A preparing method and application of a three-dimensional nanoflower metal-organic framework material

A metal-organic framework, three-dimensional nanotechnology, which is applied in the field of nanomaterial preparation technology and energy storage, can solve the problems that have not yet been developed, and achieve the effects of good supercapacitive performance, favorable ion transport, excellent specific capacitance and stability.

Active Publication Date: 2019-04-02
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Has been widely considered as a potential electrode material for supercapacitors, but has not yet been developed

Method used

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  • A preparing method and application of a three-dimensional nanoflower metal-organic framework material
  • A preparing method and application of a three-dimensional nanoflower metal-organic framework material
  • A preparing method and application of a three-dimensional nanoflower metal-organic framework material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 (preparation of NiCo-MOFs)

[0035] Dissolve 0.0892g of cobalt chloride hexahydrate, 0.0891g of nickel chloride hexahydrate, and 0.1246g of terephthalic acid in a mixture made of 32mL N,N-dimethylformamide, 2mL ethanol, and 2mL deionized water. In the solution, sonicate at room temperature for 20 minutes to mix the reactants uniformly to obtain the mixed solution A.

[0036] Transfer the mixed solution A to a 50 mL polytetrafluoroethylene liner, put it into a stainless steel container and keep it warm at 140°C for 48 hours, then cool it down to room temperature for 8 hours, and finally obtain a yellow-white solid powder crystal. Centrifuge and wash three times with N, N-dimethylformamide and water respectively, the rotation speed is 8000rpm / min, and the centrifugation time is 6min / time, and the obtained product is vacuum-dried at 80°C for 12-16 hours to obtain petals composed of two-dimensional nanosheets with a thickness of about 110-140nm three-dimension...

Embodiment 2

[0037] Embodiment 2 (preparation of NiMn-MOFs)

[0038] Take 0.0742g of manganese chloride hexahydrate, 0.0891g of nickel chloride hexahydrate, and 0.1246g of terephthalic acid dissolved in a mixture made of 32mLN,N-dimethylformamide, 2mL ethanol, and 2mL deionized water. In the solution, sonicate at room temperature for 20 minutes to mix the reactants uniformly to obtain the mixed solution B.

[0039] The mixed liquid B was transferred to a 50mL polytetrafluoroethylene liner, and then put into a stainless steel container at a temperature of 140°C for 48 hours, cooled to room temperature for 8 hours, and finally a light green solid powder crystal was obtained. Centrifuge and wash three times with N, N-dimethylformamide and water respectively, the rotation speed is 8000rpm / min, and the centrifugation time is 6min / time, and the obtained product is vacuum-dried at 80°C for 12-16 hours to obtain petals composed of two-dimensional nanosheets with a thickness of 30-60nm spherical t...

Embodiment 3

[0040] Example 3 (Preparation of NiMn-MOFs (nickel chloride hexahydrate: manganese chloride hexahydrate molar mass ratio is 1:0.8))

[0041]Take 0.0660g of manganese chloride hexahydrate, 0.0990g of nickel chloride hexahydrate, and 0.1246g of terephthalic acid and dissolve them in a mixture made of 32mL N,N-dimethylformamide, 2mL ethanol, and 2mL deionized water. In the solution, sonicate at room temperature for 20 min to mix the reactants uniformly to obtain a mixed solution C.

[0042] Transfer the mixed liquid C to a 50mL polytetrafluoroethylene liner, put it into a stainless steel container and keep it warm at 140°C for 48 hours, then cool it down to room temperature for 8 hours, and finally obtain light green solid powder crystals. Centrifuge and wash three times with N, N-dimethylformamide and water respectively, the rotation speed is 8000rpm / min, and the centrifugation time is 6min / time, and the obtained product is vacuum-dried at 80°C for 12-16 hours to obtain two-dime...

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Abstract

The invention belongs to a metal-organic framework material, and discloses a composite nanometer metal-organic framework material which has a spherical three-dimensional nanoflower structure and whichis formed by self-assembling of metal ions and an organic component, and application of the material in super-capacitor performance. A one-step synthesis technique is adopted, and self-assembling ofa terephthalic acid organic ligand, cobalt chloride and nickel chloride in a mixture solution consisting of N,N-dimethyl formamide, ethanol and water is utilized to obtain the metal-organic frameworkspherical nanoflower structure with uniform distribution dimension and size and with a diameter of 7-12 [mu]m. Similar nanometer materials can be synthesized by the method. In addition, the metal-organic framework material has a high number of active sites and has good electrical conductivity, so that the metal-organic framework material has good super-capacitor performance.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation technology and energy storage, and in particular relates to a novel composite spherical three-dimensional nanoflower structure and its energy storage application in the field of supercapacitors. Background technique [0002] With the continuous development of society, higher standards are gradually required for the quality and reliability of energy and power supply. Due to some problems in the traditional power grid, it has not adapted to the trend of social development. Favorable conditions are provided. Supercapacitor is a new type of energy storage device between electrolytic capacitors and batteries. It has the advantages of long cycle life, high current charge and discharge, high discharge power, ultra-large capacity of Farah level, maintenance-free, economical and environmental protection, etc. Therefore, there is a broad space for development in the field of new energy. In terms of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00H01G11/24H01G11/30H01G11/86
CPCC08G83/008H01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 李东升马海萌李双吴亚盘刘云凌兰亚乾张健
Owner CHINA THREE GORGES UNIV
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