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Biomass porous carbon nanofoam as well as preparation method and application thereof

A nano-foam, biomass technology, applied in nanotechnology, chemical instruments and methods, carbon compounds, etc., can solve the problems of cumbersome purification, environmental pollution, etc., and achieve the effects of low price, improved hydrophilicity, and a wide range of sources.

Pending Publication Date: 2020-10-30
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of biomass porous carbon nano foam, preparation method and application thereof, to solve the problem of environmental pollution and follow-up complicated purification caused by the activation process of the existing carbon material preparation

Method used

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  • Biomass porous carbon nanofoam as well as preparation method and application thereof
  • Biomass porous carbon nanofoam as well as preparation method and application thereof
  • Biomass porous carbon nanofoam as well as preparation method and application thereof

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Embodiment 1

[0031] The preparation method of the biomass porous carbon nanofoam of the present embodiment includes the following steps:

[0032] (1) 10g of bamboo fungus was placed in an autoclave, pre-carbonized at 100°C for 12h after cleaning, dried at 80°C for 10h, and then ground to obtain product A;

[0033] (2) after product A is mixed with the mixed activator of basic zinc carbonate and urea, product B is obtained after grinding 15min; wherein, the mass ratio of product A, basic zinc carbonate and urea is 2:1:2.

[0034] (3) Under the protection of inert gas, the product B is heated to 750°C at 5°C / min, and carbon nanofoam is obtained after carbon activation reaction for 2h, centrifugal cleaning and drying.

Embodiment 2

[0036] The preparation method of the biomass porous carbon nanofoam of the present embodiment includes the following steps:

[0037] (1) 10g of bamboo fungus was placed in an autoclave, pre-carbonized at 150°C for 24h after cleaning, dried at 100°C for 12h, and then ground to obtain product A;

[0038] (2) after product A is mixed with the mixed activator of basic zinc carbonate and urea, product B is obtained after grinding 15min; wherein, the mass ratio of product A, basic zinc carbonate and urea is 2:1:1.

[0039] (3) Under the protection of inert gas, the product B was heated to 850°C at 5°C / min, and carbon nanofoam was obtained after carbon activation reaction for 1 h, centrifugal cleaning and drying.

Embodiment 3

[0041] The preparation method of the biomass porous carbon nanofoam of the present embodiment includes the following steps:

[0042] (1) 10g of bamboo fungus was placed in an autoclave, pre-carbonized at 200°C for 48h after cleaning, dried at 120°C for 5h, and then ground to obtain product A;

[0043] (2) after product A is mixed with the mixed activator of basic zinc carbonate and urea, product B is obtained after grinding 15min; wherein, the mass ratio of product A, basic zinc carbonate and urea is 2:2:1.

[0044] (3) Under the protection of inert gas, the product B is heated to 900°C at 5°C / min, and carbon nanofoam is obtained after carbon activation reaction for 0.5h, centrifugal cleaning and drying.

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Abstract

The invention discloses biomass porous carbon nanofoam as well as a preparation method and application thereof, and belongs to the technical field of carbon material preparation. The preparation method comprises the following steps: pre-carbonizing a biomass raw material, cleaning, drying and grinding to obtain a product A; mixing the product A with a mixed activating agent, and grinding to obtaina product B; and carrying out high-temperature carbon activation on the product B under the protection of inert gas, and carrying out centrifugal cleaning and drying to obtain the carbon nanofoam. According to the preparation method disclosed by the invention, the mixed activating agent is adopted, so that the preparation method is safe, non-corrosive, environment-friendly and free of pollution,the tedious process of subsequent end product purification is avoided, and the obtained biomass porous carbon nanofoam has an excellent pore structure and can be used as an energy storage material tobe applied to a supercapacitor.

Description

technical field [0001] The invention relates to the technical field of carbon material preparation, in particular to a biomass porous carbon nanofoam, a preparation method and applications thereof. Background technique [0002] With the huge consumption of fossil fuels in today's world and the unprecedented development of electric vehicles and mobile electronic devices, people's demand for new and clean energy is increasing. Therefore, the research on high-performance energy storage and conversion devices is increasingly important and urgent. Supercapacitors are a new type of clean energy storage device. Compared with traditional capacitors, supercapacitors have the advantages of low manufacturing cost, high energy density and long service life. However, the current commercialized carbon electrode materials have low energy density, which is difficult to meet the needs of electric vehicles and mobile electronic devices. Therefore, it is urgent to develop new high-energy-den...

Claims

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Application Information

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IPC IPC(8): C01B32/348B82Y40/00C01B32/318C01B32/324H01G11/34H01G11/36H01G11/44
CPCB82Y40/00C01B32/318C01B32/324C01B32/348H01G11/34H01G11/36H01G11/44Y02E60/13
Inventor 乔梁赵洋赵梅
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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