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Platinum-based electrocatalyst suitable for large-scale production and preparation method and application thereof

An electrocatalyst, platinum-based technology, applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of high cost, complex preparation process, low utilization rate of platinum atoms, etc., and achieve difficult reunion, easy industrial scale-up, and simple preparation process green effect

Active Publication Date: 2022-04-08
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Therefore, the purpose of the present invention is to provide a platinum-based electrocatalyst suitable for large-scale production and its preparation method and application in view of the low utilization rate of platinum atoms in the existing commercial platinum-carbon catalyst, the preparation process is complicated, and the cost is high.

Method used

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  • Platinum-based electrocatalyst suitable for large-scale production and preparation method and application thereof
  • Platinum-based electrocatalyst suitable for large-scale production and preparation method and application thereof
  • Platinum-based electrocatalyst suitable for large-scale production and preparation method and application thereof

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Effect test

Embodiment 1

[0064] refer to figure 1 , to prepare platinum-based electrocatalysts.

[0065] (1) Put 20 g of Cabot carbon black Vulcan XC72R in 100 ml of ethanol, and ultrasonically treat it for 30 minutes at a power of 100 W to form a uniform first dispersion.

[0066] (2) Put 6.90g of silicotungstic acid in 100ml of ethanol to form a uniform second solution.

[0067] (3) Add the second solution dropwise into the first dispersion within 1 hour under magnetic stirring at 1500 rpm, and continue stirring for 10 hours. Vacuum suction filtration, washing the suction filtration product with 50 ml of ethanol, and then placing it in a blast drying oven at 80° C. for 1 hour, taking out and grinding to obtain a black powder, namely the intermediate.

[0068] (4) Put 0.94 g of platinum acetylacetonate in 100 ml of ethanol to form a uniform third solution.

[0069] (5) Put the black powder in 10 ml of ethanol and stir for 30 minutes to obtain a paste.

[0070] (6) Under magnetic stirring at 1500 ...

Embodiment 2

[0072] (1) Put 20 g of Cabot carbon black Vulcan XC72R in 100 ml of ethanol, and ultrasonically treat it for 30 minutes at a power of 100 W to form a uniform first dispersion.

[0073] (2) Put 4.44g of silicomomolybdic acid in 100ml of ethanol to form a uniform second solution.

[0074] (3) Add the second solution dropwise into the first dispersion within 1 hour under magnetic stirring at 1500 rpm, and continue stirring for 10 hours. Vacuum suction filtration, washing the suction filtration product with 50 ml of ethanol, and then placing it in a blast drying oven at 80° C. for 1 hour, taking out and grinding to obtain a black powder, namely the intermediate.

[0075] (4) Put 0.94 g of platinum acetylacetonate in 100 ml of ethanol to form a uniform third solution.

[0076] (5) Put the black powder in 10 ml of ethanol and stir for 30 minutes to obtain a paste.

[0077] (6) Under magnetic stirring at 1500 rpm, the third solution was added dropwise to the paste within 1 hour, an...

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Abstract

The invention relates to a platinum-based electrocatalyst suitable for large-scale production and a preparation method and application thereof, and the platinum-based electrocatalyst comprises polyoxometallate modified conductive carbon black and a platinum active component loaded on the polyoxometallate modified conductive carbon black. The platinum-based electrocatalyst has the advantages that the atom utilization rate and the electrocatalytic performance are improved, the cost of the catalyst is reduced, the catalyst is difficult to agglomerate, and the stability of the catalyst is improved. According to the preparation method, the preparation process is simple and green, complex reaction equipment and harsh reaction conditions are not needed, the utilization rate of the platinum active component is greatly increased, and the production cost of the platinum-based electrocatalyst is reduced.

Description

technical field [0001] The invention relates to a platinum-based electrocatalyst suitable for large-scale production, a preparation method and application thereof. Background technique [0002] Energy shortage and severe environmental crisis are two major challenges facing mankind today. Hydrogen (H 2 ) is considered as a potential energy source for next-generation power sources. The hydrogen evolution reaction (HER) in electrolyzed water is widely recognized as an essential route to produce clean hydrogen fuels with high calorific value. For platinum species, the adsorption energy of hydrogen at equilibrium potential is close to zero, which is the reason for its excellent HER performance [1]. So far, commercial platinum-on-carbon (Pt / C) consisting of carbon-supported platinum nanoparticles exhibits the smallest overpotential and fast kinetics. Therefore, it is considered to be the most effective benchmark catalyst for HER. However, the high cost hinders their widesprea...

Claims

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Application Information

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IPC IPC(8): C25B11/069C25B11/081C25B1/04
CPCY02E60/36
Inventor 孙春文张桐瑞
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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