Preparation method for nitrogen-contained carbon micro-tube electrode material

An electrode material and a micro-tube technology, which is applied in the field of preparation of nitrogen-containing carbon micro-tube electrode materials, can solve problems such as ineffective utilization of reed flower resources, and achieve the effects of low cost, simple preparation process and mild conditions.

Inactive Publication Date: 2018-12-11
QIDONG CHUANGLYU GREENING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of reed flowers is mainly used as traditional Chinese medicine and pillow core, or as a substitute for ab...

Method used

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Embodiment 1

[0017] A preparation method of a nitrogen-containing carbon microtube electrode material, comprising the following steps: removing the collected inflorescences of reed plants, ultrasonically washing them in deionized water for 55 minutes, and then drying at 90°C for 24 hours to obtain a precursor; 30 parts of the precursor With 75 parts of ZnCl with a concentration of 0.04mol / L 2 After the solution is mixed, put it in a high-pressure reactor and react at 170°C for 5.5 hours to fully impregnate the precursor with the solution. After cooling to room temperature, transfer the impregnated sample and the liquid in the kettle to a beaker, and dry it in an oven at 110°C. , transfer the dried material to the quartz boat, and place the reaction boat in the center of the quartz tube of the vacuum tube furnace. ℃ for 3 hours, and then cooled to room temperature at a rate of 2°C / min under the protection of nitrogen. The nitrogen flow rate during the whole process was 90mL / min. The obtaine...

Embodiment 2

[0019] A method for preparing a nitrogen-containing carbon microtube electrode material, comprising the following steps: removing the collected inflorescences of reed plants, ultrasonically washing them in deionized water for 50 minutes, and then drying at 85°C for 23 hours to obtain a precursor; 25 parts of the precursor With 70 parts of ZnCl with a concentration of 0.04mol / L 2 After the solution is mixed, put it in a high-pressure reactor and react at 165°C for 5 hours to fully impregnate the precursor with the solution. After cooling to room temperature, transfer the impregnated sample and the liquid in the kettle to a beaker, and dry it in an oven at 105°C. Transfer the dried material to a quartz boat, place the reaction boat at the center of the quartz tube of the vacuum tube furnace, and raise the temperature of the sample to 720 °C at a rate of 8 °C / min in the tube furnace under the protection of nitrogen. Insulate for 2.5 hours, then cool down to room temperature at a ...

Embodiment 3

[0021] A method for preparing a nitrogen-containing carbon microtube electrode material, comprising the following steps: removing the collected inflorescences of reed plants, ultrasonically washing them in deionized water for 60 minutes, and then drying at 95°C for 25 hours to obtain a precursor; 35 parts of the precursor With 80 parts of ZnCl with a concentration of 0.04mol / L 2 After the solution is mixed, put it in a high-pressure reactor and react at 175°C for 6 hours to fully impregnate the precursor with the solution. After cooling to room temperature, transfer the impregnated sample and the liquid in the kettle to a beaker, and dry it in an oven at 115°C. The dried material was transferred to a quartz boat, and the reaction boat was placed in the center of the quartz tube of the vacuum tube furnace. Under the protection of nitrogen, the temperature of the sample was raised to 740 °C at a rate of 8 °C / min in the tube furnace. Insulate for 3.5 hours, then cool down to room...

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Abstract

The invention discloses a preparation method for a nitrogen-contained carbon micro-tube electrode material. The preparation method comprises the following steps that inflorescences of phragmites australis plants are taken down, ultrasonic washing is carried out in deionized water, and drying is carried out so as to obtain a precursor; and the precursor and a ZnCl2 solution are mixed and are placedin a high-pressure reactor for reaction for 5-6 hours, cooling is carried out to reach the room temperature, then the mixture is transferred into a beaker, drying is carried out, a dried material istransferred into a quartz boat, the reaction boat is placed at the center position of a quartz tube of a vacuum tube furnace, heating is carried out to reach 720-740 DEG C under the protection of nitrogen, heat preservation is carried out for 2.5-3.5 hours, cooling is carried out to reach the room temperature, an obtained sample is treated with hydrochloric acid and is washed to be neutral, suction filtration is carried out, and drying is carried out so as to obtain the electrode material. According to the preparation method, a metal catalyst and a template are not needed, the preparation process is simple, the conditions are mild, the yield is high, the cost is low, and prepared nitrogen-contained carbon micro-tubes are uniform in diameter, have a certain graphitization tendency and havethe micro-pore characteristics under the action of an activating agent.

Description

technical field [0001] The invention relates to a preparation method of nitrogen-containing carbon micron tube electrode material. Background technique [0002] Since 1991, the research on quasi-one-dimensional materials carbon nanotubes and carbon microtubes has expanded new directions for the application of carbon materials. Compared with the small size and easily clogged nanotubes, which usually only use the outer wall, the micron-scale hollow microtubes are more practical in the field of drug delivery microreactors. Carbon microtubes can be regarded as being rolled up and overlapped by multi-layer graphene, and the internal carbon is sp 2 The seamless cylindrical structure formed by formal hybridization has high modulus and high strength in the axial direction, and has mechanical properties, crystallinity, electrical conductivity, thermal conductivity and stability comparable to nanotubes, and has a large specific surface area, and the influence of defects is smaller th...

Claims

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Application Information

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IPC IPC(8): C01B32/05
CPCC01B32/05
Inventor 不公告发明人
Owner QIDONG CHUANGLYU GREENING ENG CO LTD
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