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Porous carbon electrode material with easily-regulated microstructure as well as preparation method and application of porous carbon electrode material

A porous carbon electrode and microstructure technology, which is applied in the preparation/purification of carbon, negative electrodes, battery electrodes, etc., can solve the problems of complex hard template removal process, high cost, and complicated preparation of soft template reagents, etc., to achieve pore structure Easy to control, high conductivity, and ensure the uniformity of dispersion

Active Publication Date: 2019-09-17
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method includes the soft template method and the hard template method. The hard template method is usually used to prepare porous carbon materials with uniform pore structure, but the removal process of the hard template method is relatively complicated and the cost is high. The soft template method uses intermolecular forces to Controlling and preparing porous carbon materials, but the preparation of soft template reagents is relatively complicated and also has the disadvantage of high cost

Method used

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  • Porous carbon electrode material with easily-regulated microstructure as well as preparation method and application of porous carbon electrode material
  • Porous carbon electrode material with easily-regulated microstructure as well as preparation method and application of porous carbon electrode material
  • Porous carbon electrode material with easily-regulated microstructure as well as preparation method and application of porous carbon electrode material

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preparation example Construction

[0048] Such as figure 1 Shown, the preparation method of the porous carbon electrode material that a kind of microstructure of the present invention is easy to regulate comprises the steps:

[0049] 1) Introduce -COOH, -OH, -SO into carbon-rich raw materials by oxidation method 3 H,-NH 2 、-C=O,-NO 2 Hydrophilic groups to make amphiphilic carbon-rich materials;

[0050] 2) Disperse amphiphilic carbon-rich materials, biomass materials, and polymerized monomers in 1 to 100 parts by weight of water in a weight ratio of 1: (0.01 to 5): (0 to 5), mix them uniformly, and obtain The gel is dried and solidified; during this process, if the amount of polymerized monomers > 0, then add a cross-linking agent and an initiator in sequence to carry out the polymerization reaction; wherein the amount of the cross-linking agent is 0.01 to 10% of the weight of the acrylamide; The amount of agent used is 0.01-5% of the weight of acrylamide; if the amount of polymerized monomer added is zero,...

Embodiment 1

[0065] Weigh 2g of oxidatively modified amphiphilic anthracite, 2g of lignin, 2g of acrylic acid and 30g of water into the reactor, stir and mix at room temperature for 0.5h, add 0.2g of crosslinking agent and 0.01g of initiator, and heat up to 60~ Make it polymerized and gelatinized at 70°C; dry the obtained gel directly in an oven, then put it into a magnetic boat and put it into a tube furnace; first pass nitrogen as a protective gas, and then heat up at a rate of 0.5°C / min To 600°C, hold for 2 hours, then raise the temperature to 1000°C at a rate of 3°C / min, and hold for 4 hours; then cool naturally to room temperature under the protection of nitrogen, take out the material, and get the porous carbon electrode material after crushing. The Raman spectrum of the porous carbon anode material is shown in image 3 As shown, the SEM image is shown in Figure 4 shown.

[0066] Sodium ion electronic assembly and testing: Mix the prepared porous carbon electrode material powder w...

Embodiment 2

[0071] Weigh 2g of oxidatively modified amphiphilic anthracite, 10g of lignin, 10g of acrylic acid and 100g of water into the reactor, stir and mix at room temperature for 0.5h, add 0.2g of crosslinking agent and 0.01g of initiator, and heat up to 60~ Make it polymerized and gelatinized at 70°C, dry the obtained gel directly in an oven, then put it into a magnetic boat and put it into a tube furnace; first pass nitrogen as a protective gas, and then heat up at a rate of 2°C / min Heat to 500°C, hold for 2 hours, then raise the temperature to 1600°C at a rate of 3°C / min, and hold for 4 hours; then cool naturally to room temperature under the protection of nitrogen, take out the materials, and obtain porous carbon electrode materials after crushing.

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Abstract

The invention relates to a porous carbon electrode material with an easily-regulated microstructure as well as a preparation method and application of the porous carbon electrode material. The porous carbon electrode material has the characteristics of long-range disorder and short-range order and is prepared by introducing a polar group to a carbon-rich raw material to prepare an amphipathic carbon-rich material, then, adding water to mix the amphipathic carbon-rich material with a biomass material and / or an amphipathic polymer material, then, carrying out gelatination, and then, carrying out crosslinking, curing and high-temperature pyrolysis. The microstructure of the porous carbon electrode material can be regulated by regulating the ratio of the raw materials, the moisture content of a gel as well as the treatment temperature during crosslinking, curing and high-temperature pyrolysis. The porous carbon electrode material disclosed by the invention is high in carbon yield and excellent in conductivity so as to be particularly used as an anode material of a sodium-ion battery or an electrode material of a supercapacitor; and the porous carbon electrode material is simple in preparation method, available in raw materials and low in cost so as to be suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, in particular to a porous carbon electrode material whose microstructure is easy to regulate, its preparation method and application. Background technique [0002] With the depletion of fossil fuels, the use of renewable energy such as solar energy and wind energy has attracted more and more attention. However, the intermittent characteristics of these renewable energy sources make them unable to supply power to the grid continuously and stably. Therefore, the development of energy storage systems is of great importance. The use of renewable energy is crucial. Carbon materials have been widely studied as electrode materials for energy storage systems due to their excellent electrical conductivity, tailorability, and low cost. [0003] The development and application of high-performance, low-cost electrode materials is an important step towards commercialization of secondar...

Claims

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Application Information

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IPC IPC(8): C01B32/05C01B32/318C01B32/33H01G11/24H01G11/44H01M4/587H01M10/054
CPCC01B32/05C01B32/318C01B32/33H01G11/24H01G11/44H01M4/587H01M10/054H01M2004/021H01M2004/027Y02E60/10Y02E60/13
Inventor 王海洋王守凯张功多刘书林朱洪喆李懿轩陈雪
Owner SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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