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A method for fabricating flexible friction-piezoelectric hybrid energy harvesters by micro-stereolithography

A technology of stereolithography and piezoelectric composite, applied in the direction of triboelectric generator, piezoelectric/electrostrictive/magnetostrictive device, piezoelectric effect/electrostrictive or magnetostrictive motor, etc. Frictional energy harvester, inability to combine triboelectricity and piezoelectric effect, poor machinability and other problems, achieve good application prospects, improve potential difference, and large output performance

Active Publication Date: 2020-07-28
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] There is still no good structural processing technology for piezoelectric ceramics, and piezoelectric ceramic energy harvesters cannot meet the flexible action mode of contact separation required by friction energy harvesters due to poor machinability, and cannot charge friction Organic compound with piezoelectric effect

Method used

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  • A method for fabricating flexible friction-piezoelectric hybrid energy harvesters by micro-stereolithography
  • A method for fabricating flexible friction-piezoelectric hybrid energy harvesters by micro-stereolithography
  • A method for fabricating flexible friction-piezoelectric hybrid energy harvesters by micro-stereolithography

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] A method for preparing a flexible friction-piezoelectric composite energy harvester by micro-stereolithography, comprising the following steps:

[0026] The first step, the dispersion of the piezoelectric material: disperse the piezoelectric material into an organic solvent, stir it with a magnetic stirrer at room temperature for 60 minutes, and then use an ultrasonic cleaner for 20 minutes to make it evenly dispersed;

[0027] Piezoelectric materials are piezoelectric ceramics such as boron nitride nanotubes, boron nitride nanosheets, barium titanate or lead zirconate titanate; organic solvents are N,N-dimethylformamide, N-methylpyrrolidone or dimethyl Acetamide;

[0028] The second step, the preparation of the piezoelectric photosensitive resin 2: mix the homogeneously dispersed solution in the first step with the flexible photosensitive resin in a certain ...

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Abstract

A method for preparing flexible tribo-piezoelectric composite energy harvesters by micro-stereolithography, the dispersion of advanced piezoelectric materials, and then the preparation of piezoelectric photosensitive resins, and then the preparation of microstructured wave-shaped piezoelectric energy harvesters , the piezoelectric photosensitive resin is irradiated with ultraviolet light, and the microstructure wavy piezoelectric film is prepared by using the micro three-dimensional curing process. The substrate, the upper and lower metal electrodes are connected to the power supply, and thermally polarized in an oven. After the oven is cooled to room temperature, the voltage is removed to obtain a microstructure wave-shaped piezoelectric energy harvester; finally, a flexible friction-piezoelectric composite energy harvester is performed. The preparation of the microstructure wave-shaped piezoelectric energy harvester is placed on the conductive substrate with friction material to form a flexible friction-piezoelectric composite energy harvester; the invention has simple process, low cost, and greatly improves the output of the energy harvester performance.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a method for preparing a flexible friction-piezoelectric composite energy harvester by micro-stereolithography. Background technique [0002] Mechanical energy is a kind of renewable and reusable energy, because it can widely exist in the surrounding environment in different forms, such as: wind energy, water energy, energy generated by human motion, mechanical vibration, but most mechanical energy and not being fully utilized. In recent years, many scholars have devoted themselves to effectively converting mechanical energy into electrical energy, and thus invented piezoelectric energy harvesters and friction energy harvesters. Among them, piezoelectric materials can generate voltage under the action of force, so piezoelectric devices are widely used in intelligent sensing, wearable devices, energy recovery and other fields. However, due to its sma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/04H02N2/00H01L41/332
CPCH02N1/04H02N2/22H10N30/082
Inventor 陈小明叶世博邵金友李祥明田洪淼陈小亮王春慧
Owner XI AN JIAOTONG UNIV
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