Piezoelectric film electricity generator and manufacture method thereof

A technology of piezoelectric film and manufacturing method, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, generators/motors, etc. Problems such as difficulty in production, preparation and integration in the chemical industry, to achieve the effect of simplifying the preparation process, improving production efficiency, and achieving large-scale popularization and application

Active Publication Date: 2014-03-26
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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AI-Extracted Technical Summary

Problems solved by technology

However, this type of generator based on nanowires or their arrays still has great difficulties in preparation and integration. The bottleneck lies in the processes required for the p...
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Method used

A kind of piezoelectric film generator provided by above-mentioned technical scheme and manufacture method thereof, for capturing mechanical energy, has utilized the affinity characteristic of low-melting point metal ink and substrate surface, is prepared for kinetic energy by printing or coating mode The captured piezoelectric power generation device can be directly printed or coated on the surface of house walls, doors, windows, billboards and other substrates. The preparation process can be completed under normal conditions, which reduces the environmental requirements and can significantly simplify the piezoelectric power generation device. The preparation process improves the production efficiency, and can realize the large-scale popular application of the piezoelectric thin film generator. The piezoele...
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Abstract

The invention belongs to the technical field of new energy, and particularly relates to a piezoelectric film electricity generator and a manufacture method thereof. The piezoelectric film energy generator comprises substrates, wherein piezoelectric films are arranged on the substrates; film electrodes are perpendicularly arranged at the two ends of the piezoelectric films respectively; the film electrodes at the two ends of the piezoelectric films are connected to form a closed loop circuit through wires; electric power storing equipment is switched in the closed loop circuit; one sides of the substrates are connected with an external power mechanism; the external power mechanism provides mechanical energy for the substrates; the piezoelectric films are produced by being printed or coated with metal ink with low melting point on the substrates. According to the invention, the affiliation character of the metal ink with low melting point and the surfaces of the substrates is utilized, the piezoelectric electricity generator for capturing kinetic energy is produced through a printing or coating manner; the surfaces of the substrates such as clothes, building walls, doors and windows and advertising boards can be directly printed or coated; the production process can be finished under a normal condition, the requirements on the environment are reduced, and large-scale popularization and application of the piezoelectric film electricity generator can be realized.

Application Domain

Piezoelectric/electrostrictive device manufacture/assemblyPiezoelectric/electrostriction/magnetostriction machines

Technology Topic

Normal conditionsElectricity +10

Image

  • Piezoelectric film electricity generator and manufacture method thereof
  • Piezoelectric film electricity generator and manufacture method thereof
  • Piezoelectric film electricity generator and manufacture method thereof

Examples

  • Experimental program(6)

Example Embodiment

[0044] Example one
[0045] Such as figure 1 In this embodiment, a 1mm thick cotton cloth is selected for the substrate 1; at room temperature, polyvinylidene fluoride (PVDF) piezoelectric polymer nanoparticles with a diameter of 200 nm are added to a 50% by weight containing 0.25wt% gallium oxide In the liquid gallium, a low-melting metal ink with a certain fluidity is made, and then the low-melting metal ink is printed or coated on the surface of the substrate 1 in the form of a line to form a piezoelectric film 2.
[0046] After that, liquid gallium containing 0.25wt% of gallium oxide is printed or coated vertically on the surface of the substrate 1 in the form of lines from the upper and lower ends of the piezoelectric film 2 at room temperature to form the film electrode 3. The film electrodes 3 at both ends of the piezoelectric film 2 are connected by a wire 4 to form a closed loop, and the electrical storage device 5 is connected to the wire 4 of the closed loop to complete the fabrication of the piezoelectric generator of this embodiment. Finally, connect one side of the base 1 to an external power mechanism.

Example Embodiment

[0047] Example two
[0048] Such as figure 1 In this embodiment, a 1mm thick cotton cloth is selected for the substrate 1; the liquid gallium containing 0.25wt% gallium oxide and pure zinc are heated and mixed to form a low melting point alloy metal with a weight ratio of 0.2:0.8 to make a low-melting alloy metal with a certain fluidity. Melting point metal ink, then the low melting point metal ink is printed or coated on the surface of the substrate 1 in the form of a line to form an alloy film (because it is an intermediate product, figure 2 (Not marked above); after that, move the alloy film coated with low melting point alloy ink together with the substrate 1 into a well-sealed oxygen cylinder, heat up to 200°C or higher, and keep it for 3 hours or longer. After being oxidized, the zinc oxide in it has a piezoelectric effect, thereby forming a piezoelectric film 2; this oxidation process can also be achieved by heating by microwave, radio frequency, laser, etc.
[0049] Further, liquid gallium containing 0.25wt% of gallium oxide is printed or coated on the surface of the substrate 1 vertically in the form of lines from the upper and lower ends of the piezoelectric film 2 at room temperature to form the film electrode 3; the piezoelectric film 2 The thin film electrodes 3 at both ends are connected by a wire 4 to form a closed loop, and the electrical storage device 5 is connected to the wire 4 of the closed loop to complete the fabrication of the piezoelectric generator of this embodiment. Finally, connect one side of the base 1 to an external power mechanism.

Example Embodiment

[0050] Example three
[0051] Such as figure 2 Different from Embodiment 1 and Embodiment 2, the piezoelectric generator of this embodiment is not only composed of one piezoelectric conversion circuit, but is composed of a combination of a plurality of piezoelectric films arranged in a row. In this way, a larger amount of electric energy can be obtained, which is more suitable for actual demand.
[0052] Substrate 1 is made of 1mm thick polyester cloth; at room temperature, polyvinylidene fluoride (PVDF) piezoelectric polymer nanoparticles with a diameter of 200nm are added to liquid gallium containing 0.25wt% gallium oxide at a weight ratio of 50%, A low-melting metal ink with a certain fluidity is made, and then the low-melting metal ink is printed or coated on the surface of the substrate 1 in the form of a line, and then 100 parallel piezoelectric films 2 are repeatedly printed at a certain interval. In this way, an aligned piezoelectric film is formed.
[0053] Then, at room temperature, liquid gallium containing 0.25wt% gallium oxide is vertically printed or coated on the surface of the substrate 1 from the upper and lower ends of the entire row of piezoelectric films in the form of lines to form the film electrodes 3; The thin film electrodes 3 at both ends of the thin film 2 are connected by wires 4 to form a closed loop, and the electrical storage device 5 is connected to the wires 4 of the closed loop to complete the fabrication of the array piezoelectric generator of this embodiment. Finally, connect one side of the base 1 to an external power mechanism.

PUM

PropertyMeasurementUnit
Diameter200.0nm

Description & Claims & Application Information

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