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Preparation method of compact and ordered self-supporting mofs electrodes

A self-supporting and electrode technology, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, can solve the problems of low performance of MOFs electrodes and complicated preparation methods, and achieve smooth electron transfer process, high performance and good performance. Effect

Active Publication Date: 2022-03-25
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for preparing compact and ordered self-supporting MOFs electrodes, which solves the technical problems of low performance and complex preparation methods of MOFs electrodes prepared in the prior art

Method used

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  • Preparation method of compact and ordered self-supporting mofs electrodes
  • Preparation method of compact and ordered self-supporting mofs electrodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of the compact and ordered self-supporting MOFs electrode of the present invention, the specific implementation process is as follows:

[0033] S1. Compress the polytetrafluoroethylene mask plate on the flexible PE film, spin-coat polystyrene microsphere aqueous solution, the number of spin-coating is 2-5 times; dry at a temperature of 60°C, and the drying time For 0.5~2h, a polystyrene microsphere film with an interdigitated structure is obtained, which is recorded as film A; the thickness of film A is determined according to the number of spin coatings and the concentration of the polystyrene microsphere aqueous solution. In this embodiment, the particle size of the polystyrene microsphere aqueous solution is 500nm~2um, the molar concentration is 1~2.5%, and the thickness of the film A is 10~100μm.

[0034] The thickness of the interdigitated fingers can be easily increased by the number of spin coatings. The number of spin coatings and the conc...

Embodiment 2

[0043] The only difference from Example 1 is that the present invention provides a micro supercapacitor with compact and ordered self-supporting MOFs electrodes, and the electrodes are self-supporting MOFs electrodes. Since the self-supporting MOFs electrode does not use an adhesive in the preparation process, compared to mixing MOFs materials with an adhesive, the resistance of the electrode is small, the electron transfer process is smooth, and the performance of the MOFs electrode is high. Therefore, the micro supercapacitor The performance is good.

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Abstract

The invention relates to the technical field of electrode preparation, in particular to a method for preparing a compact and ordered self-supporting MOFs electrode, wherein the method includes: compressing a polytetrafluoroethylene mask plate on a flexible PE film to obtain a film A; using a spraying method Spray 1~2ml of solution A onto film A to obtain film B; spray 1~2ml of solution B onto film B by spraying to obtain film C; place film C in a fume hood for heating; place film C in a vacuum kept at 60°C for 24 hours to obtain interdigital electrode A; soak interdigital electrode A with deionized water and ethanol, wash 2-3 times, and remove ethanol; place interdigital electrode A in dichloromethane solution , dissolving polystyrene microspheres and PE film to obtain self-supporting MOFs electrodes. The invention does not increase the resistance of the electrode, does not hinder the transfer of electrons, improves the performance of the MOFs electrode, and solves the technical problems of low performance and complicated preparation methods of the MOFs electrode prepared in the prior art.

Description

technical field [0001] The invention relates to the technical field of electrode preparation, in particular to a method for preparing compact and ordered self-supporting MOFs electrodes. Background technique [0002] Supercapacitor is a new type of energy storage device. Compared with batteries, it has the advantages of high specific power, long cycle life and fast charge and discharge speed, and is increasingly widely used. Metal-organic frameworks (MOFs) are crystalline porous materials with a periodic network structure formed by inorganic metal centers (metal ions or metal clusters) and bridging organic ligands connected to each other through self-assembly. MOFs also have inorganic materials The rigid and flexible characteristics of organic materials. With the characteristics of large specific surface area, large pore volume and adjustable pores, it is an ideal material for preparing supercapacitors. [0003] For example, Chinese patent CN109019786A discloses a method f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/24
CPCH01G11/86H01G11/30H01G11/24Y02E60/13
Inventor 杨文耀程正富伏春平夏继宏张晓宇李毅徐建华杨邦朝
Owner CHONGQING UNIV OF ARTS & SCI