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Method and device for preparing scandium-zirconium powder

A technology of zirconium powder and zirconium precursor, applied in the field of solid electrolyte materials, can solve problems such as easy agglomeration

Pending Publication Date: 2020-05-12
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a method and device for preparing scandium-zirconium powder to solve the problem of easy agglomeration in the preparation of scandium-zirconium powder in the prior art

Method used

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  • Method and device for preparing scandium-zirconium powder
  • Method and device for preparing scandium-zirconium powder
  • Method and device for preparing scandium-zirconium powder

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Configure the reaction solution: dissolve zirconium oxychloride in water to obtain zirconium oxychloride solution, add Sc 2 o 3 Dissolve in hot hydrochloric acid to obtain a scandium chloride solution, mix and stir the above solutions to obtain a scandium-zirconium mixed solution, wherein the cation concentration of the scandium-zirconium mixed solution is 1.5 mol / l, and the scandium ion is the total number of scandium ions and zirconium ions. 10%.

[0062] Co-precipitation: put the mixed solution in a microwave reactor with a reaction temperature of 80°C, a stirring speed of 200r / min, and a microwave power of 500W, and add ammonia water to adjust the pH of the mixed solution of scandium and zirconium to 9 to prepare a precursor solution of scandium and zirconium. Filter the prepared scandium-zirconium precursor solution and wash it repeatedly with water until there is no Cl - , and then washed three times with alcohol, and dried at 100°C to obtain a scandium-zirconiu...

Embodiment 2

[0065] Configure the reaction solution: dissolve zirconium oxychloride in water to obtain zirconium oxychloride solution, mix Sc 2 o 3 Dissolve in hot hydrochloric acid to obtain a scandium chloride solution, mix and stir the above solutions to obtain a scandium-zirconium mixed solution, wherein the cation concentration of the scandium-zirconium mixed solution is 2mol / l, and the scandium ion is 8% of the total molar amount of the scandium ion and the zirconium ion %.

[0066] Co-precipitation: put the mixed solution in a microwave reactor with a reaction temperature of 30°C, a stirring speed of 100r / min, and a microwave power of 1000W, and ammonium bicarbonate was added to adjust the pH of the mixed solution of scandium and zirconium to 7 to prepare a precursor solution of scandium and zirconium. Filter the prepared scandium-zirconium precursor solution and wash it repeatedly with water until there is no Cl - , and then washed three times with alcohol, and dried at 80°C to o...

Embodiment 3

[0069] Configure the reaction solution: dissolve zirconium oxychloride in water to obtain zirconium oxychloride solution, mix Sc 2 o 3 Dissolve in hot hydrochloric acid to prepare a scandium chloride solution, mix and stir the above solutions to obtain a scandium-zirconium mixed solution, wherein the cation concentration of the scandium-zirconium mixed solution is 1 mol / l, and the scandium ion is 13% of the total moles of scandium ion and zirconium ion %.

[0070] Co-precipitation: put the mixed solution in a microwave reactor with a reaction temperature of 250°C, a stirring speed of 1000r / min, and a microwave power of 200W, and add ammonia water to adjust the pH of the mixed solution of scandium and zirconium to 8 to prepare a precursor solution of scandium and zirconium. Filter the prepared scandium-zirconium precursor solution and wash it repeatedly with water until there is no Cl - , and then washed three times with alcohol, and dried at 100°C to obtain a scandium-zircon...

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Abstract

The invention provides a method and a device for preparing scandium-zirconium powder. The method comprises the following steps: mixing a scandium-containing solution and a zirconium-containing solution to obtain a scandium-zirconium mixed solution; putting the scandium-zirconium mixed solution into a microwave reactor or an ultrasonic reactor, then adding a precipitant into the scandium-zirconiummixed solution under the action of microwave heating or ultrasonic waves, and adjusting the pH value of the system to be 7-11, so that the system is subjected to a precipitation reaction to obtain a scandium-zirconium precursor solution; filtering a scandium-zirconium precursor solution to obtain a precipitate; then sequentially carrying out water washing, alcohol washing and drying on the precipitate to obtain a scandium-zirconium precursor; calcining the scandium-zirconium precursor to obtain scandium-zirconium powder. The scandium-zirconium powder is prepared by utilizing a microwave or ultrasonic-assisted coprecipitation method, so that the problem that a product obtained by a coprecipitation method in the prior art is easy to agglomerate is effectively solved, and the conductivity ofthe scandium-zirconium powder serving as solid electrolyte powder is correspondingly improved.

Description

technical field [0001] The invention relates to the technical field of solid electrolyte materials, in particular to a method and device for preparing scandium-zirconium powder. Background technique [0002] Solid oxide fuel cell (SOFC) belongs to the third-generation fuel cell from the technical level. It is a new all-solid-state power generation device that directly and efficiently converts the chemical energy stored in fuel and oxidant into electrical energy. It has high energy conversion rate, The advantages of strong fuel adaptability and environmental friendliness have attracted more and more people's attention and have broad application prospects. SOFC technology has been industrialized in developed countries, such as Bloom Energy in the United States, but in my country, there is still a certain gap between the development of SOFC and developed countries in Europe and the United States. [0003] The core component of SOFC is the solid electrolyte. At present, most S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/626H01M10/0562
CPCC04B35/48C04B35/62605H01M10/0562H01M2300/0068C04B2235/3229C04B2235/3224C04B2235/3225C04B2235/3298C04B2235/3217C04B2235/443C04B2235/444C04B2235/96C04B2235/785Y02E60/10
Inventor 李晓艳王玮玮付云枫付国燕刘召波李诺
Owner CHINA ENFI ENGINEERING CORPORATION
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