Preparation method of nitrogen-doped porous carbon microsphere coated Ni/Co alloy

A nitrogen-doped porous carbon and microsphere technology, applied in the field of alloys, can solve problems such as hindering the large-scale use of precious metal catalysts, scarce platinum-based precious metal reserves, and few active sites, etc., and achieving a multi-level porous structure is beneficial, low in price, and low in cost. The effect of short response times

Inactive Publication Date: 2022-07-05
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most nitrogen-doped catalysts cannot compete with Pt-based catalysts due to the limited specific surface area, which results in fewer exposed active sites.
To date, the most efficient commercially available oxygen reduction catalysts are platinum-noble metal-based catalysis, however, the scarcity and high cost of platinum-based noble metals have seriously hindered the large-scale use of noble metal catalysts.

Method used

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  • Preparation method of nitrogen-doped porous carbon microsphere coated Ni/Co alloy
  • Preparation method of nitrogen-doped porous carbon microsphere coated Ni/Co alloy
  • Preparation method of nitrogen-doped porous carbon microsphere coated Ni/Co alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1.5 g of pectin, 2.5 g of melamine, 0.582 g of cobalt nitrate, and 0.582 g of nickel nitrate were added to 40 ml of deionized water, heated to 120 °C at a heating rate of 3 °C / min, and hydrothermally heated at a constant temperature for 12 h to obtain a brown intermediate product; Then, under nitrogen atmosphere, the intermediate product was heated to 900 °C at a heating rate of 8 °C / min, and carbonized at constant temperature for 12 h to obtain nitrogen-doped porous carbon microspheres coated Ni / Co alloy, named CN Ni,Co catalyst.

Embodiment 2

[0040] 1.5 g of pectin, 2.5 g of melamine, 0.582 g of cobalt nitrate, and 0.582 g of nickel nitrate were added to 40 ml of deionized water, heated to 100 °C at a heating rate of 5 °C / min, and heated at a constant temperature for 14 h to obtain a brown intermediate product; Then, in a nitrogen atmosphere, the intermediate product was heated to 900°C at a heating rate of 5°C / min, and carbonized at a constant temperature for 12 h to obtain a Ni / Co alloy coated with nitrogen-doped porous carbon microspheres.

Embodiment 3

[0042]1.5 g of pectin, 2.5 g of melamine, 0.582 g of cobalt nitrate, and 0.582 g of nickel nitrate were added to 40 ml of deionized water, heated to 180 °C at a heating rate of 2 °C / min, and hydrothermally heated at a constant temperature for 10 h to obtain a brown intermediate product; Then, under nitrogen atmosphere, the intermediate product was heated to 900 °C at a heating rate of 10 °C / min, and carbonized at constant temperature for 12 h to obtain nitrogen-doped porous carbon microspheres coated Ni / Co alloy.

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Abstract

The invention relates to a preparation method of a nitrogen-doped porous carbon microsphere coated Ni/Co alloy, which comprises the following steps: adding pectin, melamine, cobalt nitrate and nickel nitrate into deionized water, and carrying out hydrothermal reaction to obtain an intermediate product; and carbonizing the intermediate product in a nitrogen atmosphere to obtain the nitrogen-doped porous carbon microsphere coated Ni/Co alloy. The nitrogen-doped porous carbon microsphere coated Ni/Co alloy is prepared through a simple hydrothermal method. The preparation method has the advantages of few reaction steps, low consumption of chemical reagents, simplicity in operation, short reaction period, wide sources of raw materials, simplicity, easiness in obtaining, energy conservation, environment friendliness and cost saving.

Description

technical field [0001] The invention relates to a preparation method of Ni / Co alloy coated with nitrogen-doped porous carbon microspheres, and belongs to the field of alloys. Background technique [0002] In terms of green energy, the research of catalytic chemistry provides various catalytic reaction paths for the efficient conversion and utilization of hydrogen energy, and provides an effective technical route for the chemical storage and release of hydrogen energy and the conversion and utilization of biomass raw materials. Porous carbon materials have been widely used in catalyst carriers, electrocatalysis, supercapacitors and other fields due to their high electrical conductivity, acid and alkali resistance, large specific surface area, and tunable pore structure. However, a single carbon material renders electrochemically inert and poor catalytic activity. Heteroatom-doped carbon materials can improve the activity of carbon materials, mainly because the introduction o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/16B22F1/145B22F9/24
CPCB22F9/24
Inventor 许跃龙任斌王莎莎翟作昭张利辉刘振法
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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