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Metal phosphide and heteroatom doped porous carbon composite material as well as preparation and application thereof

A metal phosphide and composite material technology, applied in the direction of carbon compounds, non-metallic elements, chemical instruments and methods, etc., can solve the problems of harsh conditions, high raw material costs, complicated process, etc., achieve good performance, simple preparation method, and relatively The effect of large surface area

Inactive Publication Date: 2020-07-21
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods have disadvantages such as high cost of raw materials, harsh conditions, and complicated processes. Therefore, it is necessary to explore a simpler and sustainable method to prepare transition metal phosphide / heteroatom-doped porous composites with cheaper raw materials.

Method used

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  • Metal phosphide and heteroatom doped porous carbon composite material as well as preparation and application thereof
  • Metal phosphide and heteroatom doped porous carbon composite material as well as preparation and application thereof
  • Metal phosphide and heteroatom doped porous carbon composite material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put 6.00g phytic acid into a 100mL flat-bottomed glass cup, add 1mmol copper acetate, 20mL ultrapure water, stir on a magnetic stirrer for 2min, then add 2.0g chitin, stir for 12h and mix well, then freeze in a freeze dryer After drying for 1 day, a fluffy, sticky, light blue block solid was obtained. Put the obtained solid into a quartz boat, use a tube furnace, under a nitrogen atmosphere, at a heating rate of 5°C / min, and keep it at 900°C for 3h. After the reaction is finished, it will be cooled to room temperature, and a black solid is obtained, which is metallic phosphorus. Compounds and heteroatoms (nitrogen, phosphorus) co-doped porous carbon composite materials.

[0041] Performance characterization

[0042] The morphology and structure of the metal phosphide and porous carbon composite material obtained in Example 1 are shown in figure 2 with image 3 ,by figure 2 It can be seen that the morphology of the material is the morphology of particle accumulation, imag...

Embodiment 2

[0045] Put 6.00 g phytic acid into a 100 mL flat-bottom glass cup, add 1 mmol copper acetate, 20 mL ultrapure water, stir on a magnetic stirrer for 2 minutes, then add 2.0 g chitin and stir for 12 hours to mix well. The obtained mixture was vacuum-dried for 1 day to obtain a fluffy, sticky, slightly blue block solid. Put the obtained solid in a quartz boat, use a tube furnace, in a nitrogen atmosphere, heat up to 800°C at a heating rate of 5°C / min for 3 hours, and after the reaction is finished and lower to room temperature, a black solid is obtained.

Embodiment 3

[0047] Put 6.00 g phytic acid into a 100 mL flat-bottom glass cup, add 1 mmol copper acetate, 20 mL ultrapure water, stir on a magnetic stirrer for 2 minutes, then add 2.0 g chitin and stir for 12 hours to mix well. The obtained mixture was first put into liquid nitrogen to pre-freeze for 20 minutes, and then put into a freeze dryer under negative pressure to freeze-dry for 1 day to obtain a fluffy, sticky, light blue blocky solid. Put the obtained solid into a quartz boat, use a tube furnace, in a nitrogen atmosphere, heat up to 700°C at a heating rate of 5°C / min, and hold for 3 hours. After the reaction is finished, the black solid is obtained and it is obtained.

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Abstract

The invention provides a metal phosphide and heteroatom doped porous carbon composite material as well as preparation and application thereof. The porous carbon composite material is prepared by taking a biomass derived polymer and metal salt as raw materials. The composite material contains heteroatom functional groups and metal phosphide, metal forming the metal phosphide is one or more of Fe, Co, Ni, Cu, Rh, Ru, Mn and Mo, and the particle size of the metal phosphide is 1-80 nm. According to the metal phosphide and heteroatom doped porous carbon composite material, cheap and easily available substance derivatives are used as raw materials; the raw materials provide a carbon source, an oxygen source, a phosphorus source, a nitrogen source or a sulfur source, the metal phosphide and the heteroatom doped porous carbon material are combined under mild conditions, the preparation method is simple, and the obtained composite material has a large specific surface area, can provide a largenumber of sites with reaction activity, and has better performance in the fields of electrocatalysis, lithium-sulfur batteries, sodium batteries, supercapacitors and gas adsorption.

Description

Technical field [0001] The invention belongs to the field of energy materials, and specifically relates to a porous carbon composite material and its preparation and application. Background technique [0002] With the rapid development of society, the intensive use of fossil energy has not only reduced its storage capacity, but also brought a series of environmental problems. The global energy crisis caused by increasing environmental pollution and fossil fuel consumption has prompted people to seek green and sustainable clean energy. In recent years, scientific and technological workers around the world are actively developing green and environmentally friendly renewable energy technologies. Materials are one of the key factors in the development of renewable energy technology. [0003] Transition metal phosphides and heteroatom-doped porous carbon materials are two types of materials widely used in electrocatalysis, supercapacitors, lithium-sulfur battery electrodes and gas ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318
CPCC01B32/318
Inventor 赵丽杨照瑾杨东辉陆行韩宝航
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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