Stretchable triboelectric nanogenerator based on liquid metal electrode and its preparation method

Abstract

The invention provides a tensile friction nano-generator based on a liquid metal electrode, including a tensile friction layer, a liquid metal electrode, and a lead. The tensile friction layer internally defines a sealed cavity. The liquid metal electrode is formed by filling the sealed cavity with liquid metal. One end of the lead is contacted with the liquid metal electrode, and the other end of the lead is extended by the tensile friction layer to connect an external circuit. The tensile friction layer rubs against an object to be contacted to produce charges and induces the liquid metal electrode when the tensile friction layer is separated from and / or re-contacted with the object to be contacted to enables the charges to flow, thereby generating an electrical signal and outputting the electrical signal through the lead. The material of the liquid metal is alloy or metal which is in the liquid state at the normal temperature. The friction nano-generator cannot cause problems such as deformation difficult to restore due to long-term mechanical movement, material wearing and the like.

Description

technical field [0001] The invention relates to the field of frictional nanometer generators, in particular to a stretchable frictional nanometer generator based on liquid metal electrodes and a preparation method thereof. Background technique [0002] With the progress of society and the improvement of people's living standards, flexible electronic devices and smart wearable products have received more and more attention. Artificial electronic skins, flexible touch displays, smart watches, health and sports monitoring products, etc. have appeared in people's work and life. These flexible electronic devices require matching batteries to work normally, and the current batteries not only do not have self-charging function, but also have short battery life, which greatly limits the practical application effect of flexible electronic devices. [0003] The most widely used application at present is to combine photovoltaic solar cell modules with supercapacitors or lithium-ion ba...

AI Technical Summary

Problems solved by technology

For electrode materials, traditional electrode materials mostly use metal foil or other hard materials, and these materials will be greatly limited in the application of wearable devices

Since these hard materials will be irreversibly deformed or damaged during long-term friction or bending, the power supply to wearable devices will have great limitations.

Images