Swing-type friction nano-generator and energy harvester

Abstract

The invention relates to a swing-type friction nano-generator and an energy harvester. The swing-type friction nano-generator comprises a housing, a swing structure, an electrode layer and a distributed friction layer, wherein the housing is of a closed housing structure and is internally provided with a cavity; the swing structure is positioned in the cavity and comprises a swing rod and a free swing friction layer which is rigidly connected with the tail end of the swing rod; the electrode layer is located on an inner surface of the housing and comprises a first electrode layer and a secondelectrode layer which are spaced apart from each other; the material of the distributed friction layer and the material of the free swing friction layer are located in different triboelectric sequences, one end of the distribution friction layer is fixed on the electrode layer, and the other end is a free end; and when the swing structure swings in the housing due to external excitation, the freeswing friction layer of the swing structure swings along with the swing structure, and electrical output is correspondingly generated on the electrode layer through friction electrification between the free swing friction layer of the swing structure and the distributed friction layer. The swing-type friction nano-generator has high energy collection efficiency, can adapt to various environments,has high stability and reliability, can respond to external excitation at any angle, and has a wide application prospect.

Description

technical field [0001] The disclosure belongs to the technical field of energy collection, and relates to a pendulum friction nanometer generator and an energy harvester. Background technique [0002] With the rapid development of the Internet and micro-nano electronic devices, the world is facing serious problems such as excessive energy consumption and energy shortages. Finding sustainable energy has become an urgent need for the future development of the Internet of Everything, especially in every corner of the world. It will become a huge project and require a huge amount of energy to supply power to these hundreds of millions of distributed electronic devices. [0003] Existing traditional energy sources such as lithium batteries not only have a short lifespan and cannot be replaced continuously, but maintaining a huge amount of batteries requires a lot of manpower and material resources. In addition, traditional batteries have potential environmental pollution; at the...

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Problems solved by technology

[0006] However, there are still many deficiencies in the existing energy harvesters based on triboelectric nanogenerators, such as: 1. The energy harvesting efficiency is very low under low frequency operation, which needs to be further improved; 2. Most of the energy harvesting process is in one-dimensional direction, such as based on friction The wind energy harvester of the nanogenerator, the vibrating membrane in the middle is in contact with the upper and lower friction layers to generate electricity under the action of wind force, it can only respond to the wind blowing in one direction to obtain energy conversion, and it has limitations in multi-dimensional space

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