Preparation method of multifunctional all-fiber-based piezoelectric nano generator

A nanogenerator, full fiber technology, applied in generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, fiber processing, etc., can solve the problem of increasing the overall thickness of piezoelectric nanogenerator, hindering pressure Electric nanogenerators are widely used, and the air permeability of the device is reduced, so as to achieve the effects of excellent antibacterial performance, stable antibacterial performance and good air permeability.

Pending Publication Date: 2022-08-09
XI'AN POLYTECHNIC UNIVERSITY
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  • Application Information

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Problems solved by technology

Literature "Hierarchically architected polydopamine modified BaTiO 3 @P(VDF-TrFE)nanocomposite fiber mats for flexible piezoelectric nanogenerators and self-powered sensors" mentioned that polyimide is used to encapsulate piezoelectric nanogenerators, but the original electrospun nanofiber membrane has a hierarchical porous structure It shows good air permeability, but the use of polyimide packaging will cause a sharp drop in the air permeability of the entire device
In addition, the use of conductive fabrics as electrodes will also increase the overall thickness of the piezoelectric nanogenerator, resulting in a series of problems such as inconvenient use.
Relatively little research has been done on improving comfort, durability, and health, which also hinders the widespread application of piezoelectric nanogenerators in practical applications.

Method used

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  • Preparation method of multifunctional all-fiber-based piezoelectric nano generator
  • Preparation method of multifunctional all-fiber-based piezoelectric nano generator
  • Preparation method of multifunctional all-fiber-based piezoelectric nano generator

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preparation example Construction

[0028] The invention provides a preparation method (method for short) of a multifunctional full-fiber-based piezoelectric nanogenerator, which is characterized in that the method comprises the following steps:

[0029] Step 1. Mix piezoelectric polymer, antibacterial nanoparticles and piezoelectric polymer solvent to form a mixture of piezoelectric polymer / antibacterial nanoparticles; then use the mixture of piezoelectric polymer / antibacterial nanoparticles as spinning liquid, using the electrostatic direct writing method to prepare the electrostatic direct writing nanofiber membrane with the fibers arranged in an orderly manner;

[0030] Preferably, in step 1, the piezoelectric polymer is PVDF-HFP (polyvinylidene fluoride-hexafluoropropylene) or PAN, the antibacterial nanoparticles are ZnO or silver nanowires, and the piezoelectric polymer solvent is N,N- A mixed solvent of dimethylformamide and acetone;

[0031] When the piezoelectric polymer adopts PVDF-HFP, the specific p...

Embodiment 1

[0054] (1) Dissolve 1g of PVDF-HFP powder in a mixed solvent of 4.3g of N,N-dimethylformamide and 1.843g of acetone at room temperature, stir magnetically at 60°C for 6h under sealed conditions, and heat After finishing, let stand to remove air bubbles to obtain PVDF-HFP solution; at room temperature, add 0.57g ZnO nanoparticles, and ultrasonically for 12 hours at room temperature to obtain a PVDF-HFP / ZnO mixed solution, that is, a spinning solution, in which the PVDF-HFP concentration is 14wt %, the mass of ZnO is 57% of that of PVDF-HFP;

[0055] Then, the syringe containing the mixture of PVDF-HFP / ZnO was fixed in the syringe pump of the electrostatic direct writing device, the flow rate of the spinning solution was 0.1ml / h, the spinning voltage was 3.8kV, the spinning distance was 0.5cm, and the environment The relative humidity is 60±5%; the drying temperature is 85°C, the drying time is 5h, and electrostatic direct writing is performed at room temperature to obtain the e...

Embodiment 2

[0070] (1) Dissolve 1g of PVDF-HFP powder in a mixed solvent of 4.3g of N,N-dimethylformamide and 1.843g of acetone at room temperature, stir magnetically at 60°C for 6h under sealed conditions, and heat After finishing, let stand to remove air bubbles to obtain PVDF-HFP solution; at room temperature, add 0.57g ZnO nanoparticles, and ultrasonically for 12 hours at room temperature to obtain a PVDF-HFP / ZnO mixed solution, that is, a spinning solution, in which the PVDF-HFP concentration is 14wt %, the mass of ZnO is 57% of that of PVDF-HFP;

[0071] Then, the syringe containing the mixture of PVDF-HFP / ZnO was fixed in the syringe pump of the electrostatic direct writing device, the flow rate of the spinning solution was 0.1ml / h, the spinning voltage was 3.8kV, the spinning distance was 0.5cm, and the environment The relative humidity is 60±5%; the drying temperature is 85°C, the drying time is 5h, and electrostatic direct writing is performed at room temperature to obtain the e...

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Abstract

The invention discloses a preparation method of a multifunctional all-fiber-based piezoelectric nano-generator, which comprises the following steps: preparing an electrostatic direct-writing nano-fiber membrane by using an electrostatic direct-writing method, and then plating a conductive film on one side and carrying out single-side super-hydrophobic treatment; and then compounding with an electrostatic spinning nanofiber membrane to prepare the all-fiber-based piezoelectric nanogenerator. The nanofibers which are orderly arranged in the electrostatic direct-writing nanofiber membrane form certain pores, so that the electrostatic direct-writing nanofiber membrane has good air permeability. The conductive film is plated on the single side, so that the electricity conduction of the generator is realized, the packaging step of the traditional piezoelectric nano generator is avoided, and the good air permeability and comfort are ensured. The single-side super-hydrophobic treatment reaches a super-hydrophobic state, so that the piezoelectric nano generator is not easily interfered by external moisture in the use process, the external moisture is ensured not to easily enter the piezoelectric nano generator, the stable output performance is maintained, and meanwhile, water drops rolling on the surface of the generator can take away dust on the surface through the super-hydrophobic treatment, so that the power generation efficiency is improved. And therefore, a relatively clean state is kept.

Description

technical field [0001] The invention relates to the field of intelligent textiles, in particular to a preparation method of a multifunctional full-fiber-based piezoelectric nanogenerator. Background technique [0002] In order to cope with the energy crisis and environmental pollution and other issues, developing more effective lightweight, sustainable and renewable energy sources from daily life has become a research hotspot. In the past, a lot of research work has been carried out to develop more environmentally friendly energy conversion systems. Among numerous energy conversion systems, piezoelectric nanogenerators have successfully attracted attention by utilizing the piezoelectric effect to convert various mechanical energies, such as jumping and walking, into electrical energy. Due to its light weight, low cost, convenient processing and high energy conversion efficiency, it is widely used in the field of smart wearables. [0003] More demands are being placed on th...

Claims

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Application Information

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IPC IPC(8): H02N2/00D01D5/00D04H1/74D04H1/4318D04H1/43B82Y40/00
CPCH02N2/22D01D5/003D04H1/74D04H1/4318D04H1/43B82Y40/00
Inventor 樊威张聪刘泱刘红霞张雨晗刘彤王琪
Owner XI'AN POLYTECHNIC UNIVERSITY
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