Preparation method for modified phenolic resin electrode materials

A technology of phenolic resin and electrode materials, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of difficult polymer dispersion, low reactivity, and easy agglomeration, and achieve good stability, improve dispersion, and reduce agglomeration. Effect

Active Publication Date: 2018-10-26
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, graphene itself is neither hydrophilic nor lipophilic, its reactivity is not high, it is easy to agglomerate, and it is difficult to achieve good dispersion in polymers.

Method used

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  • Preparation method for modified phenolic resin electrode materials
  • Preparation method for modified phenolic resin electrode materials
  • Preparation method for modified phenolic resin electrode materials

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preparation example Construction

[0026] Preparation of the working electrode: mix the electrode material, carbon black and binder of the present invention with N-methylpyrrolidone evenly, apply it on the platinum electrode and dry it, and then test it on the CHI660D electrochemical workstation.

[0027] Cyclic voltammetry curve: room temperature, 6mol / L KOH electrolyte, scanning voltage -0.2~0.4V.

[0028] Constant current discharge curve: at room temperature, the current density is 1.0A / g.

[0029] AC impedance spectroscopy: at room temperature, a standard saturated Ag / AgCl electrode is used as a reference electrode, the glassy carbon electrode whose surface is coated with the electrode material of the present invention is used as a working electrode, and a platinum electrode is used as a counter electrode, the KOH electrolyte of 6mol / L, and the voltage is 0.4V, the frequency range is 0.01Hz ~ 100kHz.

Embodiment 1

[0031] (1) Under stirring, according to the weight ratio of phenol and formaldehyde is 1:1.2, formaldehyde is added to the phenol after melting, then add graphene oxide of 0.8wt% of phenol weight, stir 10~60min, then add phenol 0.8wt% ammonia water by weight to obtain the first solution.

[0032] (2) The temperature of the first solution was raised to 80° C. in 90 minutes, and to 95° C. in 30 minutes, and then kept for 40 minutes to obtain the second solution.

[0033] (3) Cool the second solution immediately. When the temperature of the solution drops to 80°C, start dehydration under reduced pressure. When the temperature of the solution drops to 60°C, start heating to keep the second solution in an azeotropic state. 90°C, when the gel time at 150°C reaches 100s, stop dehydration to obtain modified phenolic resin.

[0034] (4) The temperature of the modified phenolic resin was raised to 1000° C. at 6° C. / min under the protection of an inert gas, kept at a temperature of 4 ho...

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Abstract

The invention discloses a preparation method for modified phenolic resin electrode materials. The method includes the following steps: (1) adding formaldehyde to phenol, adding graphene oxide, and adding a base catalyst to prepare a first solution; (2) heating up the first solution to 75-85 DEG C, heating up to 90-98 DEG C, and keeping the temperature for 30-50 min to prepare a second solution; (3) cooling the second solution, starting to dehydrating under reduced pressure when the temperature lowers to 70-80 DEG C, starting to heat up when the temperature lowers to 60-65 DEG C to make the second solution keep a constant boiling state, controlling the temperature of the solution to be not more than 90 DEG C, and preparing modified phenolic resin; and (4) heating up the modified phenolic resin to 800-1100 DEG C at 2-10 DEG C/min under the protection of an inert gas, keeping the temperature for 2-6 h to prepare the modified phenolic resin electrode materials. According to the method, electrode materials with good electrical properties can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a modified phenolic resin electrode material, in particular to a preparation method of a graphene oxide modified phenolic resin electrode material. Background technique [0002] With the rapid development of social economy and the gradual improvement of human living standards, the consumption of energy is also increasing. Our current energy strategy is still based on various fossil fuels, which can easily cause energy crisis and environmental pollution. People are working hard to develop clean and efficient new energy sources (such as hydrogen energy, solar energy, wind energy, nuclear energy, tidal energy, etc.) to replace fossil energy. However, the application of these new energy sources is greatly restricted by natural conditions, and the output power is not stable. Therefore, how to store energy efficiently and conveniently is a challenging issue. [0003] Supercapacitors have the characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/36C08G8/10C08K3/04
CPCC08G8/10C08K3/042H01G11/30H01G11/36Y02E60/13
Inventor 田谋锋王雷姚亚琳孙洪鑫刘晶涂晨辰孙燚张力宋金梅魏旭
Owner 北京玻钢院复合材料有限公司
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