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Preparation method and application of a cobalt-iron bimetallic organic framework derived carbon material

An organic framework and bimetal technology, which is applied in the field of preparation of bimetallic organic framework derived carbon materials, can solve the problems of poor electrical conductivity of metal organic framework derived carbon materials, difficulty in controlling the morphology of bimetallic MOF, and poor material performance of the preparation method. , to achieve excellent methanol oxidation activity, good cycle stability, and reduce uncontrollable growth and agglomeration

Active Publication Date: 2022-05-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems related to the deficiencies of the preparation method and poor material properties under the existing conditions, such as: the morphology of bimetallic MOF is difficult to control, the electrical conductivity of metal-organic framework derived carbon materials is poor, and the metal carbide particles are large , poor dispersion of metal particles in metal materials, etc.; what the invention provides is a cobalt-iron bimetallic organic framework derived carbon material (CoFe-Fe 5 C 2 Preparation method and application of @NC / CNTs) composite electrode materials

Method used

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  • Preparation method and application of a cobalt-iron bimetallic organic framework derived carbon material
  • Preparation method and application of a cobalt-iron bimetallic organic framework derived carbon material
  • Preparation method and application of a cobalt-iron bimetallic organic framework derived carbon material

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Experimental program
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Effect test

Embodiment 1

[0040] (1) Add 1.455g of cobalt nitrate hexahydrate and 0.209g of ferrous sulfate heptahydrate to a container filled with N 2 Bubble 20

[0041] After 1 min, in a three-necked flask of 100mL methanol solution, the solution was sealed, and magnetically stirred to obtain solution A after the solid was completely dissolved;

[0042] (2) Take 12.016g of dimethylimidazole solid and add it to a beaker containing 100ml of methanol, and stir it magnetically. After the solution is completely dissolved, pour nitrogen into the solution A in (1) after bubbling for 20 minutes, and continue Stir for 1h to obtain solution B;

[0043] (3) The solution B was left standing at room temperature for 18 hours, filtered, washed with distilled water and methanol, and dried in a vacuum oven at 70°C for 24 hours to obtain solid C;

[0044] (4) After the solid C is ground evenly, it is placed in a tube furnace and calcined in ascending order; the first-stage holding temperature is 300°C, the heating r...

Embodiment 2

[0049] (1) 1.455g cobalt nitrate hexahydrate and 0.139g ferrous sulfate heptahydrate are added to a container filled with N2 bubbling for 20

[0050] After 1 min, in a three-necked flask of 100mL methanol solution, the solution was sealed, and magnetically stirred to obtain solution A after the solid was completely dissolved;

[0051] (2) Add 12.016g of dimethylimidazole solid into a beaker containing 150ml of methanol. Magnetic stirring, after the solution is completely dissolved, pour nitrogen into solution A in (1) after bubbling for 20 minutes, and continue stirring for 1 hour to obtain solution B;

[0052] (3) The solution B was left standing at room temperature for 18 hours, filtered, washed with distilled water and methanol, and dried in a vacuum oven at 70°C for 24 hours to obtain solid C;

[0053] (4) Grinding the solid C evenly and placing it in a tube furnace for calcining with increasing temperature. In the first stage, the holding temperature is 300°C, the heati...

Embodiment 3

[0060] (1) Add 1.455g of cobalt nitrate hexahydrate and 0.209g of ferrous sulfate heptahydrate to a container filled with N 2 Bubble 20

[0061] In the three-neck flask of 200mL methanol solution after 1 min, the solution was sealed, and magnetically stirred to obtain solution A after the solid was completely dissolved;

[0062] (2) Take 14.420 g of solid dimethylimidazole and add it to a beaker containing 100 ml of methanol. Magnetic stirring, after the solution is completely dissolved, pour nitrogen into solution A in step (1) after bubbling for 20 minutes, and continue stirring for 1 hour to obtain solution B;

[0063] (3) The solution B was left standing at room temperature for 18 hours, filtered, washed with distilled water and methanol, and dried in a vacuum oven at 70°C for 24 hours to obtain solid C;

[0064] (4) Grinding the solid C evenly and placing it in a tube furnace for calcining with increasing temperature. In the first stage, the holding temperature is 300°...

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Abstract

The invention belongs to the technical field of catalytic materials, and relates to a preparation method and application of a bimetallic organic framework derived carbon material; 2 After bubbling, add cobalt nitrate hexahydrate and ferrous sulfate heptahydrate, and stir to obtain solution A; add dimethylimidazole to methanol or ethanol solution, and 2 After bubbling, add to solution A, stir to obtain mixture B, and obtain solid precipitate C after standing, filtering, washing, and drying; after grinding, calcining under nitrogen protection conditions, the obtained powder is washed, dried, and ground to obtain The black powder D is calcined together with dicyandiamide powder under the condition of nitrogen protection. The two are not in contact. After calcination, it is pickled, washed with water, washed with alcohol, and ground to obtain a composite electrode material. It has excellent performance and cycle stability. ; It not only solves the problem of poor conductivity of the metal-framed derived carbon material, but also reduces the occurrence of carbon nanotube agglomeration.

Description

technical field [0001] The invention belongs to the technical field of fuel cell MOR catalytic materials, and in particular relates to a preparation method and application of a bimetallic organic framework derived carbon material. [0002] technical background [0003] In the context of severe environmental pollution and energy shortages all over the world, eco-friendly energy has become a hot topic at present. In order to reduce pollution and replace traditional energy with sustainable energy, the efficient energy utilization of fuel cells has gradually been valued by various countries. Among them, methanol fuel cells have attracted widespread attention due to their low cost, simple structure, and high energy conversion rate. Moreover, compared with other fuels, methanol is cheap and easy to obtain, convenient to transport, and has higher energy density. At present, the key factors restricting the further industrialization of methanol fuel cells are the high cost of electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M8/1011C01B32/05C01B32/168C01B32/16C01B32/914
CPCH01M4/88H01M4/90H01M4/9041H01M4/9083H01M8/1011C01B32/05C01B32/168C01B32/16C01B32/914Y02E60/50
Inventor 章明美宋子祥王卓楷汪安黄枝业周伟通
Owner JIANGSU UNIV
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