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Carbon material with catalytic performance for oxygen reduction reaction and its preparation method and application

A technology of catalytic performance and carbon materials, applied in the field of carbon nanomaterials preparation and fuel cells, can solve the problems of slow fuel cells, insufficient large-scale production technology, expensive catalytic materials, etc., and achieve easy operation and excellent resistance to CO poisoning. , the effect of reducing renewable resources

Active Publication Date: 2019-12-20
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, a lot of research on fuel cells has been carried out at home and abroad. However, due to the relatively expensive manufacturing of fuel cell catalytic materials and the unqualified large-scale production technology, the development and application of fuel cells in large-scale and commercial applications is relatively slow.

Method used

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  • Carbon material with catalytic performance for oxygen reduction reaction and its preparation method and application
  • Carbon material with catalytic performance for oxygen reduction reaction and its preparation method and application
  • Carbon material with catalytic performance for oxygen reduction reaction and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Preparation of carbon quantum dot solutions with fluorescent properties and carbon materials with excellent catalytic properties for oxygen reduction reaction: After washing and drying chrysanthemums, weigh 1 g of chrysanthemums and 30 mL of distilled water into 50 mL of polytetrafluoroethylene In the reaction kettle of gallbladder, react at 170°C for 24 h, cool to room temperature after the reaction, centrifuge the obtained brown-black product, and collect the solution part to be carbon quantum dots with fluorescent properties, and use the collected black solid to Washed repeatedly with ethanol and deionized water, mixed with 3g zinc chloride at room temperature for activation treatment, then placed in a tube furnace, reacted at 700°C for 4h, then washed repeatedly with hydrochloric acid and deionized water, and then placed Dry it in a vacuum oven at 90° C. to obtain a nitrogen-doped carbon material with catalytic activity.

[0019] Test the application of N-doped carb...

Embodiment 2

[0022] Preparation of carbon quantum dot solutions with fluorescent properties and carbon materials with excellent catalytic properties for oxygen reduction reaction: After washing and drying chrysanthemums, weigh 1 g of chrysanthemums and 30 mL of distilled water into 50 mL of polytetrafluoroethylene In the reaction kettle of the gallbladder, react at 180°C for 24 h, cool to room temperature after the reaction, centrifuge the obtained brown-black product, and collect the solution part to be carbon quantum dots with fluorescent properties. The collected black solid is used Repeated washing with ethanol and deionized water, mixed with 3g zinc chloride at room temperature for activation treatment, then placed in a tube furnace, reacted at 800°C for 4h, then repeatedly washed with hydrochloric acid and deionized water, and then placed Dry it in a vacuum oven at 90° C. to obtain a nitrogen-doped carbon material with catalytic activity.

[0023] Test the application of N-doped carb...

Embodiment 3

[0029] After washing and drying the chrysanthemum, weigh 1 g of chrysanthemum and 30 mL of distilled water into a 50 mL reaction kettle with a polytetrafluoroethylene liner, react at 180 °C for 24 h, cool to room temperature after the reaction, and prepare the obtained The brown-black product is centrifuged, and the collected solution part is carbon quantum dots with fluorescent properties. The collected black solid is washed repeatedly with ethanol and deionized water, and is mixed with 2g zinc chloride at room temperature for activation treatment, and then placed in In a tube furnace, it was reacted at 900 °C for 4 h, then washed repeatedly with hydrochloric acid and deionized water, and then dried in a vacuum oven at 90 °C to obtain a catalytically active nitrogen-doped carbon material.

[0030] Test the application of N-doped carbon materials as catalysts in oxygen reduction reaction: uniformly disperse the prepared nitrogen-doped carbon materials into the mixed solution of...

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Abstract

The invention provides a carbon material with a catalytic performance on ORR (Oxygen Reduction Reaction) as well as a preparation method and application of the carbon material. The preparation method comprises the following steps: washing chrysanthemum flowers and drying; weighing the chrysanthemum flowers and distilled water and adding into a reaction kettle provided with a polytetrafluoroethylene liner; reacting at 150DEG C to 220 DEG C for 16h to 48h; after reacting, cooling to room temperature and carrying out solid-liquid separation on an obtained brownish black product; carrying out activation treatment on a collected black solid with zinc chloride at the room temperature; then putting the black solid into a tubular furnace and carbonizing at 700 DEG C to 900 DEG under an inert atmosphere for 1h to 4h; washing and drying to obtain the carbon-doped carbon material with the catalytic performance on the ORR. The carbon material provided by the invention has the excellent catalytic performance on the ORR and excellent lasting stability; a preparation process is simple, raw materials re easy to obtain and the cost is low.

Description

technical field [0001] The invention belongs to the fields of carbon nanometer material preparation and fuel cells, and in particular relates to a method for preparing a carbon material with excellent catalytic performance for oxygen reduction reaction by one-step reaction. Background technique [0002] A fuel cell is a device that directly converts the chemical energy of fuel into electrical energy. The products of its chemical reaction are mainly water and carbon dioxide. The process does not go through the combustion step, and its energy conversion is not limited by the Carnot cycle. Therefore, the energy conversion of fuel The efficiency is relatively high. With the development of society, the demand for energy is increasing. As a new technology that uses energy efficiently and is environmentally friendly, fuel cells enjoy the reputation of "Energy Star in the 21st Century" and are considered to be efficient, high-energy, and pollution-free power supply devices that can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/96B82Y30/00
CPCB82Y30/00H01M4/9091H01M4/96Y02E60/50
Inventor 黄坤许利娜丁海阳李守海李梅夏建陵杨小华张燕
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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