A flexible stretchable single-electrode triboelectric nanogenerator and a manufacturing method thereof

A technology of nanogenerators and flexible electrode layers, applied in the direction of triboelectric generators, etc., can solve the problems that nanofibers do not have stretchability, affect the output performance of triboelectric nanogenerators, limit the application value of flexible and wearable fields, etc., and achieve strong Adaptive shape, simple and light structure, and the effect of ensuring output stability

Active Publication Date: 2019-04-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanofibers are easily peeled off from the electrodes during the long-term use of the device, which seriously affects the output performance of triboelectric nanogenerators, and nanofibers are generally not stretchable, which greatly limits their application in the flexible and wearable field. Practical application value

Method used

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  • A flexible stretchable single-electrode triboelectric nanogenerator and a manufacturing method thereof
  • A flexible stretchable single-electrode triboelectric nanogenerator and a manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: Dilute the graphene oxide aqueous solution with an appropriate amount of deionized water, cast and drop it on a 200% pre-stretched 3M-VHB elastomer support film, and dry it in a blast oven to form a graphene oxide composite film.

[0038] Step 2: exposing the composite film obtained in step 1 to hydrogen iodide vapor, and reducing to obtain a conductive graphene composite film.

[0039] Step 3: Dissolve PVDF in an appropriate amount of DMF+acetone mixed solvent (6:4), stir magnetically for a period of time until it is completely dissolved, and obtain a polymer PVDF spinning solution.

[0040] Step 4: Use the conductive graphene composite film as the receiving electrode, control the electrospinning operating parameters as voltage 10kV, receiving distance 20cm, temperature 30±5°C, humidity 30±5%, and propulsion speed 0.01mL / min etc. to obtain PVDF nanofibrous membranes.

[0041] Step 6: release the pre-stretching stress, put the composite membrane into a blast ov...

Embodiment 2

[0044] Step 1: Coating gold on the 200% pre-stretched 3M-VHB elastomer support film to obtain a conductive gold composite film.

[0045] Step 2: PET is dissolved in an appropriate amount of dichloromethane + trifluoroacetic acid mixed solvent (1:4), and magnetically stirred for a period of time until it is completely dissolved to obtain a polymer PET spinning solution.

[0046] Step 3: Use the conductive gold composite film as the receiving electrode, control the electrospinning operating parameters as voltage 12kV, receiving distance 18cm, temperature 30±5°C, humidity 30±5%, advance speed 0.01mL / min, etc. , to obtain PET nanofiber membrane.

[0047] Step 4: Release the pre-stretching stress, put the composite film into a blast oven at 160°C for heat treatment, and obtain a wrinkled triboelectric nanogenerator.

[0048] The results show that the output performance of the nanogenerator reaches 50V in the original state, and 160V under the condition of 150% tension (the pressin...

Embodiment 3

[0050]The flexible and stretchable single-electrode triboelectric nanogenerators of Examples 1 and 2 can not only be used to collect mechanical energy, but can also be attached to the skin surface at different positions of the human body. The movement of the human body, the triboelectric nanogenerator performs friction and stretches deformation at the same time, which can be used to monitor the information of human movement in real time, such as the amplitude of the movement.

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Abstract

A flexible stretchable single-electrode triboelectric nanogenerator and a manufacturing method thereof belong to the field of nanometer new energy. The pleated triboelectric nanogenerator is composedof three parts including a nanofiber friction material layer, a flexible electrode layer and an elastomer support layer which are sequentially stacked. The electrospinning technique is used to cover the nanofiber layer on a pre-stretched substrate on which flexible electrodes are deposited. By releasing the pre-tensile stress and a short heat treatment process, the pleated triboelectric nanogenerator having a stable output can be prepared. The nano-generator involves a simple operation process, and the prepared nano-generator has excellent tensile properties, and provides more options for human wearable self-powered devices.

Description

technical field [0001] The invention belongs to the field of nano new energy, and in particular relates to a novel flexible and stretchable single-electrode friction nano generator and a preparation method thereof. Background technique [0002] Triboelectricity is the most common phenomenon in nature, whether it is combing hair, dressing, walking or driving. However, triboelectricity is difficult to collect and utilize, so it is often ignored by people. [0003] The principle of triboelectric nanogenerator is based on the coupling effect of triboelectrification and electrostatic induction. Usually, when two materials come into contact with each other, chemical bonds are formed at some part of the interface, and charges are transferred between the interfaces to balance the electrochemical potential, resulting in triboelectric charges. Driven by an external force, the triboelectrically charged interfaces move with each other, resulting in a periodic change in the potential d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04
CPCH02N1/04
Inventor 潘凯秦臻吕玉环
Owner BEIJING UNIV OF CHEM TECH
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