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Preparation method of nanometer tin indium oxide powder

An indium tin oxide powder, nanotechnology, applied in the directions of tin oxide, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of lack of availability, and achieve the effects of single phase structure, good dispersion, and easy process control.

Active Publication Date: 2014-11-19
安徽纳洛米特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology is simple to operate, but the relevant technology is not available in China, and it is a core technology that is kept secret from China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first step, electrochemical reaction:

[0032] In a self-made special electrolytic cell, 1.2 kg of metal indium-tin alloy is used as the anode, and the ratio of tin content is prepared according to In2O3 (90%) SnO2 (10%). The negative electrode material is made of glassy carbon, and the electrolyte is an environmentally friendly reagent. 10 liters of absolute alcohol with a purity of 99.99%, add 500 grams of tetraheptyl ammonium bromide as a conductive agent, pass a direct current between the positive and negative electrodes, after 24 hours, wash with high-purity water and alcohol, and centrifuge to obtain wet nano-indium oxide The precursor of tin powder is 5 kg.

[0033] The electrochemical reaction is as follows:

[0034] In-3e+R→R 3 -In; Sn-2e+2R→R 2 -Sn, wherein R is an organic alcohol.

[0035] The second step, heat treatment:

[0036] Put 5 kg of the precursor of nano-indium tin oxide powder obtained in the first step into an oven for drying at a tempera...

Embodiment 2

[0042] The first step, electrochemical reaction:

[0043] In a self-made special electrolytic cell, 5.5 kg of indium-tin alloy is used as the anode, and the ratio of tin content is prepared according to In2O3 (90%) SnO2 (10%). The negative electrode material is made of glassy carbon, and the electrolyte is an environmentally friendly reagent 99.999 % dehydrated alcohol 50 liters, add 2000 grams of tetraheptyl ammonium bromide as conductive agent, connect with direct current between positive and negative electrodes, through 48 hours, through centrifugation, washing obtains the precursor 25 of wet nano indium tin oxide powder Kilogram.

[0044] The electrochemical reaction is as follows:

[0045] In-3e+R→R 3 -In; Sn-2e+2R→R 2 -Sn, wherein R is an organic alcohol.

[0046] The second step, heat treatment:

[0047] Put 25 kg of the precursor of nano-indium tin oxide powder obtained in the first step into an oven to dry at a temperature of 100°C, and then heat it in a high-tem...

Embodiment 3

[0053] The first step, electrochemical reaction:

[0054] In the self-made special electrolytic cell, 20 kg of indium-tin alloy is used as the anode, the proportion of tin content is prepared according to In2O3 (90%) SnO2 (10%), the negative electrode material is made of glassy carbon, and the electrolyte is an environmentally friendly reagent industry Alcohol, 100 liters of absolute alcohol with a purity of 99.999%, add 4000 grams of tetraheptyl ammonium chloride as a conductive agent, pass a direct current between the positive and negative electrodes, and after 60 hours, the structure is centrifuged and washed to obtain wet nano-indium tin oxide Powder precursor 50 kg.

[0055] The electrochemical reaction is as follows:

[0056] In-3e+R→R 3 -In; Sn-2e+2R→R 2 -Sn, wherein R is an organic alcohol.

[0057] The second step, heat treatment:

[0058] Put 50 kg of the precursor of nano-indium tin oxide powder obtained in the first step into an oven to dry at a temperature of 1...

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Abstract

The invention discloses a preparation method of nanometer tin indium oxide powder. The preparation method comprises the following steps: in a self-made special electrolytic cell, indium-tin metal alloy is used as an anode, a conducting material is used as a cathode, the electrolyte is prepared by adding an ammonium salt which is soluble in organic alcohol to environment-friendly alcohol as the solvent, in the electrochemical reaction, the ammonium salt does not participate in the chemical reaction, the anode namely the indium-tin alloy is electrolyzed and combined with the organic alcohol to generate a nanometer tin indium oxide precursor; the nanometer tin indium oxide precursor is separated by an industrial centrifuge device and cleaned with deionized distilled water and industrial high-purity alcohol until no impurity ion is generated and the requirements of a tin indium oxide target material are met, the precursor is dried in an oven and sintered to obtain nanometer tin indium oxide powder; and the dried nanometer tin indium oxide powder is subjected to vacuum packaging in a vacuum packaging machine to finish the production technology of nanometer tin indium oxide powder. The preparation method has the advantages of no pollution in the reaction process, low investment, low cost, and capability of realizing production of different amounts; and the obtained product has the advantages of good dispersion and uniform distribution.

Description

technical field [0001] The invention relates to a preparation method of nano-indium tin oxide (ITO) powder. Nano-indium tin oxide (ITO) powder is currently the best transparent conductor and is widely used in liquid crystal display technology, antistatic fields, electromagnetic shielding materials, conductive polymers, etc. . Its unique optical properties can be applied to high-end energy-saving and environmentally friendly glass, and it is one of the indispensable materials in the field of modern high-tech manufacturing. Background technique [0002] More than 95% of the world's high-end ITO materials are occupied by Japanese companies. At present, there is no company whose products can be used in high-end LCD panel targets. This technology has been controlled by Japan and European and American countries. The industrial production process of nano-ITO powder belongs to the high-tech in the field of nano-material preparation. At present, the methods for producing nano-ITO po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/12C01G19/02C01G15/00C25B3/13
Inventor 李小毛
Owner 安徽纳洛米特新材料科技股份有限公司
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