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A kind of preparation method of barium titanate/graphene composite nanomaterial

A graphene composite and nano-material technology, applied in the direction of graphene, titanate, nano-carbon, etc., can solve problems such as no related reports, and achieve the effect of simple process, high purity and easy control

Active Publication Date: 2016-01-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on composite capacitor materials of barium titanate and graphene is still in the exploratory stage, and there are no relevant reports at home and abroad.

Method used

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  • A kind of preparation method of barium titanate/graphene composite nanomaterial
  • A kind of preparation method of barium titanate/graphene composite nanomaterial
  • A kind of preparation method of barium titanate/graphene composite nanomaterial

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Experimental program
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Effect test

Embodiment 1

[0017] 1) Dissolve 0.25mmol tetrabutyl titanate in 5ml ethylene glycol methyl ether, drop in ammonia water with a mass concentration of 30% as a precipitant to precipitate titanium ions, and obtain titanium oxyhydroxide precipitation;

[0018] 2) Add the titanium oxyhydroxide precipitation obtained in step 1), 10ml of graphene oxide aqueous solution with a concentration of 0.5g / L and 20ml of ethylenediamine / ethanolamine mixture into the inner tank of the reactor, wherein ethylenediamine and The volume ratio of ethanolamine is 1:1, stirring at room temperature for 6h;

[0019] 3) Dissolve 0.25mmol of barium acetate in 2ml of deionized water, and add it into the liner of the reaction kettle containing the mixed solution in step 2), then add 2.74g of potassium hydroxide, and stir at room temperature for 30min;

[0020] 4) Put the inner liner of the reaction kettle equipped with the reaction materials into the reaction kettle, seal it tightly, and o After 12 hours of heat preserv...

Embodiment 2

[0022] 1) Dissolve 0.3mmol tetrabutyl titanate in 5ml ethylene glycol methyl ether, drop in 30% ammonia water as a precipitant to precipitate titanium ions, and obtain titanium oxyhydroxide precipitation;

[0023] 2) Add the titanium oxyhydroxide precipitation obtained in step 1), 10ml of a 1g / L graphene oxide aqueous solution and 20ml of ethylenediamine / ethanolamine mixture into the inner tank of the reactor, wherein ethylenediamine and ethanolamine The volume ratio is 1:1, stirred at room temperature for 8h;

[0024] 3) Dissolve 0.3mmol of barium acetate in 2ml of deionized water, add it to the liner of the reaction kettle containing the mixed solution in step 2), then add 5.48g of potassium hydroxide, and stir at room temperature for 60min;

[0025] 4) Put the inner liner of the reaction kettle equipped with the reaction materials into the reaction kettle, seal it tightly, and o After 12 hours of heat preservation at C, the temperature was naturally lowered to room tempera...

Embodiment 3

[0028] 1) Dissolve 0.5mmol tetrabutyl titanate in 5ml ethylene glycol methyl ether, drop in ammonia water with a mass concentration of 30% as a precipitant to precipitate titanium ions, and obtain titanium oxyhydroxide precipitation;

[0029] 2) Add the titanium oxyhydroxide precipitation obtained in step 1), 10ml of a 2g / L graphene oxide aqueous solution and 20ml of ethylenediamine / ethanolamine mixture into the inner tank of the reactor, wherein ethylenediamine and ethanolamine The volume ratio is 1:1, stirred at room temperature for 10h;

[0030] 3) Dissolve 0.5mmol of barium acetate in 2ml of deionized water, add it to the liner of the reaction kettle containing the mixed solution in step 2), then add 10.96g of potassium hydroxide, and stir at room temperature for 60min;

[0031] 4) Put the inner liner of the reaction kettle equipped with the reaction materials into the reaction kettle, seal it tightly, and o After 12 hours of heat preservation at C, the temperature was na...

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Abstract

The invention relates to a preparation method for a barium titanate / graphene composite nanometer material, and the method employs a wet chemical reaction process. The preparation steps comprise: taking 2-methoxyethanol as a solvent dissolving a titanium ion, utilizing ammonia water as a precipitating agent to precipitate titanium ion, adding an aqueous solution of graphene oxide, and fully mixing; utilizing a deionized water solution of barium acetate as a barium source, and taking a mixed solution of ethylenediamine and ethanolamine as a solvent; and finally utilizing a mineralization agent potassium hydroxide to promote crystallization, and performing hydro-thermal reaction to obtain the barium titanate / graphene nanometer powder. The preparation method is simple in process, easy to control, free of pollution and low in cost, and the prepared barium titanate / graphene composite nanometer material is high in purity and good in crystallinity.

Description

technical field [0001] The invention relates to a preparation method of a barium titanate / graphene composite nanometer material, belonging to the field of inorganic non-metallic materials. Background technique [0002] Barium titanate is a ferroelectric material with a typical perovskite structure. It has a wide range of applications in the fields of thermal variable resistors, nonlinear electronic components, dielectric amplifiers, multilayer ceramic capacitors (MLCC) and non-volatile ferroelectric memories. application space. Graphene is a carbon atom through sp 2 A two-dimensional carbon material with a thickness of one atom, which is composed of hybrids, is 100 times stronger than steel and has superconductivity, making it an ideal supercapacitor material. At present, the research on the composite capacitor material of barium titanate and graphene is still in the exploratory stage, and there are no relevant reports at home and abroad. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04C01G23/00B82Y30/00
CPCB82Y30/00C01B32/184C01G23/006C01P2002/72C01P2004/03C01P2004/04C01P2004/64
Inventor 韩高荣姜姗任召辉赵若愚魏晓沈鸽
Owner ZHEJIANG UNIV
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