Preparation method of P-doped CuMnCoO4/N-CNs composite material

A technology of composite materials and shrimp shells, which is applied in the field of electrocatalysis, can solve the problems of catalytic reduction reaction kinetics hysteresis, unfavorable large-scale production, and high cost, and achieve excellent electrocatalytic performance, suitable for large-scale production, and low cost.

Inactive Publication Date: 2021-02-26
ZHEJIANG NIRUAN NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the hysteresis of catalyst catalytic reduction reaction kinetics caused by oxygen adsorption on the electrode surface, O-O bond activation / breaking and oxidation removal, etc., the development of ORR electrochemical catalysis technology has been limited, which requires us to study some high-electrode catalysts. Catalytically active catalysts to increase the rate of the oxygen reduction reaction
[0004] At present, the main ORR catalysts on the market are Pt-based catalysts, but Pt is a noble metal, and its high cost is not conducive to large-scale production. Therefore, the development of a non-noble metal ORR catalyst is a current research hotspot.

Method used

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  • Preparation method of P-doped CuMnCoO4/N-CNs composite material
  • Preparation method of P-doped CuMnCoO4/N-CNs composite material
  • Preparation method of P-doped CuMnCoO4/N-CNs composite material

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Effect test

Embodiment 1

[0023] A P-doped CuMnCoO 4 / N-CNs composite material, specifically including the following preparation steps:

[0024] (1) Dry the shrimp shell at 80°C for 5 hours, then grind it into shrimp shell powder, weigh 1g of the ground shrimp shell powder, put it in the inner tank of the reaction kettle, then add 100ml of deionized water to it and stir evenly , put the reaction kettle in an oven, and heat it with water at 180°C for 15 hours. After the reaction, after cooling to room temperature, the obtained N-CNs solution was filtered with 0.45pm and 0.22pm microporous membranes in order to remove large Shrimp shell residues of large size are centrifuged at 14,000rpm to further separate large particles, and finally a yellow solution of N-CNs solution is obtained;

[0025] (2) Weigh 0.4mmol copper acetate, 0.4mmol cobalt acetate, and 0.4mmol manganese acetate respectively and put them into three test tubes respectively, add 5ml deionized water respectively, and ultrasonically dissolv...

Embodiment 2

[0030] A P-doped CuMnCoO 4 / N-CNs composite material, specifically including the following preparation steps:

[0031] (1) Dry the shrimp shell at 80°C for 5 hours, then grind it into shrimp shell powder, weigh 1g of the ground shrimp shell powder, put it in the inner tank of the reaction kettle, add 150ml of deionized water to it and stir evenly , put the reaction kettle in an oven, and heat it with water at 200°C for 20 hours. After the reaction, after cooling to room temperature, the obtained N-CNs solution was filtered with 0.45pm and 0.22pm microporous membranes to remove large Shrimp shell residues of large size are centrifuged at 14,000rpm to further separate large particles, and finally a yellow solution of N-CNs solution is obtained;

[0032] (2) Weigh 0.4mmol copper acetate, 0.4mmol cobalt acetate, and 0.4mmol manganese acetate respectively and put them into three test tubes respectively, add 5ml deionized water respectively, and ultrasonically dissolve them fully f...

Embodiment 3

[0035] A P-doped CuMnCoO 4 / N-CNs composite material, specifically including the following preparation steps:

[0036] (1) Dry the shrimp shell at 80°C for 5 hours, then grind it into shrimp shell powder, weigh 1g of the ground shrimp shell powder, put it in the inner tank of the reaction kettle, then add 120ml of deionized water to it and stir well , put the reaction kettle in an oven, and heat it with water at 150°C for 10 hours. After the reaction, after cooling to room temperature, the obtained N-CNs solution was filtered with 0.45pm and 0.22pm microporous membranes to remove large Shrimp shell residues of large size are centrifuged at 14,000rpm to further separate large particles, and finally a yellow solution of N-CNs solution is obtained;

[0037] (2) Weigh 0.4mmol copper acetate, 0.4mmol cobalt acetate, and 0.4mmol manganese acetate respectively and put them into three test tubes respectively, add 5ml deionized water respectively, and ultrasonically dissolve them full...

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Abstract

The invention discloses a preparation method of a P-doped CuMnCoO4 / N-CNs composite material, which comprises the following steps: drying shrimp shells, grinding, carrying out hydrothermal treatment toobtain nitrogen-doped carbon quantum dots (N-CNs), dissolving Cu salt, Mn salt and Co salt in deionized water, adding N-CNs and ammonium dihydrogen phosphate, carrying out hydrothermal treatment, andcalcining to obtain the P-doped CuMnCoO4 / N-CNs composite material. The prepared P-doped CuMnCoO4 / NCNs composite material is applied to an electrocatalytic oxygen reduction reaction.

Description

technical field [0001] The invention relates to the field of electrocatalysis, in particular to a method for preparing a P-doped CuMnCoO4 / N-CNs composite material. Background technique [0002] In the context of economic globalization, the increasing energy shortage and environmental pollution caused by the consumption of fossil fuels have become a huge obstacle to the harmonious development of human beings and nature. On the basis of meeting the increasing demand of human beings for energy and products, reduce the consumption of CO 2 With the emission of pollutants, it is critical to develop sustainable, fossil-free pathways to produce globally important fuels and chemicals. To this end, human beings must change the traditional fossil energy utilization and conversion system and establish a new clean energy conversion system. [0003] Fuel cells are a kind of clean energy, which can meet the urgent needs of clean power energy use. In fuel cells, the oxygen reduction reac...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/8825H01M4/9016H01M4/9083Y02E60/50
Inventor 陈秋梅
Owner ZHEJIANG NIRUAN NEW MATERIAL CO LTD
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