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Two-dimensional embedded structure catalyst, as well as preparation method and application thereof

A catalyst and layer structure technology, applied in structural parts, electrochemical generators, fuel cells, etc., can solve the problems of poor catalyst durability and high cost of proton exchange membrane fuel cells, etc., and achieve the goal of improving life and good durability Effect

Inactive Publication Date: 2017-09-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor durability of existing catalysts, the cost of proton exchange membrane fuel cells remains high

Method used

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  • Two-dimensional embedded structure catalyst, as well as preparation method and application thereof
  • Two-dimensional embedded structure catalyst, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Disperse 1 g of black phosphorene (the number of layers of black phosphorene used is 2 layers) and 0.05 g of noble metal precursor chloroplatinic acid in 10 mL of water, and stir thoroughly for 30 minutes to make the dispersion uniform;

[0023] 2) Add 100 mL of 0.5 mol / L sodium borohydride aqueous solution to the dispersion obtained in step 2), and stir thoroughly for 30 minutes;

[0024] 3) Filtration, and the obtained product was heated and dried at 100°C for 60 hours under the protection of nitrogen;

[0025] 4) The product obtained in step 3) was ball milled for 10 hours under the protection of nitrogen to obtain a highly durable two-dimensional embedded structure catalyst in which platinum metal was embedded between black phosphorene layers.

Embodiment 2

[0027] 1) Disperse 1 g of black phosphorene (the number of layers of black phosphorene used is 50 layers) and 10 g of noble metal precursor chloroplatinic acid in 100 mL of ethanol, and fully stir for 180 minutes to make the dispersion uniform;

[0028] 2) Add 10 mL of 10 mol / L sodium borohydride aqueous solution to the dispersion obtained in step 2), and stir thoroughly for 180 minutes;

[0029] 3) Filtration, and the obtained product was heated and dried at 180 °C for 6 hours under the protection of argon;

[0030] 4) The product obtained in step 3) was ball milled for 100 hours under the protection of argon to obtain a highly durable two-dimensional embedded structure catalyst in which platinum metal was embedded between black phosphorene layers.

Embodiment 3

[0032] 1) Disperse 1 g of black phosphorene (the number of layers of black phosphorene used is 25) and 5 g of noble metal precursor ruthenium chloride in 55 mL of propanol, and stir thoroughly for 80 minutes to disperse evenly;

[0033] 2) Add 55 mL of 5 mol / L sodium borohydride aqueous solution to the dispersion obtained in step 2), and stir thoroughly for 80 minutes;

[0034] 3) Filtration, and the obtained product was heated and dried at 140 °C for 30 hours under the protection of helium;

[0035] 4) The product obtained in step 3) was ball milled for 60 hours under the protection of helium to obtain a highly durable two-dimensional embedded structure catalyst in which ruthenium metal was embedded between black phosphorene layers.

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Abstract

The invention discloses a two-dimensional embedded structure catalyst, as well as a preparation method and application thereof. The catalyst is prepared by embedding noble metal into the laminar structure of black phosphorene which has a two-dimensional laminar structure and serves as a carrier, wherein the content of noble metal is 2-500 percent of the weight of the carrier. The catalyst has excellent durability and high stability, can be used for prolonging the service life of a fuel cell, and can be used as a catalyst of a proton exchange membrane fuel cell.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a catalyst with a two-dimensional embedded layer structure and its preparation method and application. Background technique [0002] Proton exchange membrane fuel cells have attracted widespread attention due to their advantages of high efficiency and zero pollution, and have broad application prospects in the fields of transportation, mobile power and backup power stations. Currently, proton exchange membrane fuel cells mainly use platinum and platinum-based metals supported by carbon materials as catalysts, which have high catalytic efficiency. However, due to the poor durability of existing catalysts, the cost of proton exchange membrane fuel cells remains high. Therefore, it is of great significance to develop proton exchange membrane fuel cell catalysts with high durability. Contents of the invention [0003] Aiming at the deficiencies of the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M8/1016
CPCH01M4/921H01M4/925H01M8/1016Y02E60/50
Inventor 徐峰
Owner FUZHOU UNIV
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