an electrolytic capacitor, the material is suitable for being used as the electrolyte for capacitors, and the capacitor made from the electrolyte has low equivalent series resistance and long life.

Description

technical field [0001] The invention relates to a solid electrolyte and a capacitor prepared by using the electrolyte. Background technique [0002] Capacitors are one of the most common electronic components and are widely used in various electronic products. Capacitors currently on the market mainly include aluminum electrolytic capacitors, film capacitors, tantalum capacitors, ceramic capacitors, monolithic capacitors, paper capacitors, mica capacitors, ceramic capacitors, etc. Among them, aluminum electrolytic capacitors are the most widely used, and their output accounts for about About 40% of all electronic components. [0003] Electrolytic capacitors initially used liquid electrolytes, which had a short service life, large equivalent series resistance, and poor safety. Later, a variety of solid electrolytes were developed, including manganese dioxide, TCNQ, conductive polymers, etc. The types of conductive polymers have successively Polyaniline, polypyrrole and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/025H01G9/15
CPCH01G9/0036H01G9/025H01G9/15
Inventor 付铜权
Owner SHENZHEN POLYCAP ELECTRONICS TECH
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