Novel composite material and swing type friction nanometer generator using same

Abstract

The invention discloses a novel composite material and a swing type friction nanometer generator using the material, the composite material is of a layered structure, and the composite material comprises a first electrode layer, an insulating layer, a second electrode layer, a PTFE friction layer, a third electrode layer, a BaTiO3 piezoelectric composite layer and a fourth electrode layer from top to bottom in sequence; the first electrode layer, the insulating layer, the second electrode layer and the PTFE friction layer are of an arch structure. The swing type friction nanometer generator comprises an adjusting support, an eccentric rotating wheel, a shell, a novel composite material, a rotating shaft and a bearing. The adjusting support comprises a base and an adjusting screw rod fixed on the base; the eccentric rotating wheel is arranged in the shell, the shell is fixed to the base, and the novel composite material adheres to the inner wall of the shell. The eccentric rotating wheel is composed of three solid blades and three hollow blades, and is fixed on the adjusting screw rod through a rotating shaft. The novel composite material provided by the invention simultaneously has triboelectric and piezoelectric characteristics, and can generate higher charge output when being rubbed by pressure.

Description

technical field [0001] The invention relates to a novel composite material and an oscillating friction nanometer generator using the material, which belongs to the technical field of friction nanometer power generation. Background technique [0002] Triboelectric nanogenerator is a new type of miniature electrification device based on the principles of triboelectrification and electrostatic induction. Utilize the mutual friction between two materials with large electronegativity difference to generate heterogeneous triboelectric charges, and the relative position between the two electrified materials changes under the action of external excitation to generate a potential difference. Under this condition, the free charges in the external circuit can move directionally to generate electric energy output. The triboelectric nanogenerator is suitable for collecting and utilizing tiny energy in the environment or the human body. [0003] At present, the research on triboelectric...

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Problems solved by technology

[0003]At present, the research on triboelectric nanogenerators is mainly concentrated in the field of contact separation and contact sliding. During the operation of the contact friction nanogenerator, the frequent contact and friction between the electrified materials will cause the friction material to wear and cause thermal effects. The existence of friction will also significantly reduce the running time of the device and affect the friction nanogenerator. Device life and energy conversion efficiency

At the same time, the selection of electronegativity materials for triboelectric nanogenerators is relatively single at this stage, which has great limitations. During the normal operation of triboelectric nanogenerators, friction materials of a single nature often cannot give full play to their electronegativity and cannot generate enough energy. Therefore, a new type of composite material with stronger charge output capability is urgently needed

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