Controllable preparation method based on covalent organic framework and energy storage application thereof

A technology of covalent organic framework and covalent organic framework, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of inability to precisely control the morphology and size of COFs materials, and the inability to give full play to the advantages of microstructure, so as to improve the morphology and shape of amorphous materials. Uncontrollable effects of the growth process
CN110483799AActive Publication Date: 2019-11-22LANZHOU JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LANZHOU JIAOTONG UNIV
Publication Date
2019-11-22

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Abstract

The invention provides a controllable preparation method based on a covalent organic framework and an energy storage application thereof. A covalent organic framework COFs material connected with beta-ketoamide is employed as a main material, and successful introduction of an energy storage component in the COFs material and effective control of the microstructure are realized by designing a topological structure of the COFs material and selecting a polymerization monomer prepolymerization environment of the COFs material; wherein anthraquinone molecules are used as an energy storage component, so that the COFs material can show obvious electrochemical energy storage activity; meanwhile, directional growth of the COFs material in different dimensions is achieved through mechanical grindingand the double induction effect of different reaction solvents in the organic framework unit molecule prepolymerization process, and finally the covalent organic crystal material G-S-COFs energy storage material with the rod cluster-shaped microstructure is obtained. Then, through a solvent-process polymerization step, the flower-shaped covalent organic crystal material C-S-COFs composed of nanosheets can be finally prepared. The method has the advantages that on the basis that the energy storage activity of the COFs material is guaranteed, the defects that the morphology of the COFs materialis amorphous and the growth process is uncontrollable under the solvothermal condition are effectively overcome.
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Description

technical field

[0001] The invention belongs to the technical field of functional materials, and in particular relates to a controllable preparation method based on covalent organic frameworks (COFs) and its energy storage application as a supercapacitor electrode material. Background technique

[0002] COFs are a class of porous polymer materials with a periodic crystalline network framework structure formed by dynamic covalent chemical polymerization of light elements (hydrogen, boron, carbon, nitrogen, etc.). Since Professor Yaghi's research group successfully synthesized COFs materials for the first time in 2005, due to their great potential in structural characteristics and performance development, they have aroused strong research interest in the academic community and have been widely used in gas storage and separation, optoelectronic materials , catalysis and energy storage and other fields.

[0003] Thanks to the ordered arrangement of structural units at the molec...

Claims

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