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Active oxide material containing Ce and preparation method thereof

A technology of active oxides and active materials, which is applied in the field of Ce-containing active oxide materials and their preparation, can solve unprecedented problems and achieve the effects of stabilizing the organizational structure, improving electrocatalytic activity, and low cost

Inactive Publication Date: 2012-06-20
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses low-temperature sintering pyrolysis technology to prepare RuO 2 -CeO 2 Electrode material, unprecedented

Method used

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  • Active oxide material containing Ce and preparation method thereof
  • Active oxide material containing Ce and preparation method thereof
  • Active oxide material containing Ce and preparation method thereof

Examples

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preparation example Construction

[0018] The preparation of the Ce-containing active oxide material of the present invention generally adopts a thermal decomposition method. The specific implementation steps and methods are:

[0019] (1) Preparation of Ce-containing active oxide active slurry:

[0020] Active components Ru to RuCl 3 As the source material, the inactive component Ce is CeCl 3 As the source substance, weigh each source substance according to the ratio of Ce:Ru molar ratio of 1:9-9:1, and dissolve them in ethanol respectively. After the source substance is fully dissolved, mix the two solutions evenly; control the concentration of the solute At about 0.2-2 g / L, mix evenly with a magnetic stirrer;

[0021] (2) Sintering of Ce-containing active oxide active slurry:

[0022] The Ce-containing active oxide active slurry is heated and evaporated at 80-150°C until the slurry is solidified, then oxidized and sintered in a box furnace at 250-280°C for 1-2h, and then air-cooled to obtain Ce-containing...

Embodiment 1

[0029] Prepare the pure titanium substrate, that is, corrode the pure titanium substrate in the boiling state of 10% oxalic acid solution for 1 h, take it out, wash it with distilled water, dry it, and immerse it in ethanol solution for later use. Preparation of Ce-containing Active Oxide Materials by Ruthenium Trichloride and CeCl 3As the source material, each source material was weighed according to the ratio of Ru:Ce molar ratio 5:5, and dissolved in absolute ethanol respectively, and dispersed evenly by ultrasonic vibration, and the two were mixed evenly after the solid drug was fully dissolved, so that The concentration of the solute is controlled at 1.0 mol%, and it is allowed to stand for 8-20 hours to prepare a slurry. Apply the above-mentioned active slurry on the pre-treated titanium plate with a brush, evaporate it by heating at 80-100°C, and then heat and solidify it in a drying oven at 150°C, then oxidize it in a box furnace at 250-270°C for 10 Minutes, come out ...

Embodiment 2

[0031] The Ce-based Ce-containing active oxide mixed material is based on ruthenium trichloride and CeCl 3 As the source material, each source material was weighed according to the ratio of Ce:Ru molar ratio 9:1, and dissolved in anhydrous ethanol solution respectively, and ultrasonically oscillated to make it evenly dispersed. After the solid drug was fully dissolved, the two were mixed evenly. Control the concentration of the solute at about 0.5mol / L, and let it stand for 12 hours to prepare a coating solution. Apply the above-mentioned active slurry on the pre-treated titanium plate (see Example 1) with a brush pen, evaporate it by heating at 80~100°C, and then heat and cure it under infrared light at 120~180°C. Oxidize in a type furnace for 10 minutes, take out the furnace and air cool, continue coating, repeat the above operation until the paint is used up, anneal at 260°C for 1 hour after the last coating and drying, and cool out of the furnace. In order to add Ce to be...

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Abstract

The invention discloses an active oxide material containing Ce and a preparation method thereof. The molar ratio of Ce and Ru of the active oxide material is from 3:7 to 7:3, CeCI3 and RuCI3 are used as source materials to be soluble in ethanol so as to be made into active slurry, and the active slurry is evaporated and solidified through heating and is oxidized and sintered to obtain the Ru-containing oxide active material with high Ce. Compared with pure RuO2 active materials and RuO2 active materials with 10% molar content of Ce, active area of the active oxide material is improved remarkably, and the active oxide material containing Ce has superior electro-catalysis activity. The active oxide material containing Ce is simple in preparation method, strong in operability, easy to obtain raw materials and low in cost, and has remarkable economic and social benefits.

Description

technical field [0001] The invention belongs to the field of electrode materials for applied electrochemistry and energy industry, and relates to a material with high electrocatalytic performance and a preparation method thereof, in particular to a Ce-containing active oxide material and a preparation method thereof. Background technique [0002] RuO 2 With intrinsic electrochemical activity, it shows very high electrocatalytic activity in many electrochemical industries, so it is called active oxide material, or simply active material. In terms of industrial applications, so far, the most superior active material is still RuO 2 . 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 precious metals, thereby reducing costs. The most common active oxides are Ti-Ru, Sn-Ru, Ti-Ru-Ir, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63B01J37/08C01F17/00C01G55/00
Inventor 王欣张腾唐电孙俊梅刘雪华邵艳群李炯
Owner FUZHOU UNIV
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