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Preparation method and application of carbon-based catalyst with high-breathability porous structure

A carbon-based catalyst and initiator technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of large-scale development and application in the battery field, high cost, expression, etc., and achieve excellent oxygen reduction and oxygen evolution performance, The effect of high breathability and high breathability

Pending Publication Date: 2022-05-17
佛山仙湖实验室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, noble metal electrocatalysts have disadvantages such as single electrocatalytic activity, high cost, natural scarcity and poor stability, which affect their large-scale development and application in the battery field.
Although Me(Me=Fe, Co, Ni, Cu)-N-C inorganic non-noble metal carbon-based catalysts have certain electrocatalytic activity, their catalytic activity is closely related to the pore structure distribution of porous carbon materials. Catalysts, whose pore structure distribution still cannot better satisfy the expression of catalyst catalytic activity

Method used

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  • Preparation method and application of carbon-based catalyst with high-breathability porous structure
  • Preparation method and application of carbon-based catalyst with high-breathability porous structure
  • Preparation method and application of carbon-based catalyst with high-breathability porous structure

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing a carbon-based catalyst, comprising the following steps:

[0040] Weigh 0.8755 g of zinc nitrate hexahydrate, 0.0174 g of nickel nitrate hexahydrate and 0.04 g of ferricyanide phthalocyanide into a 100 mL beaker, add 40 mL of anhydrous methanol, and perform ultrasonic stirring to obtain solution A;

[0041] Weigh 2.8 g of 1-vinylimidazole into a 50 mL round-bottomed flask, add 0.056 g of azobisisobutyronitrile, and stir and polymerize in a water bath at 65°C for 20 minutes under a nitrogen atmosphere to obtain solution B;

[0042] Slowly add solution B dropwise to solution A with continuous magnetic stirring, and after stirring at room temperature for 5 minutes, transfer the mixed solution to a 100mL reactor, and perform hydrothermal treatment at 90°C for 24 hours; then centrifuge and wash with absolute ethanol for 8 After that, place it in a vacuum oven at 60°C and dry for 12 hours to obtain the reaction product;

[0043] Place the prepared reac...

Embodiment 2

[0045] A method for preparing a carbon-based catalyst, comprising the following steps:

[0046] Weigh 0.3687 g of zinc carbonate, 0.0071 g of nickel carbonate and 0.02 g of ferrocyanide into a 100 mL beaker, add 40 mL of anhydrous methanol, and perform ultrasonic stirring to obtain solution A;

[0047]Weigh 2.8 g of 1-vinylimidazole into a 50 mL round bottom flask, add 0.056 g of azobisisobutyronitrile, and polymerize with stirring in a water bath at 55°C for 10 minutes under a nitrogen atmosphere to obtain solution B;

[0048] Slowly add solution B dropwise to solution A with continuous magnetic stirring, and after stirring at room temperature for 15 minutes, transfer the mixed solution to a 100mL reactor, and perform hydrothermal treatment at 70°C for 18 hours; then centrifuge and wash with absolute ethanol for 8 After that, place it in a vacuum oven at 60°C and dry it for 18 hours to obtain the reaction product;

[0049] Place the prepared reaction product in a high-temper...

Embodiment 3

[0051] A method for preparing a carbon-based catalyst, comprising the following steps:

[0052] Weigh 0.5408 g of zinc acetate, 0.0106 g of nickel carbonate and 0.06 g of ferrocyanide into a 100 mL beaker, add 40 mL of anhydrous methanol, and perform ultrasonic stirring to obtain solution A;

[0053] Weigh 2.8 g of 1-vinylimidazole into a 50 mL round bottom flask, add 0.056 g of azobisisobutyronitrile, and polymerize with stirring in a water bath at 70°C for 30 minutes under a nitrogen atmosphere to obtain solution B;

[0054] Slowly add solution B dropwise to solution A with continuous magnetic stirring, and after stirring at room temperature for 30 minutes, transfer the mixed solution to a 100mL reactor, and perform hydrothermal treatment at 110°C for 30 hours; then use absolute ethanol to centrifuge and wash for 8 After that, place it in a vacuum oven at 60°C and dry for 24 hours to obtain the reaction product;

[0055] Place the prepared reaction product in a high-tempera...

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Abstract

The invention belongs to the technical field of new energy materials, and particularly discloses a preparation method of a high-breathability porous-structure carbon-based catalyst, which comprises the following steps: dissolving zinc salt, nickel salt and phthalocyanine iron in a solvent, and dispersing to obtain a solution A; dissolving an initiator in 1-vinyl imidazole, and heating and polymerizing under the protection atmosphere of inert gas to obtain a solution B; mixing the solution A and the solution B, performing hydrothermal treatment, washing and drying to obtain a reaction product; and carbonizing the reaction product to obtain the carbon-based catalyst. A polyvinyl imidazole-Zn series precursor is adopted as a carbon source and a nitrogen source, and iron phthalocyanine is added, so that a large number of micropores, mesopores and macropores are generated in the high-temperature carbonization process of the material, the prepared catalyst has a hierarchical porous structure, and the specific surface area can reach 985-1240m < 2 > / g; the half-wave potential of oxygen reduction reaches 0.82 to 0.88 V, and the overpotential of oxygen evolution of 10mA / cm < 2 > reaches 1.57 to 1.76 V.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, in particular to the technical field of catalysts, in particular to a preparation method and application of a carbon-based catalyst with a highly air-permeable porous structure. Background technique [0002] The combustion of traditional fossil energy has brought serious pollution to our living environment. At the same time, it is precisely because of the excessive use of fossil energy that the energy crisis has been caused. Human society is facing unprecedented energy and environmental challenges. To seek sustainable development, it is necessary to develop a new clean energy system, such as wind energy, water energy, solar energy and other primary energy sources, but the power generation of this energy is greatly affected by the climate, and the power is discontinuous, unstable, and the grid connection rate is low , so it is necessary to develop supporting large-scale energy storage...

Claims

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Application Information

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IPC IPC(8): H01M4/90
CPCH01M4/9083H01M4/90H01M4/9008
Inventor 张锐明吴佳为孟子寒吴焯峰刘若璐张海宁
Owner 佛山仙湖实验室
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