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Polyvinyl alcohol/sodium alginate hydrogel for single-electrode triboelectric nanogenerator and preparation method thereof

A nanogenerator and polyvinyl alcohol technology, applied in the direction of triboelectric generators, etc., can solve the problems of poor transparency of the triboelectric generator, unfavorable application of the triboelectric nanogenerator, etc., and achieve good transparency, stable electric energy, and preparation method. simple effect

Active Publication Date: 2021-06-22
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transparency and flexibility of materials currently used for triboelectric nanogenerators are poor, which is not conducive to the application of triboelectric nanogenerators in some special environments

Method used

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  • Polyvinyl alcohol/sodium alginate hydrogel for single-electrode triboelectric nanogenerator and preparation method thereof

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Embodiment 1

[0035] The invention provides a polyvinyl alcohol / sodium alginate hydrogel for a single-electrode friction nanogenerator and a preparation method thereof, wherein the specific preparation steps of the polyvinyl alcohol / sodium alginate hydrogel are as follows:

[0036] S1. Weigh 1.2g polyvinyl alcohol and dissolve it in 20mL deionized water to prepare a 6% polyvinyl alcohol solution.

[0037] S2. Add 24 mg of sodium alginate to the polyvinyl alcohol solution in step S1 and fully dissolve it to obtain a polyvinyl alcohol / sodium alginate solution;

[0038] S3. take by weighing 600g sodium borate and be dissolved in 10mL deionized water and be mixed with 6% sodium borate solution;

[0039] S4. Mix the polyvinyl alcohol / sodium alginate solution and the sodium borate solution at a ratio of 4:1, cast it into a 3mm film, and form a polyvinyl alcohol / sodium alginate hydrogel at room temperature.

[0040] The negative electrode material of the single-electrode triboelectric nanogenerat...

Embodiment 2

[0046] The preparation method of this embodiment refers to Example 1, and the difference from Example 1 is: the sodium alginate added in step S2 is 12g; the mixing ratio of polyvinyl alcohol / sodium alginate solution and sodium borate solution in step S4 is 3: 1; the crosslinking time in step Y2 is 3 hours.

Embodiment 3

[0048] The preparation method of this embodiment refers to Example 1, and the difference from Example 1 is: the sodium alginate added in step S2 is 36g; the mixing ratio of polyvinyl alcohol / sodium alginate solution and sodium borate solution in step S4 is 5: 1; The coaching time in step Y2 is 5 hours.

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Abstract

The invention discloses a polyvinyl alcohol / sodium alginate hydrogel for a single-electrode friction nanogenerator and a preparation method thereof. The polyvinyl alcohol / sodium alginate hydrogel prepared in the present invention has the function of self-repair, and has the characteristics of low cost, high conductivity, high transparency, and super tensile performance; the polydimethylsiloxane prepared in the present invention The oxane film has good electronegativity and high transparency, and the single-motor triboelectric nanogenerator based on polyvinyl alcohol / sodium alginate hydrogel and polydimethylsiloxane film has good transparency, good flexibility, and high performance. High, good stability. High output power per unit area. It belongs to the field of nano new energy.

Description

technical field [0001] The invention relates to the field of nano-new energy, and more specifically relates to a polyvinyl alcohol / sodium alginate hydrogel for a single-motor friction nano-generator and a preparation method thereof. Background technique [0002] A nanogenerator is a new type of device that can harvest natural mechanical energy and convert it into electrical energy. Due to the increasingly serious energy shortage and environmental pollution problems, the research and development and application of nanogenerators have received extensive attention. Triboelectric nanogenerators are developed based on the principle of triboelectric charging, which can realize the mutual conversion of mechanical energy and electrical energy through the mutual contact and separation of two materials with opposite electrical properties. [0003] A general triboelectric nanogenerator is composed of an electropositive material and an electronegative material, and connects an external...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08L29/04C08L5/04C08K3/38H02N1/04
CPCC08J3/075C08J2329/04C08J2405/04C08K2003/387H02N1/04
Inventor 米皓阳经鑫刘跃军
Owner HUNAN UNIV OF TECH