Preparation, Catalyst and Application of Ordered Mesoporous Carbon Growth Carbon Nanotube Catalyst

A technology of carbon nanotubes and catalysts, which is applied in the field of fuel cells, can solve problems such as differences in catalytic activity, and achieve the effects of low cost, excellent oxygen reduction catalytic performance, and high electrical conductivity

Active Publication Date: 2019-12-03
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the researchers found that the catalytic activity of carbon materials varies greatly depending on their specific surface and pore structure.

Method used

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  • Preparation, Catalyst and Application of Ordered Mesoporous Carbon Growth Carbon Nanotube Catalyst
  • Preparation, Catalyst and Application of Ordered Mesoporous Carbon Growth Carbon Nanotube Catalyst
  • Preparation, Catalyst and Application of Ordered Mesoporous Carbon Growth Carbon Nanotube Catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of phenolic resin prepolymer:

[0042] Melt 2g of phenol at 50°C, add 0.5g of 20wt.% NaOH aqueous solution and stir for 10min, drop in 3.5g of 37wt.% formaldehyde aqueous solution and continue stirring for 10min, slowly raise the temperature to 60°C for 30min, cool to room temperature, and adjust with dilute HCl solution The pH value of the solution is 7.0. Dry it in a vacuum oven at 60°C for 6-12 hours to reduce the water content in the viscous liquid as much as possible. Dissolve the obtained soluble phenolic resin prepolymer in ethanol and stir for 12 hours. The precipitated sodium chloride Centrifuge and remove, and finally prepare an ethanol solution of soluble phenolic resin prepolymer with a mass fraction of 25 wt.% for use.

[0043] (2) Preparation of ordered mesoporous carbon in situ growth carbon nanotube composite catalyst

[0044] Dissolve 0.8g of F127 in 20g of ethanol, stir until clear and transparent, then add 4g of phenolic resin prepoly...

Embodiment 2

[0048] (1) Preparation of phenolic resin prepolymer:

[0049] Melt 2g of phenol at 50°C, add 0.5g of 20wt.% NaOH aqueous solution and stir for 10min, drop in 3.5g of 37wt.% formaldehyde aqueous solution and continue stirring for 10min, slowly raise the temperature to 70°C for 30min, cool to room temperature, and adjust with dilute HCl solution The pH value of the solution is 7.0, dry in a vacuum oven at 60°C for 6-12 hours to reduce the water content in the viscous liquid as far as possible, dissolve the obtained soluble phenolic resin prepolymer in ethanol and stir for 12 hours, and dissolve the precipitated sodium chloride Centrifuge and remove, and finally prepare an ethanol solution of soluble phenolic resin prepolymer with a mass fraction of 25 wt.% for use.

[0050] (2) Preparation of ordered mesoporous carbon in situ growth carbon nanotube composite catalyst

[0051] Dissolve 1.6g of F127 in 20g of ethanol, stir until clear and transparent, then add 4g of phenolic resi...

Embodiment 3

[0054] (1) Preparation of phenolic resin prepolymer:

[0055] Melt 2.2g resorcinol at 50°C, add 0.5g 20wt.% NaOH aqueous solution and stir for 10min, drop in 3.5g 37wt.% formaldehyde aqueous solution and continue stirring for 10min, slowly heat up to 80°C for 30min, cool to room temperature, Use dilute HCl solution to adjust the pH value of the solution to 7.0, dry it in a vacuum oven at 60°C for 6-12 hours to minimize the water content in the viscous liquid, dissolve the obtained phenolic resin prepolymer in ethanol and stir for 12 hours, and The precipitated sodium chloride is removed by centrifugation, and finally the soluble phenolic resin prepolymer ethanol solution is prepared for use.

[0056] (2) Preparation of ordered mesoporous carbon in situ growth carbon nanotube composite catalyst

[0057] Dissolve 2.1g of P123 in 20g of ethanol, stir until clear and transparent, then add 4g of phenolic resin prepolymer ethanol solution (the content of the prepolymer is 1g), and ...

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Abstract

The invention discloses a preparation method, catalyst and application of ordered mesoporous carbon growth carbon nanotube catalyst. The composite catalyst is made by in-situ growth of carbon nanotubes on nitrogen-doped ordered mesoporous carbon, that is, triblock copolymer is used as soft template agent, soluble resin is selected as carbon source, and transition metal salt is added during the preparation process. , in-situ introduction of transition metal elements, and the use of transition metal components introduced during the modification of ordered mesoporous carbon materials to generate active sites conducive to the growth of carbon nanotubes in a mixed atmosphere of ammonia and hydrocarbons, one-step realization of nitrogen and carbon nanotube growth. The ordered mesoporous carbon in-situ grown carbon nanotube composite catalyst has high active specific surface area and high electrical conductivity, exhibits excellent oxygen reduction catalytic performance and good electrochemical stability.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to the application of an ordered mesoporous carbon in-situ grown carbon nanotube composite catalyst in a proton exchange membrane fuel cell. Background technique [0002] Fuel cells have the advantages of fast response speed, high energy conversion efficiency, high energy density, and environmental protection and no pollution. These advantages make fuel cells recognized as the preferred clean and efficient power generation technology in the 21st century. In recent years, after decades of hard work by researchers, the key materials of fuel cells have been broken through and made great progress. However, fuel cells have not been widely used commercially, and their high cost is an important constraint. [0003] At present, electrocatalysts are the key materials of fuel cells, and their material cost, electrochemical reactivity and long-term operation stability are the biggest obsta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/96
CPCH01M4/9091H01M4/96Y02E60/50
Inventor 张华民邓呈维钟和香李先锋张桃桃
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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