Cellulose-based nano friction generator with high output performance and preparation method thereof

Abstract

The invention belongs to the field of materials, and particularly relates to a cellulose-based friction nano-generator and a preparation method thereof. The invention provides a cellulose-based nanometer friction generator, the friction generator comprises a positive electrode material, a negative electrode material and an electrode material, and the positive electrode material comprises bacterial cellulose and hydroxyethyl cellulose. The invention provides a cellulose-based positive electrode material for a friction nanometer generator for the first time, and also provides a method for improving the output performance of the friction nanometer generator by regulating and controlling the surface work function of a friction material through a simple physical blending method for the first time. The nano friction generator positive electrode film prepared by the invention is only dissolved by deionized water in the preparation process, and has good biocompatibility and degradability; the introduced hydroxyethyl cellulose can reduce the surface work function of the bacterial cellulose film, and the output performance of the prepared friction nano-generator can be greatly improved while the advantages of the bacterial cellulose are reserved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a cellulose-based triboelectric nanogenerator and a preparation method thereof. Background technique [0002] Triboelectric nanogenerator is a device that can convert the ubiquitous tiny low-frequency (<5Hz) mechanical energy into electrical energy. Since it was first prepared in 2012, it has attracted extensive attention from the scientific community. Triboelectric nanogenerators can realize the conversion of mechanical energy into electrical energy based on two classic physical phenomena of frictional electricity generation and electrostatic induction. Since different materials have different electron affinities, triboelectricity can occur when materials are in contact with each other. At the same time, the greater the difference in the ability of materials to gain and lose electrons, the more electrons will be transferred in the process of material contact and separati...

AI Technical Summary

Problems solved by technology

[0005] Although bacterial cellulose has good mechanical properties and can be degraded in nature, its relatively high surface work function makes it difficult to lose electrons during friction as a friction cathode material, so it is necessary to modify bacterial cellulose , to improve its ability to lose electrons

[0006] In the prior art, there is no relevant report on the use of composite membranes made of bacterial cellulose and hydroxyethyl cellulose as cathode materials for triboelectric nanogenerators.

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