Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single metal/multi-wall carbon nano tube type composite material, preparation method and application thereof

A multi-walled carbon nanotube, metal element technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc. Unable to achieve uniform distribution and controllable particle size, etc., to achieve the effect of improving anti-poisoning ability and overcoming uneven dispersion

Inactive Publication Date: 2012-10-17
BEIJING UNIV OF CHEM TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional methods of preparing carbon-based composites mainly include gel-sol method, blending method, solution immersion method, self-assembly method, etc., but the combination degree of each component in the synthesized composite material is not tight enough, and it is easy to fall off. Moreover, the metal and metal oxides in the composite material cannot be uniformly distributed and the particle size can be controlled. Many shortcomings make the structural advantages of the composite material impossible to realize.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single metal/multi-wall carbon nano tube type composite material, preparation method and application thereof
  • Single metal/multi-wall carbon nano tube type composite material, preparation method and application thereof
  • Single metal/multi-wall carbon nano tube type composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1.8626gCo(NO 3 ) 2 ·6H 2 O and 1.2004gAl(NO 3 ) 3 9H 2 O was prepared into 80mL salt solution, and then 2.3063g urea was added to make a mixed solution.

[0031] Put the above solution into a 100ml polytetrafluoroethylene resin liner, put it into a miniature autoclave to seal it, put the kettle into an oven for crystallization at 150°C for 24 hours, take out the liner after cooling, and take out the reactant , filtered with suction, washed twice with deionized water, and dried at 70°C for 15 hours.

[0032] Put the LDH precursor prepared above into a muffle furnace, raise the temperature to 700°C at a heating rate of 5°C / min, and keep it at 700°C for 120 minutes to obtain the corresponding roasted products, wherein the roasted products are cobalt oxide and cobalt aluminum spinel.

[0033] Spread 43 mg of the roasted product prepared above in a porcelain boat, put the porcelain boat into a horizontal quartz tube located in a tubular heating furnace, feed in nitrog...

Embodiment 2

[0037] 0.9313gCo(NO 3 ) 2 ·6H 2 O, 0.8205gMg(NO 3 ) 2 ·6H 2 O and 1.2004gAl(NO 3 ) 3 9H 2 O was prepared into 80mL salt solution, and then 2.3063g urea was added to make a mixed solution.

[0038] Put the above mixed solution into a 100ml polytetrafluoroethylene resin liner, put it into a miniature autoclave to seal, put the still in an oven for crystallization at 100°C for 15 hours, take out the liner after cooling, and take out The reactant was suction filtered, washed twice with deionized water, and dried at 70°C for 15 hours.

[0039] Put the LDH precursor prepared above into a muffle furnace, raise the temperature to 700°C at a heating rate of 5°C / min, and keep it at 700°C for 120 minutes to obtain the corresponding roasted products, wherein the roasted products are cobalt oxide, oxide Magnesium and cobalt aluminum spinel.

[0040] Spread 48 mg of the roasted product prepared above in a porcelain boat, put the porcelain boat into a horizontal quartz tube located...

Embodiment 3

[0044] Weigh 3.7252g Co(NO 3 ) 2 ·6H 2 O and 2.4008gAl(NO 3 ) 3 9H 2 O was dissolved in 160ml deionized water to make a mixed salt solution, and then weighed 1.5361gNaOH and 1.6962gNaOH 2 CO 3 Make a mixed alkali solution, put the mixed salt solution in a 500mL three-necked flask, add the mixed alkali solution to the salt solution drop by drop under constant stirring until pH = 10, and age the mixture in a water bath at 60°C for 6 hours , after the reaction was completed, suction filtered, washed with deionized water until neutral, and dried at 70°C for 20 hours.

[0045] Put the LDH precursor prepared above into a muffle furnace, raise the temperature to 700°C at a heating rate of 5°C / min, and keep it at 700°C for 120 minutes to obtain the corresponding calcined products, wherein the calcined products are cobalt oxide and sharp spar.

[0046] Spread 75 mg of the roasted product prepared above in a porcelain boat, put the porcelain boat into a horizontal quartz tube lo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a single metal / multi-wall carbon nano tube type composite material, a preparation method and application thereof. According to the composite material, the single metal is uniformly loaded on the carbon nano tube, wherein the mass percentage of the carbon nano tube is 63 to 95 percent, the particle diameter of the single metal is 15 to 28 nanometers, and the diameter of the carbon nano tube is 10 to 30 nanometers. The preparation method comprises the following steps of: preparing a laminated plate containing LDH of Co, Cu and Mg activity or activity-aid species by using the micro adjustable characteristics of the composition and the structure of the LDH laminated plate, growing a carbon composite material by roasting and a chemical vapor deposition method, and meanwhile reducing mixed metal oxide into the single metal so as to obtain the single metal / multi-wall carbon nano tube type composite material. A noble platinum metal is loaded on the composite material toprepare an anode catalyst of a direct methanol fuel cell, the peak current density of the catalyst on methanol electro-catalysis oxidation is 21 to 36mA.cm<2>, and the specific activity can reach 235to 451 mA / mg. The preparation method has the advantages of simple preparation flow, low cost, environment friendliness and the like, and is suitable for industrialized application.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a simple metal / multi-wall carbon nanotube composite material and a preparation method thereof, which are applied to direct methanol fuel cells. Background technique [0002] Energy has always been an important basis for the development of the national economy, but the reserves of these fossil fuels on the earth are limited, not inexhaustible. Therefore, it is urgent to develop new clean and pollution-free energy sources. Among them, fuel cells have received widespread attention in many countries. A fuel cell is a device that directly converts chemical energy stored in fuel and oxidant into electrical energy through electrode reactions. Its biggest feature is that it does not go through a heat engine process. Therefore, it is not limited by the Carnot cycle and has a high energy conversion rate. Moreover, it has little environmental pollution a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88B01J23/75
CPCY02E60/50
Inventor 李峰张春芳张璐项顼
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com