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Preparation method of Fe and N co-doped hierarchical porous carbon material with ultrahigh specific surface area

A technology with ultra-high specific surface area and hierarchical porosity, applied in the preparation/purification of carbon, etc., can solve the problems of complex process and low yield, achieve the effect of increasing specific surface area, reducing cost, and avoiding cumbersome procedures

Pending Publication Date: 2019-12-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of complex process and low yield in the existing element co-doped carbon material preparation technology, and to provide a preparation method of Fe, N element co-doped ultra-high specific surface integral graded porous carbon material

Method used

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  • Preparation method of Fe and N co-doped hierarchical porous carbon material with ultrahigh specific surface area
  • Preparation method of Fe and N co-doped hierarchical porous carbon material with ultrahigh specific surface area
  • Preparation method of Fe and N co-doped hierarchical porous carbon material with ultrahigh specific surface area

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Embodiment 1

[0025] A preparation method of Fe, N element co-doped ultra-high specific surface area graded porous carbon material, such as figure 1 As shown, it specifically includes the following processes:

[0026] Step 101: using ferric ammonium citrate as the raw material of the carbon material, and using an agate mortar and pestle as grinding tools.

[0027] Specifically, the purity of ferric ammonium citrate is analytical grade (AR).

[0028] Specifically, the ferric ammonium citrate is fully ground and pulverized with an agate mortar and pestle, so that it is uniformly dispersed, and then heated evenly in the subsequent heat treatment process.

[0029] Step 102: using a tube furnace as an annealing device, and using hydrochloric acid (HCl) as a reaction solvent.

[0030] Specifically, the ferric ammonium citrate powder is annealed, and the tube furnace used for annealing should be a high-temperature furnace, and the atmosphere for annealing should be an inert gas with a purity of ...

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Abstract

The invention discloses a preparation method of a Fe and N element co-doped hierarchical porous carbon material with an ultrahigh specific surface area. The preparation method specifically comprises the following steps: grinding a raw material ammonium ferric citrate to form a powder, annealing the powder, and then sequentially carrying out acidification treatment, suction filtration and vacuum drying on the obtained annealed sample in order to obtain the Fe and N element co-doped hierarchical porous carbon material with the ultrahigh specific surface area. The problems of complex process andlow yield in existing preparation technologies of element co-doped carbon materials are solved, and the Fe and N element co-doped hierarchical porous carbon material with the ultrahigh specific surface area is provided.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a method for preparing Fe and N element co-doped superhigh specific surface area graded porous carbon materials. Background technique [0002] Porous materials are materials that form a network structure of interpenetrating or closed pores, and the boundaries or surfaces of the pores are composed of pillars or plates. Hierarchical Porous Materials refer to materials composed of two or more different types of pore structures. The main pore structure types are: micropores, mesopores, and macropores. Specific Surface Area refers to the total area of ​​material per unit mass, in m 2 / g. Fe, N co-doped carbon (Fe, N Co-doped Carbon) refers to a class of carbon materials co-doped with iron and nitrogen. Fe and N element co-doped ultra-high specific surface integral graded porous carbon materials have the advantages of high specific surface area, high porosit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01B32/05
Inventor 梁彦瑜曹贵强唐泽明来庆学
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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