A kind of phenolic resin carbon microsphere and its preparation method and application

A technology of phenolic resin and carbon microspheres, which is applied in the preparation/purification of carbon, structural parts, electrical components, etc., can solve problems such as the inability to carry out surface structure, complex preparation methods, smooth surface of carbon microspheres, etc., to achieve spherical Controllable diameter and specific surface area, simple process, and excellent electrochemical performance

Active Publication Date: 2022-03-08
沙县宏盛塑料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: provide a kind of phenolic resin carbon microsphere and its preparation method and application, solve the complex operation of the preparation method of phenolic resin carbon microsphere in the prior art, and the surface of the prepared carbon microsphere is smooth, The problem of inability to control the surface structure

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  • A kind of phenolic resin carbon microsphere and its preparation method and application
  • A kind of phenolic resin carbon microsphere and its preparation method and application

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preparation example Construction

[0017] The present invention provides a kind of preparation method of described phenolic resin carbon microsphere, at least comprises the following steps:

[0018] 1) dissolving the thermoplastic phenolic resin in an alkaline solution to obtain system I;

[0019] 2) Add phenol, aldehyde, and catalyst into the reaction kettle, and obtain system II after heating and reacting;

[0020] 3) Mixing system I and system II evenly, adjusting the pH of the system to 6.5-10.5, heating and reacting, and then separating and drying to obtain phenolic resin microspheres.

[0021] 4) Carbon microspheres were obtained after carbonization of phenolic resin microspheres.

[0022] The main mechanism of this method is that the main component in alkaline solution is linear long-chain phenolic resin, which has good solubility and stability in alkaline solution, and the main component in acidic solution is low molecular resin and unreacted phenol and aldehyde , when the acidic solution is mixed wit...

Embodiment 1

[0042] Dissolve 2 g of thermoplastic phenol-formaldehyde resin in 100 ml of aqueous sodium hydroxide solution to obtain System I; add 0.2 g of phenol, 0.53 g of formaldehyde solution, and 0.001 g of oxalic acid into the reactor, heat to 80°C for 30 minutes, and obtain System II; combine System I with Mix the system II evenly, adjust the pH of the system to 10, heat to 100°C for 24 hours; use a 5000r / min centrifuge to separate for 5 minutes, and then put it in a 120°C oven to dry to obtain phenolic resin microspheres; put the above phenolic resin microspheres in Under nitrogen atmosphere, carbonize at 650° C. for 4 hours to obtain the phenolic resin carbon microspheres C1. The prepared phenolic resin carbon microspheres have a particle size of 173nm and a surface specific surface area of ​​56m 2 / g, carbon content is 89.3%, BET specific surface area is 657m 2 / g, the pore volume is 0.25cm 3 / g, the average pore size is 5.6nm, please refer to figure 1 .

[0043] Wherein, the...

Embodiment 2

[0045] Dissolve 2 g of thermoplastic phenol-formaldehyde resin in 50 ml of aqueous sodium hydroxide solution to obtain system I; add 0.2 g of phenol, 0.53 g of formaldehyde solution, and 0.001 g of oxalic acid into the reactor, heat to 80°C for 30 minutes to obtain system II; combine system I with Mix the system II evenly, adjust the pH of the system to 10, heat to 100°C for 24 hours; use a 5000r / min centrifuge to separate for 5 minutes, and then put it in a 120°C oven to dry to obtain phenolic resin microspheres; put the above phenolic resin microspheres in Under nitrogen atmosphere, carbonize at 650°C for 4 hours to obtain the phenolic resin carbon microspheres C2. The prepared phenolic resin carbon microspheres have a particle size of 253nm and a surface specific surface area of ​​51m 2 / g, the carbon content is 91.1%, and the BET specific surface area is 552m 2 / g, the pore volume is 0.23cm 3 / g, the average pore diameter is 7nm.

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Abstract

The invention relates to the field of chemical synthetic resin carbon microspheres, in particular to a phenolic resin carbon microsphere, its preparation method and application. A method for preparing phenolic resin carbon microspheres, comprising the following steps: dissolving thermoplastic phenolic resin in an alkaline solution to obtain system I; adding phenol, aldehyde, and a catalyst into a reaction kettle, and heating and reacting to obtain system II; Mix evenly with system II, adjust the pH of the system to 6.5-10.5, heat the reaction, and then separate and dry to obtain phenolic resin microspheres; carbonize the phenolic resin microspheres to obtain carbon microspheres. The remarkable advantages of the present invention are: as a method for preparing the carbon microspheres, it has abundant raw materials, low preparation cost, simple process, high yield, no need to add surfactants, emulsifiers and other auxiliary agents in the preparation process, mild reaction conditions, suitable for Large-scale industrial production and other advantages. The prepared carbon microspheres have uniform particle size, controllable ball diameter and specific surface area, high compressive strength and excellent electrochemical performance.

Description

technical field [0001] The invention relates to the field of chemical synthetic resin carbon microspheres, in particular to a phenolic resin carbon microsphere and its preparation method and application. Background technique [0002] As a kind of green energy, new energy has received extensive attention and research in recent years. The most important thing in the use of new energy is the storage and release of energy. Lithium-ion batteries and super capacitors are new high-energy batteries that have been widely used in recent years. Its research and development have made significant progress, and it is a multidisciplinary interdisciplinary project involving chemistry, physics, materials, energy and electronics. There are still many problems in the development. As the main component of energy storage devices, anode materials have a significant impact on their performance. At present, the commercially used anode materials mainly include graphite, activated carbon, etc., but t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05H01M4/583H01M4/62H01M10/0525H01M10/054
CPCC01B32/05H01M4/583H01M4/625H01M10/0525H01M10/054Y02E60/10
Inventor 黄世俊罗建峰艾生儿王鑫黄梦芸
Owner 沙县宏盛塑料有限公司
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