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Preparation and application of biomass-based porous carbon material based on platanus orientalis seeds

A technology of three-ball sycamore and porous carbon material, applied in the field of materials, can solve the problems such as the related reports of biomass-based porous carbon materials, increase the risk of polluting the environment, increase the amount of strong alkali, etc., and achieve high specific capacitance. The effect of small usage and optimized performance

Pending Publication Date: 2019-04-16
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the method described in this invention not only has complicated steps, but also increases the consumption of strong alkali in the process, and also inevitably increases the risk of polluting the environment.
[0005] Up to now, there has been no relevant report on the preparation of biomass-based porous carbon materials using the seeds of Platanus tribulus

Method used

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  • Preparation and application of biomass-based porous carbon material based on platanus orientalis seeds
  • Preparation and application of biomass-based porous carbon material based on platanus orientalis seeds
  • Preparation and application of biomass-based porous carbon material based on platanus orientalis seeds

Examples

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Effect test

Embodiment 1

[0027] (1) separating the syringa syringae seeds from the syringa syringae fruit, cleaning and drying with ethanol and water; then pulverizing it and sieving through an 80-mesh sieve to obtain dry syringa syringae seed powder;

[0028] (2) Take 3g of dried Platanus tribulus seed powder, 2.7g of potassium hydroxide and 30g of deionized water into a 50mL polytetrafluoroethylene liner, hydrothermally treat it in a high-pressure hydrothermal reactor at 150°C for 5h, and then cool to room temperature. Subsequently, the hydrothermal product is dried to obtain pretreated Platanus tribulb seed powder containing potassium hydroxide;

[0029] (3) Put the Platanus tribulus seed powder obtained in step (2) in a tube furnace, and under the protection of nitrogen, heat up to 700°C at a heating rate of 5°C / min and pyrolyze at this temperature for 4h, then Naturally cool to room temperature. The carbonized material was refluxed with 4 mol / L acetic acid solution at 60 °C for 3 h; then washed...

Embodiment 2

[0033](1) separating the sycamore seeds from the sycamore fruit, cleaning and drying with ethanol and water, then pulverizing them, and sieving through a 100-mesh sieve to obtain dry syringa seeds powder;

[0034] (2) Take 3g of dried Platanus tribulus seed powder, 2.7g of potassium hydroxide and 30g of deionized water into a 50mL polytetrafluoroethylene lining, hydrothermally treat in a high-pressure hydrothermal reactor at 160°C for 3h, and then cool to room temperature; then the hydrothermal product is dried to obtain the pretreated Platanus tribulus seed powder containing potassium hydroxide;

[0035] (3) Place the Platanus tribulus seed powder obtained in step (2) in a tube furnace, and under the protection of nitrogen, heat up to 800°C at a heating rate of 5°C / min and pyrolyze at this temperature for 2h, then Naturally cool to room temperature. The carbonized material was refluxed with 4 mol / L hydrochloric acid solution at 60 °C for 3 h, then washed with deionized water...

Embodiment 3

[0040] (1) separating the sycamore seeds from the sycamore fruit, cleaning and drying with ethanol and water, then pulverizing them, and sieving through a 100-mesh sieve to obtain dry syringa seeds powder;

[0041] (2) Take 3g of dried Platanus tribulus seed powder, 2.7g of potassium hydroxide and 30g of deionized water into a 50mL polytetrafluoroethylene lining, and hydrothermally treat it in a high-pressure hydrothermal reactor at 140°C for 7h; then cool to room temperature, followed by drying the hydrothermal product to obtain the pretreated Platanus tribulus seed powder containing potassium hydroxide;

[0042] (3) Put the sycamore seed powder obtained in step (2) in a tube furnace, and under the protection of nitrogen, heat up to 900°C for 2 hours at a rate of 5°C / min for pyrolysis, and then cool naturally to room temperature. The carbonized material was refluxed with 4mol / L sulfuric acid solution at 60°C for 3h, then washed with deionized water to neutrality, and finally ...

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Abstract

The invention provides a preparation method of a biomass-based porous carbon material based on platanus orientalis seeds. The method specifically comprises the following steps that the platanus orientalis seeds are crushed and screened to obtain platanus orientalis seed powder; 5-10 parts by weight of the platanus orientalis seed powder, 5-10 parts by weight of solid alkali and 80-90 parts by weight of water are placed in a hydrothermal reaction kettle for pretreatment, the mixture is taken out and dried, and pretreated powder is obtained; the pretreated powder is subjected to carbonization treatment under the protection of inert gas, and a carbonized product is obtained; the carbonized product is sequentially subjected to acid washing and water washing and dried to constant weight, and the biomass-based porous carbon material is obtained. According to the preparation method, an alkali water heat treatment and high-temperature carbonization process is utilized, the preparation processof the biomass carbon material is simplified, and the use amount of an activating agent, namely strong base and the pollution to the environment are reduced. The obtained porous carbon material is excellent in performance when used as an electrode material of a supercapacitor, and has wide market application prospects.

Description

technical field [0001] The invention belongs to the field of materials, and relates to the technology of preparing porous carbon materials by using plant resources, in particular to the preparation and application of biomass-based porous carbon materials. Background technique [0002] Supercapacitor is an ideal electric energy storage device, because its power density is significantly higher than that of other batteries, and it has excellent performance such as fast charge and discharge capability, long cycle life, and no pollution to the environment, so it has a wide range of application prospects. As a key component of supercapacitors, electrode materials determine the performance of supercapacitors. Porous carbon materials have the advantages of large specific surface area, good electrical conductivity, and excellent physical and chemical stability, so they are recognized as the most suitable electrode materials. In recent years, in order to cope with the energy crisis, ...

Claims

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Application Information

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IPC IPC(8): C01B32/318C01B32/342C01B32/348H01G11/34H01G11/44H01G11/86
CPCH01G11/34H01G11/44H01G11/86C01B32/318C01B32/342C01B32/348Y02E60/13
Inventor 蒋敏杨菲段咏欣张建明
Owner QINGDAO UNIV OF SCI & TECH
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