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Organic polymer keeping morphology of metal-organic frameworks (MOFs), and preparation method and application of organic polymer

A polymer and organic technology, applied in various application fields, can solve the problems of unstable appearance or macrostructure of MOFs, and achieve the effect of excellent performance

Active Publication Date: 2019-06-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention prepares an organic polymer that maintains the morphology of MOFs through a one-step method, which solves the problem of unstable appearance or macroscopic structure of the overall MOFs in the prior art

Method used

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  • Organic polymer keeping morphology of metal-organic frameworks (MOFs), and preparation method and application of organic polymer
  • Organic polymer keeping morphology of metal-organic frameworks (MOFs), and preparation method and application of organic polymer
  • Organic polymer keeping morphology of metal-organic frameworks (MOFs), and preparation method and application of organic polymer

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Effect test

Embodiment 1

[0026] 0.76g of p-phenylenediamine and 1.69g of copper nitrate were dissolved in ethanol, and the mixed solution was transferred to a reaction kettle, and reacted by solvothermal at 80°C for 24h, and centrifuged and dried to obtain a poly-p-phenylenediamine product that maintained the morphology of MOFs. The precipitate in the initial mixture was taken out (the reaction time was considered to be 1min), and recorded as the product of 1min, and then the product of solvothermal time of 30min and 1h was also collected to study its formation process. At the same time, the obtained poly-p-phenylenediamine is heat-treated under an inert gas atmosphere at 600° C. to obtain a carbon material, which is used as a negative electrode material for a lithium-ion battery.

[0027] as attached figure 1 As shown by the scanning electron microscope, when p-phenylenediamine and copper nitrate are mixed together, a spherical product will be formed rapidly, and small particles can be seen evenly di...

Embodiment 2

[0031] 0.76g of o-phenylenediamine and 2.04g of cobalt nitrate were dissolved in ethanol, and the mixed solution was transferred to a reaction kettle, and reacted by solvent heating at 120°C for 24 hours, and centrifuged and dried to obtain a poly-o-phenylenediamine product that maintained the morphology of MOFs. The obtained poly-o-phenylenediamine is heat-treated at 700° C. to obtain a carbon material, which is used as a negative electrode material for a sodium-ion battery.

[0032]At the beginning of the reaction, o-phenylenediamine and cobalt nitrate undergo a coordination reaction to form a sheet-like metal-organic framework. With the progress of the solvothermal reaction, o-phenylenediamine self-crosslinks to form nano-sheet poly-o-phenylenediamine. After high-temperature pyrolysis treatment, porous carbon nanosheets were obtained, which were used as anode materials for sodium-ion batteries, and their rate performance was tested, as shown in the appendix. Figure 5 shown...

Embodiment 3

[0034] 0.76g of m-phenylenediamine and 1.74g of ferric nitrate were dissolved in ethanol, the mixed solution was transferred to the reaction kettle, the solvothermal reaction was performed at 150 °C for 24 h, and the poly-m-phenylenediamine product with the morphology of MOFs was obtained by centrifugal drying. The obtained poly-m-phenylenediamine was heat-treated at 800°C to obtain a carbon material, which was used as an electrode material for a supercapacitor.

[0035] At the beginning of the reaction, m-phenylenediamine and ferric nitrate undergo a coordination reaction to form a sheet-like metal-organic framework with interwoven fibers. The morphology of the organic framework was maintained, and the obtained polymer was pyrolyzed to obtain a carbon sheet with interwoven fibers, which was used as an electrode material for supercapacitors, and its cycle performance was tested. The results are as follows. Image 6 shown at 1A g -1 After 5000 cycles at the same current densit...

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Abstract

The invention relates to an organic polymer keeping morphology of metal-organic frameworks (MOFs), and a preparation method and application of the organic polymer, and belongs to the technical field of organic polymers. The organic polymer keeping morphology of MOFs is prepared by self-polymerization of organic ligands in metal-organic frameworks (MOFs), the obtained polymer keeps original morphology of the MOFs, a carbonized carbon material also keeps original morphology, and the obtained carbon material shows excellent performance when being used as an electrode material of lithium ion batteries, sodium ion batteries and supercapacitors.

Description

technical field [0001] The invention relates to an organic polymer that maintains the morphology of MOFs prepared by self-polymerization of organic ligands in metal-organic frameworks (MOFs), and the obtained polymer maintains the original morphology of MOFs and carbonized carbon materials also maintain With the original morphology, the obtained carbon material can be applied in lithium-ion batteries, sodium-ion batteries, supercapacitors, etc., and belongs to the technical field of organic polymers. Background technique [0002] Metal-organic frameworks (MOFs) have received extensive attention due to their selectable composition, designable structure, and tunable nanospace [Furukawa H., Cordova K.E., O'Keeffe M., Yaghi O.M. The chemistry and applications of metal- organic frameworks [J]. Science, 2013, 341, 1230444]. MOFs with many special shapes can be prepared by adjusting ligands and metal ions, such as spheres, cubes, octahedrons, cuboids, etc. The resulting shapes and...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08G83/00H01G11/32H01M4/583H01M10/0525H01M10/054
CPCY02E60/10Y02E60/13
Inventor 宋怀河周春丽李昂王登科陈晓红
Owner BEIJING UNIV OF CHEM TECH
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