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Air interval type friction nanometer generator

A nano-generator and air-spacer technology, applied in the fields of textile, micro-nano technology and electronics, can solve the problems of limited service life of springs, affecting the flexibility of devices, and reducing the effective area of ​​upper and lower friction surfaces, so as to improve service life and stability. , the effect of increasing the effective contact area and improving the electrical output performance

Inactive Publication Date: 2018-02-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the structure of the existing contact-separation frictional nanogenerator is not perfect, and springs or other rigid elastic materials and elastic sponges are often used as the intermediate support structure to realize the friction surface of the frictional nanogenerator structure. Contact and separation to achieve energy conversion and collection
Although this structure can realize the contact and separation of the upper and lower friction surfaces under the action of external force, the use of rigid bodies such as springs seriously affects the flexibility of the device, which severely limits the application of triboelectric nanopower generation devices in the flexible and wearable field.
Secondly, due to the limited service life of devices such as springs, which are in point contact with the upper and lower friction surfaces, long-term compression and release will seriously affect the stability and service life of the triboelectric nanogenerator.
Thirdly, because the use of small devices such as springs occupies a certain area, the effective area of ​​the upper and lower friction surfaces is reduced when they are in contact.

Method used

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  • Air interval type friction nanometer generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1. TPE is selected as the external high elastic material, which is synthesized from PP, compatibilizer, antioxidant, dispersant and the like. Use PTFE film (8*8cm 2 , thickness 0.4cm) and PA film (8*8cm 2 , thickness 0.4cm) were used as the first friction layer and the second friction layer, and copper foil was adhered to the back of the two materials as the electrode material. Then stick it on the inner surface of TPE, and seal the edge with hot pressing, pay attention to keep a certain amount of air inside, and ensure that the first friction layer and the second friction layer are facing each other up and down after sealing. Under the action of an external force of 60N, the first friction layer and the second friction layer come into contact and separate, and the output voltage can reach 300V, and the output voltage does not attenuate significantly after 10,000 cycles of testing.

Embodiment 2

[0018] Embodiment 2. select PVC as external material for use, select PDMS film (8*8cm for use) 2 , thickness 0.4mm) and PA plain fabric (8*8cm 2 , The total fabric density 100T—refers to the total number of warp yarns and weft yarns per unit length (1 inch) is 100) as the first friction layer and the second friction layer respectively. The electrode material of the PDMS film is copper, and considering the adhesion between the fabric and the electrode, the conductive silver paste with good affinity with the fabric is selected as the raw material, and the screen printing method is used to coat the back of the PA fabric, and then on the surface of the PA fabric. Dry in an oven at 120°C for 2 hours to form a silver electrode. Then paste the two friction layers with the electrode layer on the inner surface of the PVC sealing structure respectively, and seal it with hot pressing, pay attention to keep a certain amount of air inside, and ensure that the first friction layer and the ...

Embodiment 3

[0019] Embodiment 3. directly select commercially available PVC film to make tubular thing as external support material, select PA plain weave fabric (8*8cm 2 , total fabric density 240T) and PTFE film (8*8cm 2 , thickness 0.4mm) as the first friction layer and the second friction layer. The silver paste with good adhesion to the fabric was selected as the electrode material, and the silver paste was coated on the back of the fabric by screen printing, and baked at 120°C for 2 hours to form a uniform silver electrode with extremely low resistivity. Copper foil is selected as the electrode of PTFE film. Adhere the two friction layers with the electrodes attached to the upper and lower layers of the inner surface of the PVC tube respectively, fill in a certain amount of air and seal it. After sealing, ensure that the first friction layer and the second friction layer are facing each other up and down. Under the action of an external force of 60N, the first friction layer and t...

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Abstract

The invention relates to an air interval type friction nanometer generator. The air interval type friction nanometer generator comprises a first friction layer, a second friction layer and a sealing structure prepared from an elastic material; an upper electrode material is fixed on the upper part of the inner surface of the sealing structure while a lower electrode material is fixed on the lowerpart; the back surface of the first friction layer is adhered to the upper electrode material; the back surface of the second friction layer is adhered to the lower electrode material; air is reservedbetween the first friction layer and the second friction layer; when external force is applied to the sealing structure, the first friction layer and the second friction layer are in mutual contact;and when the external force is released, the first friction layer and the second friction layer are separated. The service life and stability of the air interval type friction nanometer generator canbe prolonged and improved.

Description

technical field [0001] The invention relates to the fields of textile, micro-nano technology and electronic technology, in particular to an air-spaced friction nanometer generator. Background technique [0002] Frictional nanogenerators meet the development needs of miniaturization of electronic devices and smart wearable textiles, and at the same time have high work efficiency and have broad development prospects. Triboelectric nanogenerators can be divided into contact-separation type, sliding friction type, free movement type and single electrode type according to their different working modes. The contact-separation method has attracted the attention of relevant researchers because of its advantages of simple preparation and high energy conversion efficiency. [0003] However, the structure of the existing contact-separation frictional nanogenerator is not perfect, and springs or other rigid elastic materials and elastic sponges are often used as the intermediate suppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04
CPCH02N1/04
Inventor 郭建生张志朱婧婧焦凤双贾浩陈荧李妮
Owner DONGHUA UNIV
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