Research On Controllable Manufacturing Method And Triboelectric Performance Of Micro-nano Composite Multistage Structure

The rapid development of Internet of Things technology has promoted the development of electronic devices in the direction of multi-function,miniaturization and wide distribution.There are many inevitable problems in the traditional battery energy supply method,such as low charge and discharge efficiency,short service life,and environmental pollution caused by waste batteries.Therefore,it is extremely important to find a new energy supply solution.The triboelectric Nanogenerator(Teng)based on friction electrification and electrostatic induction can transform the mechanical energy in the environment into electrical energy,and supply energy for electronic equipment efficiently and stably.Meanwhile,it provides new ideas and methods to solve the increasing energy crisis and environmental problems.This paper proposed to build a friction surface TENG based on micro-micro composite multi-level and micro-nano composite multi-level structure,which realized the super-hydrophobicity of the friction surface and increased the effective friction area.The research work has important theoretical significance and engineering application value.This paper proposed a controllable fabrication method of multi-level structure based on photolithography and molding complex process.The secondary structure hole mold was used for uniform glue and photolithography to prepare a multi-hole structure mold with composite holes The film was turned by the molding and reshaping process to obtain the corresponding multi-level structure film.Using this method,micro-micro composite multi-level and micro-nano composite multi-level structures with different sizes and center distances were prepared.According to the superhydrophobic theory,the hydrophilic and hydrophobic characteristics of different microstructured surfaces were characterized and compared.The influence of the surface structure on the hydrophobic performance was analyzed.The necessity of the construction of the multi-level structure for the superhydrophobic characteristics of the solid surface was determined.At the same time,C4F8(Octafluorocyclobutane)nano-film deposition surface modification method to improve the hydrophobic performance.In this paper,the single-electrode theoretical model was used as a reference to encapsulate the device to obtain TENG for solid-liquid friction power generation.The specific flow of charge in the process of water friction power generation was analyzed.Through the self-built solid-liquid friction power generation test platform,the electrical signal output characteristics of different micro-nano structure friction surfaces TENG were characterized.From the characterization results,it was found that the super-hydrophobic multi-level friction surface generator device not only has higher signal output amplitude The charging and discharging speed was also significantly faster.In this paper,the device for solid-solid friction power generation was prepared by using the vertical contact-separation theoretical model as a reference.The paper analyzed the specific flow of charge during the excitation process,built a solid-solid friction power generation test platform,and characterized the electrical output characteristics of the micro-micro composite multi-level structure and the corresponding single-level structure friction surface TENG,and found the multi-level structure friction surface The device had a higher electrical signal output.Through the above research,this paper obtained micro-micro composite multi-level and micro-nano composite multi-level structure friction surfaces,which could not only achieve super-hydrophobic properties,but also could be applied to solid-liquid friction power generation and solid-solid friction power generation simultaneously Performance friction nano-generators had shown great application prospects in energy collection and electronic equipment self-power supply.