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Active material with high Zr proportioning and preparation method thereof

An active material and active technology, applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of no breakthrough, the inability to improve the electrocatalytic performance, and the inability to apply Ru-Zr oxides, so as to improve the electrocatalytic activity, The effect of low cost and simple preparation of raw materials

Inactive Publication Date: 2010-09-01
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they tested coatings with different ratios of RuZr and observed that the electrocatalytic performance could not be improved
In fact, Ru-Zr oxide cannot be applied, and the Zr-Ru oxide material with Zr as the carrier has not seen a breakthrough

Method used

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  • Active material with high Zr proportioning and preparation method thereof
  • Active material with high Zr proportioning and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Preparation of Ru-Zr mixed oxide material with high Zr ratio, ruthenium trichloride and ZrCl 4As the source material, weigh each source material according to the ratio of Zr:Zr+Ru molar ratio of 3:10, and dissolve them in ethanol solution respectively, use ultrasonic vibration to make them evenly dispersed, and mix the two evenly after the solid drug is fully dissolved , so that the concentration of the solute is controlled at about 2mol / L, and allowed to stand for 12 hours to prepare a slurry. Prepare the pure titanium substrate, that is, corrode the pure titanium substrate in a boiling state of 10% oxalic acid solution for 1 hour, take it out, rinse it with distilled water, and dry it. Apply the above-mentioned active slurry on the pre-treated titanium plate with a brush pen, heat and evaporate at 80-100°C, heat and cure at 120-180°C under infrared light, and then oxidize in a box furnace at 300°C After 10 minutes, take out of the furnace and air cool, continue to co...

Embodiment 2

[0029] The Zr-based Ru-Zr mixed oxide material is based on ruthenium trichloride and ZrO(NO 3 ) 2 As the source material, each source material was weighed according to the ratio of Zr:Zr+Ru molar ratio of 6:10, and dissolved in isopropanol solution respectively, and ultrasonically oscillated to make it evenly dispersed. After the solid drug was fully dissolved, the two Mix evenly so that the concentration of the solute is controlled at about 3.5mol / L, and let it stand for 12 hours to prepare a coating solution. Apply the above active slurry on the pre-treated titanium plate (see example 1) with a brush pen, heat and evaporate at 80~100°C, and then heat and cure under infrared light at 120~180°C Oxidize in a box furnace for 10 minutes, leave the furnace to air cool, continue coating, repeat the above operations until the ruthenium content on the titanium base surface reaches 10g / L, anneal at 300°C for 1 hour after the last coating and drying, and cool out of the furnace. Meas...

Embodiment 3

[0031] The Zr-based Ru-Zr mixed oxide material is based on ruthenium trichloride and ZrO(NO 3 ) 2 As the source material, weigh each source material according to the ratio of Zr:Zr+Ru molar ratio of 8.5:10, and dissolve them in butanol solution respectively, use ultrasonic vibration to make them evenly dispersed, and mix the two after the solid drug is fully dissolved Evenly, so that the concentration of the solute is controlled at about 2.2mol / L, and it is left to stand for 12 hours to prepare a coating solution. Apply the above active slurry on the pre-treated titanium plate (see example 1) with a brush pen, heat and evaporate at 80~100°C, and then heat and cure under infrared light at 120~180°C Oxidize in a box furnace for 10 minutes, leave the furnace to air cool, continue coating, repeat the above operations until the ruthenium content on the titanium base surface reaches 6g / L, anneal at 300°C for 1 hour after the last coating and drying, and cool out of the furnace. Me...

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Abstract

The invention provides an electrocatalysis active material with a high Zr proportioning containing a Ru oxide and a preparation method thereof, wherein the mole content of Zr in the active material is no less than 20%. The method comprises the following steps of: dissolving an Ru salt and a Zr salt as source materials into alcohol solution to prepare active serous fluid, evaporating and curing by heating, and oxidizing and sintering the prepared active serous fluid to obtain the electrocatalysis active material with the high Zr proportioning containing the Ru oxide. Compared with pure Ru active materials, the active area of the active material in the invention is remarkably improved, thereby the active material has excellent electrocatalysis activity. The active material has simple preparation method, strong operability, easily obtained raw materials and low cost.

Description

technical field [0001] The invention belongs to the field of electrode materials applied to electrochemistry and energy industry, and specifically relates to a material with high electrocatalytic performance and a preparation method thereof. Background technique [0002] The earliest electrode material used in the electrochemical industry was artificial graphite. After the advent of oxides containing noble metal elements in 1967, graphite electrodes were gradually replaced by them. Such oxides have been found to have very high electrocatalytic activity and are therefore referred to as active oxide materials, or simply active materials. So far, the most superior active materials are still ruthenium-containing oxide materials. A large number of experiments have shown that the use of oxides with the same crystal structure as ruthenium dioxide (ie, rutile phase) as a carrier can not only improve the electrocatalytic performance, but also significantly reduce the amount of prec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/08
Inventor 王欣唐电何云南张腾邵艳群唐中帜
Owner FUZHOU UNIV
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