Triboelectric Nanogenerator Based On Micro-area Gas Discharge

In recent years,the issue of sustainable energy utilization has become increasingly prominent,and how to efficiently use clean energy is a major difficulty facing scientific researchers.At present,many technologies have been proposed to realize the efficient use of clean energy such as solar energy,wind energy,tidal energy,and geothermal energy.However,the above-mentioned energy sources cannot directly power small electronic devices.Usually,people use small chemical batteries as energy sources for small electronic devices.However,chemical batteries are highly polluting,have a limited life span,and cannot work in extremely harsh environments(high or low temperatures),which hinders the widespread use of small electronic devices.Mechanical energy is widespread in the natural environment.If these energy can be collected effectively,it is expected to solve the problem of continuous energy supply and limited application scenarios for low-power electronic devices.In 2012,the friction nano generator(TENG)proposed by Academician Wang Zhonglin can convert mechanical energy in the environment into electrical energy,and has the characteristics of high stability,strong plasticity,and low cost.It has received extensive attention from scientific researchers.With the continuous in-depth research on the working mechanism and output characteristics of TENG,as well as the friction characteristics of sensitive materials,TENG with high electrical output has been developed,but it is still far from practical.In response to the practical needs of TENG,this paper proposes a performance improvement method for triboelectric nanogenerators based on micro-area gas discharge,and systematically analyzes and studies the theory and influence parameters of gas discharge,which mainly includes the following three parts:(1)Explore the effect of different doping materials on the output performance of PDMS-based TENG and its influence on micro-area gas discharge.The experiment selects PZT,silver copper powder,carbon as doping materials,and compares the output open circuit voltage,short circuit current,impedance matching,capacitor charging and other electrical performance indicators under zonedifferent doping conditions;explores the gas discharge of different TENGs in the micro area based on the tip structure Phenomenon influence law.Through comparison,it can be found that the carbon-doped PDMS film exhibits excellent electrical properties.The open circuit voltage can be increased from 700 V peak-to-peak of pure PDMS to 1000 V,and the short-circuit current peak-to-peak value is increased from 8μA to 17 μA,and the maximum output power can be increased.From 17.5 m W to 33 m W,the speed of charging the capacitor has also been significantly improved;when the device is connected to the tip structure,only TENG based on the carbon-doped PDMS film can discharge the tip micro area.The above research shows that carbon as an effective dopant material can greatly improve the output performance of TENG.(2)The phenomenon of micro-area gas discharge and its influencing factors are then studied.Through experimental phenomena,it can be seen that the micro-area gas discharge is similar to the natural "lightning" phenomenon,which instantly releases huge energy,which greatly improves the output of TENG.After testing,the open circuit voltage can be increased from 900 V to 2.5 KV,and the short-circuit current is increased from 35 μA to 60 μA.Then the system analyzes the influence of tip diameter,tip distance,ambient temperature,and gas flow rate on the output of TENG based on micro-area gas discharge.The experimental results show that the tip diameter and tip distance are inversely proportional to the output of the device,and the device has good temperature stability.The gas flow rate in the micro area is proportional to the output of the device.The research of these four types of influencing factors plays a guiding role in the further practical application of TENG based on micro-area gas discharge.(3)This article explores the application of TENG based on micro-area gas discharge.A method to effectively maintain micro-area gas discharge was found,which broadened the application range of TENG based on micro-area gas discharge.Based on the ultra-high voltage characteristics of TENG in micro-area gas discharge,a new type of piezoelectric material polarization device was built to realize the effective polarization of the Ba Ti O3 piezoelectric film.The above application exploration further promotes the practicability of TENG based on micro-area gas discharge.