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Application of a modified lignin nanocellulose film in triboelectric nanogenerators

A technology of nanocellulose and nanogenerators, applied in the direction of triboelectric generators, etc., can solve the problems of lack of biocompatibility and biodegradability, composite materials cannot be formed into films, etc., and achieve good biocompatibility and bioavailability Degradability, good electron absorbing/donating ability, and low manufacturing cost

Active Publication Date: 2022-07-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this report solves the problem that lignin is difficult to apply in triboelectric nanogenerators, the electron-withdrawing layer of this triboelectric nanogenerator still uses artificially synthesized polymer materials, which still lack good biocompatibility and biocompatibility as a whole. Degradability
Furthermore, the lignin used in the composite material is only 30%, if the addition of lignin continues to increase, the problem that the composite material cannot be formed into a film
In addition, the output voltage of the triboelectric nanogenerator reported in this literature is only 1V, and there is still a lot of room for improvement in terms of electrical performance.

Method used

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  • Application of a modified lignin nanocellulose film in triboelectric nanogenerators
  • Application of a modified lignin nanocellulose film in triboelectric nanogenerators
  • Application of a modified lignin nanocellulose film in triboelectric nanogenerators

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Experimental program
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Effect test

Embodiment 1

[0049] (1) According to the mass ratio of nanocellulose and modified lignin of 4:6, weigh quaternized lignin and nanocellulose with a feed ratio of 10% to prepare quaternized lignin nanofibers with a mass fraction of 0.75% 100% oxidized lignin and nanocellulose were weighed to prepare a mixed solution of oxidized lignin and nanocellulose with a mass fraction of 0.75%.

[0050] (2) Weigh 11.5 parts by mass of the quaternized lignin nanocellulose mixed solution and the oxidized lignin nanocellulose mixed solution and place them in a plastic petri dish with a diameter of 60 mm, air-dry naturally until the water evaporates completely, and peel off to obtain a thickness It is 22 micron quaternized lignin nanocellulose film and oxidized lignin nanocellulose film.

[0051] (3) Cut the obtained quaternized lignin nanocellulose film (positive electrode friction layer material) and oxidized lignin nanocellulose film (negative electrode friction layer material) into squares of 3 cm × 3 c...

Embodiment 2

[0053] (1) According to the mass ratio of nanocellulose and modified lignin of 4:6, weigh quaternized lignin and nanocellulose with a feed ratio of 25% to prepare quaternized lignin nanofibers with a mass fraction of 0.75% 100% oxidized lignin and nanocellulose were weighed to prepare a mixed solution of oxidized lignin and nanocellulose with a mass fraction of 0.75%.

[0054] (2) Weigh 11.5 parts by mass of the quaternized lignin nanocellulose mixed solution and the oxidized lignin nanocellulose mixed solution and place them in a plastic petri dish with a diameter of 60 mm, air-dry naturally until the water evaporates completely, and peel off to obtain a thickness It is 22 micron quaternized lignin nanocellulose film and oxidized lignin nanocellulose film.

[0055] (3) Cut the obtained quaternized lignin nanocellulose film (positive electrode friction layer material) and oxidized lignin nanocellulose film (negative electrode friction layer material) into a 3cm×3cm square and ...

Embodiment 3

[0057] (1) According to the mass ratio of nanocellulose and modified lignin 4:6, weigh the quaternary ammonium lignin and nanocellulose with a graft ratio of 50% to prepare a quaternary ammonium lignin with a mass fraction of 0.75% A mixed solution of cellulose and nanocellulose was weighed, and the material ratio of 100% oxidized lignin and nanocellulose was weighed to prepare a mixed solution of oxidized lignin and nanocellulose with a mass fraction of 0.75%.

[0058] (2) Weigh 11.5 parts by mass of the quaternized lignin nanocellulose mixed solution and the oxidized lignin nanocellulose mixed solution and place them in a plastic petri dish with a diameter of 60 mm, air-dry naturally until the water evaporates completely, and peel off to obtain a thickness It is 22 micron quaternized lignin nanocellulose film and oxidized lignin nanocellulose film.

[0059] (3) Cut the obtained quaternized lignin nanocellulose film (positive electrode friction layer material) and oxidized li...

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Abstract

The invention discloses the application of a modified lignin nanocellulose film in a triboelectric nanogenerator. In the present invention, quaternized lignin and nanocellulose are mixed to prepare quaternized lignin-nanocellulose film, and oxidized lignin and nanocellulose are mixed to prepare oxidized lignin-nanocellulose film. The lignin-nanocellulose film was used as the positive friction layer material, and the oxidized lignin-nanocellulose film was used as the negative electrode friction layer material to prepare a triboelectric nanogenerator. The quaternized modified lignin nanocellulose film has a positive frictional polarity, and the oxidized lignin nanocellulose film has a negative frictional polarity. Assembling the two lignin nanocellulose films as electrode materials into a triboelectric nanogenerator can significantly improve the Its triboelectric output voltage. The triboelectric nanogenerator can be applied to a self-powered quality sensor, and its output voltage has a good linear relationship with the quality of the object to be measured.

Description

technical field [0001] The invention belongs to the field of nano-energy, and in particular relates to the application of a modified lignin nano-cellulose film in a triboelectric nano-generator. Background technique [0002] With the growing demand for clean energy, harvesting mechanical energy from the surrounding environment and converting it into electrical energy has become a hot issue, which is critical to alleviating energy shortages and global warming. In 2012, researchers first proposed a triboelectric nanogenerator, an energy device that can conveniently and efficiently collect ambient energy and convert it into electrical energy (NanoEnergy, 2012, 1, 328334). This is a miniature self-powered energy harvesting device with the advantages of flexible structure, light weight, low cost, and diversified functions. Its working principle is to convert the mechanical energy generated by the external environment and the human body into available electrical energy through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/00C08L1/02H02N1/04C08J5/18
CPCH02N1/04C08J5/18C08J2397/00C08J2401/02
Inventor 钱勇冯锐恒邱学青杨东杰楼宏铭欧阳新平
Owner SOUTH CHINA UNIV OF TECH
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