Preparation method of MOF/MXene/PPy-CelF porous nano-material, and product and application of MOF/MXene/PPy-CelF porous nano-material

Abstract

The invention discloses a preparation method of an MOF / MXene / PPy-CelF porous nanomaterial. The preparation method comprises the following steps: S1, preparing an MXene material, an MOF material and a PPy-CelF material; preparing an MXene solution by adopting an HF acid etching method; the preparation method comprises the following steps: preparing a PCN-222 precursor solution from benzoic acid, a porphyrin ligand, zirconium chloride and N, N-diethyl formamide; preparing a PPy-CelF solution by adopting an in-situ polymerization method; s2, preparing an MXene / PCN-222 composite material; preparing an MXene film by an electrophoretic deposition method; a PCN-222 layer is prepared on the MXene film through a rapid electrophoretic deposition technology, and an MXene / PCN-222 double-layer composite film is obtained; and S3, preparing the MOF / MXene / PPy-CelF porous nano material by a dip-coating method. The invention further discloses a corresponding product and application. According to the invention, the MOF material, the MXene and the polymer are compounded in a layered manner, so that the MXene is not stacked, ion transmission is ensured, and the nano composite material has very high reaction active sites and flexibility.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of MOF / MXene / PPy@CelF porous nanomaterials and its products and applications. Background technique [0002] Miniaturized and wearable electronic devices require energy storage systems with both flexibility and excellent electrochemical performance. It is very attractive to design traditional energy storage devices such as supercapacitors into flexible structures to power these wearable devices. Electrode materials are an important part of flexible supercapacitors, which must possess electrochemical activity, mechanical strength, and even stretchability during use. There has been a shift in focus from traditional materials such as metal oxides and carbon materials to intrinsically flexible elastomeric polymers. The new two-dimensional material MXene can synergize with three-dimensional polymer network to enhance electrochemical activity and...

AI Technical Summary

Problems solved by technology

[0003]Although MXene materials show great promise in the field of energy storage, they are prone to self-aggregation and stacking due to size effects

In the existing technology, the in-situ method is usually used to insert inorganic metal ions and organic molecules between the two-dimensional nanomaterial sheets, or to combine MXene materials with polymer molecules, CNTs, etc. to reduce the self-aggregation of the nanosheets and increase the activity. The number of reaction centers and increase the transport rate of electrolyte ions in the electrode material, but as the thickness of the electrode material increases, the ion transport rate will decrease exponentially

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