A kind of iron-nitrogen doped oxygen reduction carbon catalyst with ordered hierarchical pores and preparation method thereof

A carbon catalyst and nitrogen-doped technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low catalytic performance, high cost, difficult large-scale promotion, and poor stability of catalysts. Achieve the effects of promoting electron transfer and mass transfer, efficient oxygen reduction reaction catalytic performance, and good stability

Active Publication Date: 2021-02-19
宁波华储能源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The synthesis method is simple and the cost of raw materials is low, which solves the problems of low catalytic performance, poor stability and high cost of metal-air battery catalysts that are difficult to promote on a large scale

Method used

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  • A kind of iron-nitrogen doped oxygen reduction carbon catalyst with ordered hierarchical pores and preparation method thereof
  • A kind of iron-nitrogen doped oxygen reduction carbon catalyst with ordered hierarchical pores and preparation method thereof
  • A kind of iron-nitrogen doped oxygen reduction carbon catalyst with ordered hierarchical pores and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1): In a three-necked flask, add 80ml of water and heat to 75°C, then add 7.0g of styrene under vigorous stirring, and in another 10ml centrifuge tube, mix 0.024g of NaOH and 0.024g of NaOH 2 CO 3 Soluble in 5mL water and contain 0.03gK 2 S 2 o 8 Add 5ml of aqueous solution to the previous solution, pass nitrogen gas under the liquid surface for 10 minutes, and keep the temperature at 75°C for 12 hours to synthesize 300nm monodisperse polystyrene spheres. After the reaction is completed, return to room temperature and perform suction filtration to form a filter cake .

[0034] Step 2): 8.15g (0.0274mol) of Zn(NO 3 ) 2 ·6H 2 O, 6.75g (0.0822mol) of 2-methylimidazole and 0.045g (0.000274mol) FeCl 3 ·6H 2O was dissolved in 45ml of methanol solution. Then a piece of monolithic PS template was immersed in the above solution for 1 h, and further treated with vacuum degassing for 10 min, so that all the interstitial spaces between the 3D colloidal spheres were fi...

Embodiment 2

[0036] Step 1): In a three-necked flask, add 80ml of water and heat to 75°C, then add 7.0g of styrene under vigorous stirring, and in another 10ml centrifuge tube, mix 0.024g of NaOH and 0.024g of NaOH 2 CO 3 Soluble in 5mL water and contain 0.03gK 2 S 2 o 8 Add 5ml of aqueous solution to the previous solution, pass nitrogen gas under the liquid surface for 10 minutes, and keep the temperature at 75°C for 12 hours to synthesize 300nm monodisperse polystyrene spheres. After the reaction is completed, return to room temperature and perform suction filtration to form a filter cake .

[0037] Step 2): 8.15g (0.0274mol) of Zn(NO 3 ) 2 ·6H 2 O, 6.75g (0.0822mol) of 2-methylimidazole and 0.067g (0.000411mol) of FeCl 3 ·6H 2 O was dissolved in 45 mL of methanol solution. Then a piece of monolithic PS template was immersed in the above solution for 1 h, and further treated with vacuum degassing for 10 min, so that all the interstitial spaces between the 3D colloidal spheres we...

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Abstract

An iron-nitrogen doped oxygen reduction carbon catalyst with ordered hierarchical pores and a preparation method thereof belong to the technical field of catalysts. Iron-doped metal-organic frameworks with three-dimensionally ordered hierarchical pores formed by 3D framework templates, and then high-temperature calcination and pyrolysis methods to obtain iron-nitrogen-doped carbon catalysts with hierarchical pores with oxygen reduction catalytic properties, in metal-air Batteries, renewable fuel cells and other fields have broad application prospects.

Description

technical field [0001] The invention relates to a preparation method of an iron-nitrogen doped oxygen reduction carbon catalyst with graded pores, has broad application prospects in the fields of metal-air batteries, renewable fuel batteries and the like, and belongs to the technical field of catalysts. Background technique [0002] In view of the serious shortage of traditional oil resources and the environmental pollution caused by it has become increasingly prominent, the development of new clean energy has become a national strategic demand. As a representative clean energy conversion device, the fuel cell known for its zero pollution and high energy conversion rate has been extensively studied all over the world. It can directly convert externally supplied fuel and oxidant into electrical energy through electrochemical reaction without direct combustion, so it is not limited by the Carnot cycle, the energy conversion efficiency can be achieved, and almost no nitrogen-co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10
CPCB01J27/24B01J35/1004
Inventor 向中华宁梦瑶
Owner 宁波华储能源有限责任公司
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