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Preparation method and application of FeSb/NC electrocatalyst

An electrocatalyst, fe2.55sb2 technology, applied in physical/chemical process catalysts, chemical instruments and methods, circuits, etc., can solve the problem of poor ORR performance, and achieve good stability and excellent ORR performance

Pending Publication Date: 2021-08-10
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ORR performance of this type of system is still not as good as that of commercial Pt / C

Method used

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  • Preparation method and application of FeSb/NC electrocatalyst
  • Preparation method and application of FeSb/NC electrocatalyst
  • Preparation method and application of FeSb/NC electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take a beaker first, add ethanol in order at room temperature (C 2 Hide 5 OH) 10 ml, nine water in iron (FE (NO 3 ) 3 ∙ 9h 2 O) 200 mg, trichloride (SBCL 3 100 mg, dicyandiamide (C 2 Hide 4 N 4 2 g and Philippine (C 12 Hide 8 N 2 0.2 g, stir after 30 min, ultrasonic 5 min. Subsequently, the beaker was stirred at 80 ° C to dry, and the obtained powder was well grinded in the mortar, and then placed in the center of the tube furnace, heating 5 ° C / min at a high purity AR atmosphere to 900 ° C, high temperature heat Solution 2 h Get a new FeSB / NC electrocatalyst, labeled FESB / NC-1.

[0022] figure 1 In this example, the FESB / NC-1 is an XRD spectrum of the catalyst, in the figure, located in 26 o The wider derived peak of the left and right is the (002) peak of graphitized carbon, from the high temperature carbonization of the precursor of the dicyandide. Cali-diffraction peak and Fe of other angles 2.55 SB 2 The standard card (PDF # 54-0502) corresponds to one or one,...

Embodiment 2

[0024] Take a beaker first, add ethanol in order at room temperature (C 2 Hide 5 OH) 10 ml, nine water in iron (FE (NO 3 ) 3 ∙ 9h 2 O) 200 mg, trichloride (SBCL 3 100 mg, dicyandiamide (C 2 Hide 4 N 4 2 g and Philippine (C 12 Hide 8 N 2 0.3 g, after stirring for 30 min, ultrasound 5 min. Subsequently, ethanol in the beaker was stirred at 80 ° C to dry, and the obtained powder was well grounded in the mortar, and placed in the center of the tube furnace, 5 ° C / min at a high pure Ar atmosphere to 900 ° C, high temperature heat The solution 2 h gave a new FeSB / NC electrocatalyst, labeled FESB / NC-2.

[0025] figure 1 In this example, the FESB / NC-2 is the XRD spectrum of the catalyst. As in Example 1, located in 26 o The wider derived peak is the (002) peak of the graphitized carbon produced by the high temperature carbonization of the dicyandide precursor. Cali-diffraction peak and Fe of other angles 2.55 SB 2 The standard card (PDF # 54-0502) corresponds to one or one, prove...

Embodiment 3

[0027] Take a beaker first, add ethanol in order at room temperature (C 2 Hide 5 OH) 10 ml, nine water in iron (FE (NO 3 ) 3 ∙ 9h 2 O) 100 mg, trichloride (SBCL 3 100 mg, dicyandiamide (C 2 Hide 4 N 4 2 g and Philippine (C 12 Hide 8 N 2 0.2 g, stir after 30 min, ultrasonic 5 min. Subsequently, ethanol in the beaker was stirred at 80 ° C to dry, and the obtained powder was well grounded in the mortar, and placed in the center of the tube furnace, 5 ° C / min at a high pure Ar atmosphere to 900 ° C, high temperature heat Solution 2 h Get a new FeSB / NC electrocatalyst, labeled FESB / NC-3.

[0028] figure 1 In this example, the FESB / NC-3 is the XRD spectrum of the catalyst, which is the same as in Examples 1, 2, located in 26. o The wider derived peak of the left and right corresponds to the (002) peak of the graphitated carbon, from the high temperature carbonization of the prodium of the dicyanide, the sharp diffraction peak and Fe of other angles 2.55 SB 2 The standard card (...

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Abstract

The invention provides a preparation method and application of a FeSb / NC electrocatalyst. The preparation method comprises the following steps: by taking ethanol as a solvent, sequentially adding iron nitrate nonahydrate, antimony trichloride, dicyandiamide and phenanthroline, stirring until uniform dispersion, and then carrying out ultrasonic treatment; heating, stirring and evaporating the ethanol in the beaker to dryness, uniformly grinding the obtained powder in a mortar, placing the powder in the center of a tubular furnace, and performing high-temperature pyrolysis in an inert atmosphere to obtain the novel FeSb / NC electrocatalyst. The catalyst has the advantages of excellent ORR catalytic activity, stability and the like.

Description

Technical field [0001] The present invention relates to a type of highly active, low-cost oxygen-reducing electrocatalyst, and more particularly to a novel FESB / NC electrocatalyst preparation method and an oxygen reduction performance, which belongs to an oxygen reduction application. Background technique [0002] Serious energy crisis and environmental problems forced us to explore various sustainable energy conversion devices (such as fuel cells, metal-air batteries, etc.), where energy density is high, low cost, and safe and reliable zinc-air batteries are expected to be energy conversion. Widely used in the field of storage. The oxygen reduction (ORR) electrocatalyst has a decisive effect on the performance of zinc-air batteries, so there is a need to develop low cost and highly active ORR electrocatalysts. At present, with noble metal (PT), ruthenium (IR), ruthenium (Ru)) and its oxide-based commercial catalyst, due to high cost, limited resources, and stability, it hinder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/00H01M4/90
CPCB01J27/24H01M4/9083H01M4/9041B01J35/33Y02E60/50
Inventor 孙盼盼谢幸龚涛张丹孙小华黄妞
Owner CHINA THREE GORGES UNIV
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