Preparation method of amino phenolic resin-based pyrrole nitrogen-doped carbon electrode material

A technology of aminophenolic resin and nitrogen-doped carbon, applied in chemical instruments and methods, hybrid capacitor electrodes, carbon compounds, etc., can solve the problem of reducing the utilization efficiency of nitrogen-containing functional groups and the proportion of pseudocapacitive sites in nitrogen-doped carbon materials Decrease and other issues, to achieve the effect of high capacity, improved utilization, high pseudocapacitance performance

Active Publication Date: 2020-05-26
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, in order to improve the conductivity of nitrogen-doped carbon materials, higher carbonization temperatures often lead to incomplete transformation of pyrrole nitrogen and pyridinium nitrogen to graphitic nitrogen (Electrochimica Acta, 2016, 205, 132-141; Journal of Mater...

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  • Preparation method of amino phenolic resin-based pyrrole nitrogen-doped carbon electrode material
  • Preparation method of amino phenolic resin-based pyrrole nitrogen-doped carbon electrode material
  • Preparation method of amino phenolic resin-based pyrrole nitrogen-doped carbon electrode material

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Embodiment 1

[0041] A. Dissolve 0.1 g of 3-aminophenol, 0.1 g of 3-fluorophenol and 0.1 g of hexamethylenetetramine in 80 mL of distilled water, and stir at room temperature for 1 h until the solid sample is completely dissolved. Then, this solution was transferred to a 100 mL reaction vessel, at 160 o C for 4 hours, after natural cooling to room temperature, the product was washed with water to pH = 7, and dried to obtain a 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample.

[0042] B, the obtained 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample in step A is heated from room temperature to 500°C in a nitrogen atmosphere o C, keep warm for 4 hours. Samples were collected after natural cooling to room temperature.

[0043] C. Grind and mix the sample obtained in step B with the activator KOH at a mass ratio of 1 / 6, and then heat from room temperature to 500 °C in a nitrogen atmosphere. o C, keep warm for 8 hours. Naturally cooled to room temperature...

Embodiment 2

[0051] A. Dissolve 0.05 g of 3-aminophenol, 0.15 g of 3-fluorophenol and 0.1 g of hexamethylenetetramine into 80 mL of distilled water, and stir at room temperature for 1 hour until the solid sample is completely dissolved. Then, this solution was transferred to a 100 mL reaction vessel, at 160 o C for 4 hours, after naturally cooling to room temperature, the product was washed with water to pH = 7, and dried to obtain a 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample.

[0052] B, the obtained 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample in step A is heated from room temperature to 500°C in a nitrogen atmosphere o C, keep warm for 4 hours. Samples were collected after natural cooling to room temperature.

[0053] C. Grind and mix the sample obtained in step B with the activator KOH at a mass ratio of 1 / 6, and then heat from room temperature to 500 °C in a nitrogen atmosphere. o C, keep warm for 8 hours. Naturally cooled to room te...

Embodiment 3

[0057] A. Dissolve 0.025 g of 3-aminophenol, 0.175 g of 3-fluorophenol and 0.1 g of hexamethylenetetramine in 80 mL of distilled water, and stir at room temperature for 1 h until the solid sample is completely dissolved. Then, this solution was transferred to a 100 mL reaction vessel, at 160 o C for 4 hours, after naturally cooling to room temperature, the product was washed with water to pH = 7, and dried to obtain a 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample.

[0058] B, the obtained 3-aminophenol-3-fluorophenol-formaldehyde resin microsphere sample in step A is heated from room temperature to 500°C in a nitrogen atmosphere o C, keep warm for 4 hours. Samples were collected after natural cooling to room temperature.

[0059] C. Grind and mix the sample obtained in step B with the activator KOH at a mass ratio of 1 / 6, and then heat from room temperature to 500 °C in a nitrogen atmosphere. o C, keep warm for 8 hours. Naturally cooled to room tempe...

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Abstract

The invention discloses a preparation method of an amino phenolic resin-based pyrrole nitrogen-doped carbon electrode material. The preparation method comprises the following specific steps of: A, preparing 3-aminophenol-3-halogenated phenol-formaldehyde resin, B, carrying out low-temperature carbonization on the 3-aminophenol-3-halogenated phenol-formaldehyde resin, and C, performing low-temperature activation on the carbonized 3-aminophenol-3-halogenated phenol-formaldehyde resin. The doping of a single pyrrole nitrogen configuration in the carbon material is realized through low-temperatureheat treatment; the utilization efficiency of the nitrogen-doped active sites in pseudocapacitance reaction is improved; and meanwhile, the energy consumption during preparation of the nitrogen-dopedcarbon material is reduced, and when the nitrogen-doped carbon material is used as a supercapacitor electrode material, the amino phenolic resin-based pyrrole nitrogen-doped carbon electrode materialshows the characteristics of high capacity, typical pseudocapacitance, good rate capability and high cycling stability.

Description

technical field [0001] The invention relates to a preparation method of an aminophenolic resin-based pyrrole nitrogen-doped carbon electrode material, and belongs to the technical field of electrochemical supercapacitors. Background technique [0002] As a new type of energy storage device, supercapacitors have attracted extensive attention in the industry due to their high power density and long life. The electrode material is a key factor affecting the capacity of supercapacitors, and its structure and interfacial properties play a crucial role in enhancing specific capacity, cycle stability, and capacitive performance such as rate capability. Electrode materials can generally be classified into three categories, carbon materials, conducting polymers, and metal oxides. Among them, carbon materials have become the most promising electrode materials due to their various forms, good electrical conductivity, light weight, fast charge and discharge speed, good stability, and c...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/318H01G11/44H01G11/34
CPCC01B32/348C01B32/318H01G11/44H01G11/34Y02E60/13
Inventor 郭万春田克松杨薇王君妍曹玲王海燕
Owner YANSHAN UNIV
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