Bionic degradable friction nano-generator and preparation method thereof

A nano-generator, friction material technology, applied in the direction of friction generator, wind energy power generation, ocean energy power generation, etc., can solve the problems of non-conformity, poor material degradability, high preparation cost, and achieve good flexibility and friction performance, preparation The effect of improved efficiency and simple preparation process

Pending Publication Date: 2022-05-24
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the material point of view, the traditional positive and negative electrode materials for triboelectric nanogenerators are mainly synthetic polymer materials, such as nylon, polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS) and polyparaphenylene. Ethylene glycol diformate (PET), etc., although the electrical output performance of such materials meets the requirements, the degradability of the materials is poor, and their wide use will cause a burden to the environment, and the preparation costs of such materials are relatively high, which does not meet the current requirements. Sustainable Development Route Requirements
[0005] Based on the above problems, friction nanogenerators based on bionic degradable materials have emerged. For example, Chinese patent CN 112593436 A discloses a method for preparing sisal fiber paper-based friction nanogenerators, which uses sisal fibers to extract cellulose to generate Preparation of positive electrode materials for generators has low raw material costs and significantly improved environmental protection, but the triboelectric negative materials used in the generators are still traditional materials, and the maximum short-circuit current of the finished products is still relatively low, and the power transmission performance still depends on Further improvement; at the same time, the generator preparation steps disclosed in this scheme are still relatively cumbersome, and there are certain deficiencies in the preparation efficiency

Method used

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  • Bionic degradable friction nano-generator and preparation method thereof
  • Bionic degradable friction nano-generator and preparation method thereof
  • Bionic degradable friction nano-generator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. Preparation of a biomimetic degradable triboelectric nanogenerator

[0031] Cut the bamboo into 1mm, 2mm, 3mm, and 4mm thick slices respectively, and then splicing these slices of different thicknesses into 5cm×5cm squares, using them as the negative electrode friction material and the aluminum film as the positive electrode friction material to make a simple Triboelectric nanogenerators, compared with their open circuit voltages, found that 2mm thick bamboo flakes performed better.

[0032] bamboo thickness 1mm 2mm 3mm 4mm 5mm Open circuit voltage 60V 80V 65V 50V 20V

[0033] Therefore, in the present embodiment, a 2mm thick sheet is selected to carry out the follow-up test, and the specific process is as follows:

[0034] 1) Cut the bamboo into 2mm thick slices, and then cut the slices into 5mm wide strips;

[0035] 2) Weaving the thin strips of bamboo fibers into a 10cm×10cm bamboo fiber cloth by using a plain weave meth...

Embodiment 2

[0045] Example 2. Preparation of a biomimetic degradable triboelectric nanogenerator

[0046] The difference between the second embodiment and the first embodiment is that the size of the prepared bamboo fiber cloth positive electrode material and the cotton cloth negative electrode material is 8cm×8cm, and the remaining conditions are the same as those in the first embodiment, and the sizes of the positive and negative electrode friction materials are different. , will cause the difference in friction area, and then the power generation performance of the triboelectric nanogenerator will also change. After testing, the maximum open circuit voltage and maximum output power of the triboelectric nanogenerator under this size are 133V and 1.8mW, respectively.

Embodiment 3

[0047] Embodiment 3. Preparation of a biomimetic degradable triboelectric nanogenerator

[0048] The difference between Embodiment 3 and Embodiment 1 is that the size of the prepared bamboo fiber cloth positive electrode material and cotton cloth negative electrode material is 5cm×5cm, and the remaining conditions are the same as those in Embodiment 1. After testing, the friction under this size is the same. The maximum open circuit voltage of the nanogenerator is 100V.

[0049] The following table lists the maximum open circuit voltage of the triboelectric nanogenerators prepared in the three examples. It can be intuitively known from the table that the size of the bamboo fiber cloth positive electrode material and the cotton cloth negative electrode material is 10cm×10cm. The maximum open circuit voltage of the machine is the highest, which also proves that the difference in the friction area will cause the electrical performance to change significantly.

[0050] ...

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Abstract

The invention discloses a bionic degradable friction nano-generator and a preparation method thereof, the friction nano-generator uses woven bamboo fiber cloth as a positive friction material and cotton cloth as a negative friction material, the two friction materials are contacted and separated, and the friction electricity generation effect and electrostatic induction are utilized to generate alternating current to realize power generation. Bamboo fibers are degradable and low in cost, have good flexibility and friction performance, can still keep good performance under the action of certain bending and torsion, and are beneficial for improving the power transmission performance of products. The friction nanometer generator disclosed by the invention is simple in preparation process, and the preparation efficiency is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of triboelectric nanometer power generation, and in particular relates to a bionic and degradable triboelectric nanometer generator and a preparation method thereof. Background technique [0002] At present, all countries in the world are generally facing the problem of depletion of traditional energy in their territory, and there is an urgent need for the development and utilization of new energy. Although new energy has the advantages of being renewable and clean, new energy such as wind energy, mechanical energy, and tidal energy are intermittent and uncontrollable, so they need to be collected and converted before use. [0003] Triboelectric Nanogenerator (TENG) is a new type of power generation equipment born in the context of this era. Its appearance has brought new ideas to the development of new energy in the world. TENG has positive and negative polarities. The friction material is rubbed or contac...

Claims

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Application Information

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IPC IPC(8): H02N1/04
CPCH02N1/04Y02E10/72
Inventor 简刚朱尚涛王锋伟欧阳春
Owner JIANGSU UNIV OF SCI & TECH
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