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Method and device for preparing high-purity indium oxide powder by electrolysis

A technology of indium oxide and electrolysis, which is applied in the direction of electrolysis components, electrolysis process, electrodes, etc., can solve the problems of easy agglomeration of indium oxide powder, uneven particle size distribution, poor batch consistency, etc.

Active Publication Date: 2020-07-07
云南锡业集团(控股)有限责任公司研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The indium oxide powder prepared by the neutralization method has problems such as easy agglomeration, uneven particle size distribution, and poor batch consistency.

Method used

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  • Method and device for preparing high-purity indium oxide powder by electrolysis
  • Method and device for preparing high-purity indium oxide powder by electrolysis
  • Method and device for preparing high-purity indium oxide powder by electrolysis

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: the method for preparing high-purity indium oxide powder by this electrolytic method is to be equipped with the NH of concentration 2mol / L 4 NO 3 The solution (pH is 6, temperature is 20°C) is carried out in an electrolytic cell, and three high-purity indium plates (purity 99.992) are set in the electrolytic cell as positive electrodes and three high-purity indium plates are used as negative electrodes, and positive electrodes and negative electrodes alternate Set up, the anode and cathode electrodes are connected to the positive and negative poles of the power supply respectively, and electrolysis is performed after turning on the power supply, the power supply voltage is 10V, and the current density is 10mA / cm 2 ; During the electrolysis process, the polarity of the positive electrode and the negative electrode is exchanged, the exchange time interval is 30s, and the precipitation in the electrolytic cell is collected at an interval of 5h, and washed 3 t...

Embodiment 2

[0030] Embodiment 2: the method for preparing high-purity indium oxide powder by this electrolytic method is to be equipped with the NH of concentration 5mol / L 4 Cl solution (pH 10, temperature 25°C) electrolytic cell, 5 high-purity indium plates (purity 99.993) are set in the electrolytic cell as anode electrodes and 5 high-purity indium plates as cathode electrodes, anode electrodes and cathode electrodes Alternately set, the anode and cathode electrodes are connected to the positive and negative poles of the power supply respectively, and electrolysis is performed after turning on the power supply, the power supply voltage is 5V, and the current density is 50mA / cm 2 ; During the electrolysis process, the polarity of the positive electrode and the negative electrode is exchanged, the exchange time interval is 10s, and the precipitation in the electrolytic cell is collected at an interval of 2h, and washed 4 times with ultrapure water and absolute ethanol in sequence (until th...

Embodiment 3

[0034] Embodiment 3: the method for preparing high-purity indium oxide powder by this electrolytic method is to be equipped with the NH of concentration 1mol / L 4 One high-purity indium plate (purity 99.995) is set in the electrolytic cell of Cl solution (pH is 8, temperature is 55°C) as the positive electrode and one high-purity indium plate is the negative electrode, the positive electrode and the negative electrode are arranged alternately, and the positive electrode The positive and negative electrodes of the power supply and the negative electrode are connected to the positive and negative poles of the power supply, and the electrolysis is performed after turning on the power supply. The power supply voltage is 1V and the current density is 80mA / cm 2 ; During the electrolysis process, the polarity of the positive electrode and the negative electrode is exchanged, the exchange time interval is 50s, and the precipitation in the electrolytic cell is collected at an interval of...

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Abstract

The invention discloses a method and a device for preparing high-purity indium oxide powder by electrolysis, which comprises setting more than one high-purity indium plate as an anode and more than one high-purity indium plate as a cathode and anode in an electrolytic cell. Alternately set up with the negative electrode, the positive electrode and the negative electrode are respectively connected to the positive and negative electrodes of the power supply, and the electrolysis is performed after the power is turned on. High-purity indium oxide powder can be obtained by calcining; the method of the invention has the characteristics of simplicity, easy operation, short process flow, high efficiency and continuous, no pollution, etc., and is suitable for industrial production of high-purity indium oxide.

Description

technical field [0001] The invention belongs to the technical field of indium oxide preparation, and in particular relates to a method and a device for preparing high-purity indium oxide powder by electrolysis. Background technique [0002] In 2 o 3 It is a transparent semiconductor functional material, which has the unique advantages of large band gap, small resistivity and high catalytic activity. It has application prospects in the fields of optoelectronic products, active catalysts and gas responders. Such as tin-doped indium oxide (ITO) has a very high conductivity (10 4 Ω -1 cm -1 ) and high visible light transmittance (85%~95%). Now more than 80% of the world's consumer metal indium is used to make ITO targets. ITO targets are mainly involved in the production process of liquid crystal displays (LCDs). ITO is also widely used in touch screens, organic light-emitting flat-panel displays, solar cells, photoelectric converters, infrared reflection devices, and auto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/00C25B11/04C25B15/08C25B9/06C25B9/17
CPCC25B1/00C25B11/04C25B15/08C25B9/17
Inventor 彭巨擘张启旺崔涛许永姿陈光云
Owner 云南锡业集团(控股)有限责任公司研发中心
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