3D honeycomb-like foam carbon material, preparation method and applications thereof

A honeycomb and foam carbon technology, applied in the field of materials, can solve problems such as environmental pollution

Pending Publication Date: 2019-05-07
QINGDAO NINEX NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fossil energy is increasingly depleted, and the existing traditional energy system can no longer meet the needs of modern industry, agriculture, and economic development. The use and consumption of fuel oil and coal have also brought serious environmental pollution.

Method used

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  • 3D honeycomb-like foam carbon material, preparation method and applications thereof
  • 3D honeycomb-like foam carbon material, preparation method and applications thereof
  • 3D honeycomb-like foam carbon material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of 3D honeycomb foam carbon material

[0033] (1) Add tartary buckwheat flour with a particle size of 60 mesh in the KOH solution at a mass ratio of 2:1 to alkali, and stir at a speed of 40r / min for 1.5h to obtain a gel;

[0034] (2) Dry the gel prepared in step (1) at 80°C for 12h, then place it in a tube furnace, under the protection of argon, raise the temperature at a rate of 3°C / min to 200°C for 1h, and then continue Raise the temperature at a rate of 3°C / min to 400°C for 2 hours, then raise the temperature to 700°C at a rate of 3°C / min, then hold it for 2 hours, and finally cool to room temperature to prepare a 3D cellular foam carbon material precursor;

[0035] (3) The 3D honeycomb foam carbon material precursor prepared in step (2) was repeatedly suction-filtered and washed with 15% hydrochloric acid solution and deionized water, and then dried at 80°C for 12 hours to obtain a 3D honeycomb carbon foam material.

Embodiment 2

[0037] Preparation of 3D honeycomb foam carbon material

[0038] (1) Add tartary buckwheat powder with a particle size of 40 mesh in the NaOH solution at a mass ratio of 2:3 to the alkali, and stir for 2 hours at a speed of 30 r / min to obtain a gel;

[0039](2) Dry the gel prepared in step (1) at 70°C for 16h and place it in a tube furnace under the protection of helium, raise the temperature to 200°C at a rate of 5°C / min, keep it warm for 1h, and then continue Raise the temperature to 400°C at a rate of 5°C / min and then hold it for 2 hours, then raise the temperature to 700°C at a rate of 5°C / min, hold it for 2 hours, and finally cool it to room temperature to prepare a 3D cellular foam carbon material precursor;

[0040] (3) The 3D honeycomb foam carbon material precursor prepared in step (2) was repeatedly suction-filtered and washed with 15% hydrochloric acid solution and deionized water, and then dried at 70°C for 16 hours to obtain a 3D honeycomb carbon foam material. ...

Embodiment 3

[0042] Preparation of 3D honeycomb foam carbon material

[0043] (1) Add tartary buckwheat powder with a particle size of 80 mesh to the KOH solution at a mass ratio of 1:2 to the alkali, and stir for 2 hours at a speed of 20 r / min to obtain a gel;

[0044] (2) Dry the gel prepared in step (1) at 60°C for 20 hours, then place it in a tube furnace, under the protection of argon, heat it up to 100°C at a rate of 4°C / min, keep it warm for 2 hours, and then continue Raise the temperature to 300°C at a rate of 4°C / min and then hold it for 2 hours, then raise the temperature to 700°C at a rate of 4°C / min, hold it for 2 hours, and finally cool it to room temperature to prepare a 3D cellular foam carbon material precursor;

[0045] (3) The 3D honeycomb foam carbon material precursor prepared in step (2) was repeatedly suction-filtered and washed with 10% hydrochloric acid solution and deionized water, and then dried at 60°C for 20 hours to obtain a 3D honeycomb carbon foam material. ...

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Abstract

The invention relates to a 3D honeycomb-like foam carbon material, a preparation method and applications thereof, and belongs to the technical field of materials. According to the method, Fagopyrum tataricum is used as a raw material, an alkali solution is used as an activator, a gel is formed and dried, the dried gel is carbonized, and finally impurity removing, washing and drying are performed to prepare the 3D honeycomb-like foam carbon material. According to the present invention, the method has characteristics of simpleness, easy operation, mild reaction condition, convenient post-treatment, high yield (24.5%) and low cost, and is suitable for large-scale industrial production; and the obtained carbon material has a honeycomb-like multi-level pore structure, and a large number of micropores and mesopores are uniformly distributed on the single layer plane; with the application of the 3D honeycomb-like foam carbon material as an electrochemical capacitor electrode material, the 3Dhoneycomb-like foam carbon material has excellent electrochemical energy storage performance, and is the excellent electrode material; and the 3D honeycomb-like foam carbon material can be further developed into a supercapacitor, and has potential and broad application prospects in the field of electrochemical energy storage.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a 3D honeycomb foam carbon material and its preparation method and application. Background technique [0002] The energy crisis and environmental protection are two major problems faced by countries in the world today, and the sustainable development of the global economy and society is facing severe challenges. Fossil energy is increasingly depleted, and the existing traditional energy system can no longer meet the needs of modern industry, agriculture, and economic development. The use and consumption of fuel oil and coal have also brought serious environmental pollution. With the progress of society and the continuous improvement of people's living standards, the development of new energy sources and new energy storage facilities is a problem that we must solve. The successful development of supercapacitors is a revolution in energy storage equipment. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01G11/24H01G11/44
CPCY02E60/13
Inventor 黄静李长明代方银
Owner QINGDAO NINEX NEW ENERGY TECH CO LTD
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