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Method for preparing paper-base mesoporous carbon electrode material and method for preparing electrode

A paper-based mesoporous, carbon electrode technology, which is applied in the preparation/purification of carbon, hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc. The problem of large differences in material distribution, etc., can improve the electrochemical performance, the steps are simple, and the surface wettability can be improved.

Inactive Publication Date: 2018-08-28
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its wide range of sources and large differences, the structure of biomass-based carbon electrode materials, especially the distribution of pore structures, is very different, which greatly limits its application in electrode materials.

Method used

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  • Method for preparing paper-base mesoporous carbon electrode material and method for preparing electrode
  • Method for preparing paper-base mesoporous carbon electrode material and method for preparing electrode
  • Method for preparing paper-base mesoporous carbon electrode material and method for preparing electrode

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specific Embodiment approach 1

[0045] A preparation method of a paper-based mesoporous carbon electrode material, comprising the steps of:

[0046] Step 1. Weigh a certain quality of industrial filter paper, F127, 3-aminophenol, hexamethylenetetramine, 1,3,5-trimethylbenzene and distilled water, put the weighed material in a beaker and stir for 1 hour, Transfer to the reactor, set the reaction temperature to 180°C, and the reaction time to 12h, the reacted mixture is ready for use;

[0047] Step 2. Wash the mixture obtained after the reaction in step 1 with absolute ethanol and deionized water for 5 times, filter to obtain a filter paper with reddish-brown precipitate powder attached thereto, and place it in an oven to dry for 15 hours to obtain sample a for use ;

[0048] Step 3. Place the sample a obtained in step 2 in a tube furnace, carry out a temperature-programmed reaction under the protection of nitrogen, heat it from room temperature to 400°C at a heating rate of 2°C / min and keep it at the tempera...

specific Embodiment approach 2

[0061] A preparation method of a paper-based mesoporous carbon electrode material, comprising the steps of:

[0062] Step 1. Weigh a certain quality of industrial filter paper, F127, 3-aminophenol, hexamethylenetetramine, 1,3,5-trimethylbenzene and distilled water, put the weighed material in a beaker and stir for 2 hours, Transfer to the reactor, set the reaction temperature to 150°C, and the reaction time to 24h, the reacted mixture is ready for use;

[0063] Step 2. Wash the mixture obtained after the reaction in step 1 with absolute ethanol and deionized water for 4 times, filter to obtain a filter paper with reddish-brown precipitate powder attached and dry it in an oven for 15 hours to obtain sample a for use ;

[0064] Step 3. Place the sample a obtained in step 2 in a tube furnace, carry out a temperature-programmed reaction under the protection of nitrogen, and heat it from room temperature to 350°C at a heating rate of 3°C / min and keep it at the temperature for 3h, ...

specific Embodiment approach 3

[0078] According to the electrode preparation method of the electrode material prepared by the preparation method of a paper-based mesoporous carbon electrode material described in the first embodiment, the paper-based mesoporous carbon electrode material: acetylene black: PTFE emulsion: absolute ethanol is used in a mass ratio Mix 8:1:1:5 evenly, spread the obtained mixture evenly on the nickel foam current collector, and dry it in a vacuum drying oven at 120°C for 10 hours, take it out after cooling, and press it with a tablet machine to make a working electrode .

[0079] In the electrode preparation method of a paper-based mesoporous carbon electrode material described in this embodiment, the mass percent concentration of the PTFE emulsion is 10%.

[0080] In the electrode preparation method of a paper-based mesoporous carbon electrode material described in this embodiment, the smearing mass of the mixture is 2 mg / cm 2 .

[0081] In the electrode preparation method of a pa...

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Abstract

The invention provides a method for preparing a paper-base mesoporous carbon electrode material and a method for preparing an electrode, and belongs to the field of carbon material preparation methods. The method for preparing the paper-base mesoporous carbon electrode material comprises the steps that a certain amount of industrial filter paper, F127, 3-aminophenol, hexamethylenetetramine, trimethylbenzene and water are weighed, mixed, evenly stirred and transferred into a reaction still for reaction and cleaning, then placed in a tube furnace after being dried for carbonization in the nitrogen atmosphere, and finally cooled to the indoor temperature, 0.1 Mol of hydrogen chloride and deionized water are used for washing the mixture to the neutral, and drying is carried out; then a certainmass ratio of sample is weighed, after potassium hydroxide activation is carried out, the mixture is taken out after being dried in a drying box, and then the material is obtained. According to the method for preparing the paper-base mesoporous carbon electrode material and the method for preparing the electrode, a layer of carbon-carbon compound material of mesoporous carbon microspheres is loaded on the surface of the material through a one-step hydrothermal method, nitrogen, oxygen and other heteroatoms exist on the surface of the material, so that the material has good wettability and better ion accessibility. The potassium hydroxide activation method makes the specific surface area and pore structure of the material both have obvious improvement, the specific capacity is high, and the cycle performance is good.

Description

technical field [0001] The invention belongs to the field of preparation methods of carbon materials; in particular, it relates to a preparation method of a paper-based mesoporous carbon electrode material and an electrode preparation method. Background technique [0002] In recent years, biomass raw materials such as bagasse and poplar can be directly applied to supercapacitor carbon electrode materials after high-temperature calcination. Therefore, the development of new porous carbon electrode materials using biomass substrates as raw materials has attracted the attention and research of many scholars. [0003] Biomass has excellent multi-level porous structure, large pore size range, wide pore distribution, and is cheap and renewable. Moreover, after carbonization, the surface of the biomass fiber material has abundant functional groups, especially oxygen-containing functional groups such as hydroxyl and carboxyl groups, which endow the surface of the biomass fiber mate...

Claims

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Application Information

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IPC IPC(8): C01B32/05H01G11/86H01G11/24H01G11/32
CPCH01G11/24H01G11/32H01G11/86Y02E60/13
Inventor 李志国许升张文
Owner NORTHEAST FORESTRY UNIVERSITY
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