Preparation method of three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material

A three-dimensional hollow and composite material technology is applied in the field of preparation of carbon materials and magnetic carbon composite materials.

Inactive Publication Date: 2013-10-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the porous material is prepared with polyurethane as a template, and the material structure is easy to collapse after the template is removed, and a method for preparing a three-dimensional hollow ultra-light structural carbon material and a magnetic carbon composite material is provided

Method used

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  • Preparation method of three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material
  • Preparation method of three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material
  • Preparation method of three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material

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specific Embodiment approach 1

[0025] Specific implementation mode 1: The preparation method of the three-dimensional hollow ultra-light structural carbon material and magnetic carbon composite material in this embodiment is carried out according to the following steps:

[0026] One, prepare grafted polyacrylic acid polyurethane sponge;

[0027] 2. Immerse the grafted polyacrylic acid polyurethane sponge in the electrolyte solution with a concentration of 0.001mol / L~2mol / L for 10s~48h. Sintering at a temperature of 30min to 120h, the three-dimensional hollow ultra-light structure carbon material and magnetic carbon composite material can be obtained;

[0028] The polyurethane sponge described in step 1 is polyether polyurethane or polyester polyurethane;

[0029] The electrolyte solution described in step 2 is ammonium nitrate solution, ammonium acetate solution, ferric acetate solution, ferrous acetate solution, cobalt nitrate solution, cobalt acetate solution, nickel nitrate solution, ferric nitrate solu...

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment differs from Embodiment 1 in that in step 2, the grafted polyacrylic polyurethane sponge is immersed in an electrolyte solution with a concentration of 0.01 mol / L-1.9 mol / L, and the soaking time is 1 min-40 h. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, the grafted polyacrylic polyurethane sponge is immersed in an electrolyte solution with a concentration of 0.1 mol / L for 20 hours. Others are different from the first or second specific embodiment.

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Abstract

The invention relates to a preparation method of a three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material, which relates to a preparation method of a carbon material and magnetic carbon composite material, and is used for solving the technical problem that a material structure is likely to collapse after a template is removed when a porous material is prepared by taking polyurethane as the template. The preparation method comprises the following steps of: 1, preparing a polyacrylic acid grafted polyurethane sponge; and 2, immersing and soaking the polyacrylic acid grafted polyurethane sponge in an electrolyte solution, and then sintering the polyacrylic acid grafted polyurethane sponge taken out of the solution to obtain the three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material. According to the preparation method provided by the invention, the problem that the material structure is likely to collapse after the template is removed when the porous material is prepared by taking the polyurethane as the template is avoided. The three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material prepared by the preparation method is low in apparent density, and the minimum density of the material can reach 3.2mg/cm<3>. Raw materials adopted in the preparation method are low in cost and toxicity and easily available, and the preparation method is simple and easy to operate. The three-dimensional hollow ultralight structure carbon material and magnetic carbon composite material prepared by the preparation method has a multi-scale structure of nanometer, micrometer, millimeter and above. The preparation method belongs to the field of preparation methods of carbon material and magnetic carbon composite materials.

Description

technical field [0001] The invention relates to a preparation method of a carbon material and a magnetic carbon composite material. Background technique [0002] Carbon material, Fe 2 o 3 / C,Fe 3 o 4 / C, Co / C, Ni / C composite materials are widely used in the fields of separation, environment, energy, and chemical industry. For example, porous activated carbon materials have a large specific surface area, which can be used for purification and adsorption of domestic water, and can also for gas phase adsorption. Graphite carbon material has good electrical conductivity, its layered structure facilitates the insertion and extraction of lithium ions, has high charge and discharge efficiency, and has a good charge and discharge potential platform, and is widely used in lithium ion battery negative electrode materials. Doping metal Co and Ni into the carbon material to make Co / C and Ni / C composite materials can improve the conductivity of the material, thereby improving the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B32/05
Inventor 潘钦敏陈宁
Owner HARBIN INST OF TECH
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