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Cerium-doped tungsten phosphide submicron sphere composite material, preparation method and application thereof

A composite material, sub-micron technology, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve problems such as the improvement of electrical conductivity and catalytic activity, and achieve enhanced adsorption and desorption capabilities. The effect of strong performance and improved hydrogen evolution activity

Active Publication Date: 2020-03-24
陕西帅能能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a cerium-doped tungsten phosphide submicron sphere composite material to solve the problem that the electrical conductivity and catalytic activity of the existing metal tungsten phosphide are to be improved when the hydrogen evolution electrocatalyst is used

Method used

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  • Cerium-doped tungsten phosphide submicron sphere composite material, preparation method and application thereof
  • Cerium-doped tungsten phosphide submicron sphere composite material, preparation method and application thereof
  • Cerium-doped tungsten phosphide submicron sphere composite material, preparation method and application thereof

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Effect test

Embodiment 1

[0038] Dissolve 0.24 g of tungsten chloride in 30 mL of absolute ethanol to obtain an ethanol solution of tungsten chloride; then add 0.010 g of cerium chloride to the above solution, so that the molar ratio of cerium in the entire tungsten and cerium elements is 6 %, stirred and dissolved to obtain a yellow transparent mixed solution; the mixed solution was transferred to the reaction kettle, and carbon fiber paper (2×5 cm 2 ) placed against the wall, heated to 200 °C, and reacted for 10 h; after that, the reactor was cooled naturally, the carbon fiber paper was taken out, rinsed with absolute ethanol, and vacuum-dried at 60 °C for 12 h to obtain carbon fiber paper loaded with cerium doped Tungsten oxide submicron sphere samples. The carbon fiber paper-loaded cerium-doped tungsten oxide submicron sphere sample and 4 g sodium hypophosphite were placed together in a tube furnace, where the sodium hypophosphite was placed at the upper tuyere, and the temperature was 10 °C under ...

Embodiment 2

[0043] Dissolve 0.24 g of tungsten chloride in 30 mL of absolute ethanol to obtain an ethanol solution of tungsten chloride; then add 0.017 g of cerium chloride to the above solution, so that the molar ratio of cerium in the entire tungsten and cerium elements is 10 %, stirred and dissolved to obtain a yellow transparent mixed solution; the mixed solution was transferred to the reaction kettle, and carbon fiber paper (2×5 cm 2) placed against the wall, heated to 200 °C, and reacted for 10 h; the reactor was cooled naturally, the carbon fiber paper was taken out, rinsed with absolute ethanol, and vacuum-dried at 60 °C for 12 h to obtain carbon fiber paper loaded with cerium-doped tungsten oxide submicron Ball samples. The carbon fiber paper-loaded cerium-doped tungsten oxide submicron sphere sample and 4 g sodium hypophosphite were placed together in a tube furnace, where the sodium hypophosphite was placed at the upper tuyere, and the temperature was 10 °C under argon (flow ra...

Embodiment 3

[0045] Dissolve 0.24 g of tungsten chloride in 30 mL of absolute ethanol to obtain an ethanol solution of tungsten chloride; then add 0.013 g of cerium chloride to the above solution, so that the molar ratio of cerium in the entire tungsten and cerium elements is 8 %, stirred and dissolved to obtain a yellow transparent mixed solution; the mixed solution was transferred to the reaction kettle, and carbon fiber paper (2×5 cm 2 ) placed against the wall, heated to 200 °C, and reacted for 10 h; the reactor was cooled naturally, the carbon fiber paper was taken out, rinsed with absolute ethanol, and dried in vacuum at 60 °C for 12 h to obtain carbon fiber paper-loaded cerium-doped tungsten oxide submicron spheres sample. The carbon fiber paper-loaded cerium-doped tungsten oxide submicron sphere sample and 4 g sodium hypophosphite were placed together in a tube furnace, where the sodium hypophosphite was placed at the upper tuyere, and the temperature was 10 °C under argon (flow ra...

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Abstract

The invention provides a cerium-doped tungsten phosphide submicron sphere composite material, a preparation method and application thereof. Cerium in the cerium-doped tungsten phosphide submicron sphere composite material is uniformly doped in tungsten phosphide submicron spheres, and the cerium-doped tungsten phosphide submicron sphere composite material is prepared by loading cerium-doped tungsten oxide submicron spheres on a substrate through a solvothermal synthesis method and then phosphating the cerium-doped tungsten oxide submicron spheres. The preparation process adopted by the invention is simple, the obtained composite material has uniform particles, and when used as an industrial water electrolysis catalyst, the composite material has high charge transmission speed, enhanced hydrogen adsorption capacity and desorption capacity, improved electro-catalytic hydrogen evolution activity, excellent catalytic performance, and strong stability.

Description

technical field [0001] The invention relates to a composite material, in particular to a cerium-doped tungsten phosphide submicron sphere composite material and its preparation method and application. Background technique [0002] Energy crisis and environmental pollution are the urgent problems facing the current society. The production of hydrogen by electrocatalytic water splitting is an effective way to solve the above crises. However, in the actual process of electrocatalytic water splitting to produce hydrogen Therefore, obtaining high-efficiency hydrogen evolution electrocatalysts to improve the efficiency of electrocatalytic hydrogen evolution reactions has become the key to the development of hydrogen production by electrolysis of water. The currently recognized high-efficiency hydrogen evolution electrocatalysts are platinum-group noble metals, but precious metal reserves are scarce and expensive, which greatly limits their wide application. Therefore, it is urgent...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04B01J27/188B01J37/08B01J37/28
CPCC25B1/04B01J27/188B01J37/08B01J37/28C25B11/091B01J35/33Y02E60/36
Inventor 付彦惠吕存财王淑芳
Owner 陕西帅能能源科技有限公司
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