Nitrogen-doped porous carbon non-metal catalyst and preparation method thereof, and application of nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction

A non-metal catalyst, nitrogen-doped porous carbon technology, applied in electrical components, battery electrodes, circuits, etc., to achieve high-scale production value, abundant and controllable raw materials, and optimized catalytic performance

Active Publication Date: 2020-04-10
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The catalytic material does not use any precious metals, it can even be metal-free, and the source of raw materials is abundant, which solves the problems of production cost and quality stability that may be faced after the large-scale production of fuel cells

Method used

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  • Nitrogen-doped porous carbon non-metal catalyst and preparation method thereof, and application of nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction
  • Nitrogen-doped porous carbon non-metal catalyst and preparation method thereof, and application of nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction
  • Nitrogen-doped porous carbon non-metal catalyst and preparation method thereof, and application of nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Pour 80mL of 0.5mol / L glucose solution into the liner of a 100mL polytetrafluoroethylene reactor, seal it in a stainless steel reactor and put it in an oven at 180°C for 10 hours; after the reaction, the obtained materials are centrifuged at 9500rpm and washed with deionized water for 3 Second, dry at 60°C for 24 hours in a blast oven to obtain hydrothermal glucose carbon spheres.

[0031] Grind and mix the prepared hydrothermal glucose carbon spheres with urea and zinc chloride at a mass ratio of 1:10:1, put them into an alumina ark, and then put them into a quartz tube in a tube furnace. Nitrogen was passed for more than 60 minutes to ensure that the air was exhausted, and the temperature in the tube furnace was raised to 900°C at a heating rate of 5°C / min. After holding for 2 hours, it was cooled with the furnace to obtain an electrocatalyst for oxygen reduction reaction-nitrogen-doped porous carbon. catalyst.

[0032] figure 1 It is a scanning electron microscope ...

Embodiment 2

[0036] Pour 80mL of 0.5mol / L glucose solution into a 100mL polytetrafluoroethylene reactor liner, seal it in a stainless steel reactor and put it in an oven at 180°C for 10h; Wash 3 times and dry at 60°C for 24 hours in a blast oven to obtain hydrothermal glucose carbon spheres.

[0037] Grind and mix the prepared hydrothermal glucose carbon spheres with urea and zinc chloride at a mass ratio of 1:10:1, put them into an alumina ark, and then put them into a quartz tube in a tube furnace. Nitrogen was passed for more than 60 minutes to ensure that the air was exhausted, and the temperature in the tube furnace was raised to 1000°C at a heating rate of 5°C / min. After holding for 2 hours, it was cooled with the furnace to obtain an electrocatalyst for oxygen reduction reaction-nitrogen-doped porous carbon. catalyst.

[0038] Figure 4 It is the nitrogen adsorption-desorption curve of the oxygen reduction reaction electrocatalyst nitrogen-doped porous carbon obtained in Example 2. ...

Embodiment 3

[0040] Pour 80mL of 0.5mol / L glucose solution into a 100mL polytetrafluoroethylene reactor liner, seal it in a stainless steel reactor and put it in an oven at 180°C for 10 hours; after the reaction, the obtained materials are centrifuged at 9500rpm and washed with deionized water in sequence 3 times, drying in a blast oven at 60°C for 24 hours to obtain hydrothermal glucose carbon spheres.

[0041] Grind and mix the prepared hydrothermal glucose carbon spheres with urea and zinc chloride at a mass ratio of 1:10:1, put them into an alumina ark, and then put them into a quartz tube in a tube furnace. Nitrogen was passed for more than 60 minutes to ensure that the air was exhausted, and the temperature in the tube furnace was raised to 900°C at a heating rate of 5°C / min. After holding for 2 hours, it was cooled with the furnace to obtain an electrocatalyst for oxygen reduction reaction and a nitrogen-doped porous carbon catalyst. .

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Abstract

The invention discloses a nitrogen-doped porous carbon non-metal catalyst and a preparation method thereof, and application of the nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction, and belongs to the technical field of energy and nano material preparation. According to the method, the non-metal nitrogen-doped porous carbon catalyst is prepared by combining hydrothermal polymerization with a high-temperature carbonization doping process. The non-metal nitrogen-doped porous carbon catalytic material shows oxygen reduction reaction electrocatalytic activity similarto that of a commercial platinum-carbon catalyst in an alkaline electrolyte, and is superior to the commercial platinum-carbon catalyst in stability and methanol resistance. The nitrogen-doped porouscarbon non-metal catalyst and the preparation method thereof, and the application of the nitrogen-doped porous carbon non-metal catalyst in oxidation-reduction reaction have the advantages of the simple technique and wide raw material sources, and are expected to implement high-efficiency and low-cost large-scale production. The oxygen reduction reaction electrocatalyst can be applied to the fields of alkaline fuel cells, metal-air battery cathode materials and the like.

Description

technical field [0001] The invention relates to the technical field of energy and nanometer material preparation, in particular to a nitrogen-doped porous carbon non-metallic catalyst, a preparation method thereof, and an application in oxidation-reduction reactions. Background technique [0002] With the rapid development of human civilization, energy consumption is increasing rapidly. The use of traditional fossil fuels—such as oil, coal, and natural gas—as a national energy supply solution faces many problems. First, fossil energy reserves are limited. Second, the burning of fossil fuels produces a large amount of greenhouse gases. Studies have shown that massive emissions of greenhouse gases are the main cause of global warming in recent years. Furthermore, the distribution of fossil energy is extremely uneven. In today's increasingly tense international situation, realizing energy independence is of great significance to national security. Therefore, a flexible dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/96H01M4/90H01M4/86H01M4/88
CPCH01M4/8605H01M4/88H01M4/90H01M4/96Y02E60/50
Inventor 李琦杨炜沂莫喆阳
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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