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A kind of interlayer manganese dioxide/polyaniline composite material and preparation method thereof

A manganese dioxide and composite material technology, applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., can solve the problems of too fast capacitance decay, easy particle agglomeration, low electronic conductivity, etc., to suppress the phenomenon of agglomeration, The effect of good conductivity

Active Publication Date: 2016-10-05
FUZHOU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there are many problems to be solved in MnO2: (1) MnO2 particles are easy to agglomerate, resulting in a much smaller actual capacity than the theoretical capacity; (2) Compared with the other two materials, MnO2 has a lower electronic conductivity, resulting in The internal resistance of the capacitor is too large, it is easy to heat up, and the capacitance decays too fast

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  • A kind of interlayer manganese dioxide/polyaniline composite material and preparation method thereof
  • A kind of interlayer manganese dioxide/polyaniline composite material and preparation method thereof
  • A kind of interlayer manganese dioxide/polyaniline composite material and preparation method thereof

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preparation example Construction

[0020] A kind of preparation method of interlayer manganese dioxide / polyaniline composite material, concrete steps are:

[0021] (1) Measure aniline (purified by 2 distillations), dissolve it in 100mL organic solvent, and prepare an organic solution of corresponding concentration;

[0022] (2) Weigh the solid potassium permanganate, dissolve it in 100mL deionized water, adjust the pH with sulfuric acid, and prepare an aqueous solution of corresponding concentration;

[0023] (3) Place the above-prepared solution under low temperature conditions (0-5°C) for pretreatment for 30-50 minutes, then slowly introduce potassium permanganate solution into the aniline organic solution to form a stable organic-inorganic solution, Placed at 0-4°C, react for 12-48h;

[0024] (4) Suction filter, wash and dry the above solution to obtain the final product.

Embodiment 1

[0026] (1) Take 1mL of aniline monomer and dissolve it in 100mL of carbon tetrachloride organic solvent to obtain aniline organic solution;

[0027] (2) Weigh 0.1 mg of potassium permanganate solid, dissolve it in 100 mL of deionized water to obtain a 0.001 mg / mL potassium permanganate aqueous solution, and adjust the pH value to 3 with concentrated sulfuric acid;

[0028] (3) Pretreat the above solution at 0-5°C for 30 minutes, then introduce potassium permanganate aqueous solution onto the surface of the aniline organic solution to form an organic-inorganic solution; then place it at 0°C and react for 24 hours;

[0029] (4) Suction filter, wash, and dry the solution obtained above to obtain the final product, which is a sandwich-like manganese dioxide / polyaniline composite material.

Embodiment 2

[0031] (1) Take 2mL of aniline monomer and dissolve it in 100mL of carbon tetrachloride organic solvent to obtain aniline organic solution;

[0032] (2) Weigh 1 mg of potassium permanganate solid, dissolve it in 100 mL of deionized water to obtain 0.01 mg / mL potassium permanganate aqueous solution, and adjust the pH value to 3 with concentrated sulfuric acid;

[0033] (3) Pretreat the above solutions at 0-5°C for 40 minutes, then introduce an aqueous solution of potassium permanganate into the surface of the aniline organic solution to form an organic-inorganic solution; then place at 4°C and react for 48 hours;

[0034] (4) Suction filter, wash, and dry the solution obtained above to obtain the final product, which is a sandwich-like manganese dioxide / polyaniline composite material.

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Abstract

The invention relates to a sandwich-like manganese dioxide / polyaniline composite material and a preparation method thereof, belonging to the field of new energy materials. Dissolving aniline in an organic solvent to obtain an aniline organic solution, dissolving potassium permanganate in deionized water to obtain a potassium permanganate aqueous solution, controlling the pH value of the potassium permanganate aqueous solution, and performing low-temperature pretreatment on the two solutions respectively; An aqueous solution of potassium permanganate is introduced onto the surface of an aniline organic solution to form a two-phase interface, and the reaction is carried out at 0-4°C for 12-48 hours; the product is filtered, washed and dried to obtain a sandwich-like manganese dioxide / polyaniline composite material. Under acidic conditions, oxidatively polymerized polyaniline has high electrical conductivity. At the same time, polyaniline is located between manganese dioxide sheets, which effectively prevents its agglomeration and greatly exerts its high specific capacitance and other properties. It is used in supercapacitors. The application of electrode materials has laid the foundation.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a sandwich-like manganese dioxide / polyaniline composite material and a preparation method thereof. Background technique [0002] As a new type of energy storage element, supercapacitor has many advantages such as high charge and discharge efficiency, long cycle life, green and pollution-free, and has broad application prospects in mobile communications, electric vehicles, aerospace and other fields. Since it was proposed, it has attracted the attention of the world. Supercapacitors are divided into electric double layer capacitors and Faraday pseudocapacitors according to the energy storage mechanism. The main electrode materials are carbon materials, transition metals and their oxides, conductive polymers, and composite materials. [0003] Manganese dioxide is an ideal material for supercapacitor electrodes due to its high theoretical specific capacitance and ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/48H01G11/86
CPCH01G11/48H01G11/86Y02E60/13
Inventor 郑玉婴刘先斌
Owner FUZHOU UNIV