Design And Application Of Triboelectric Nanogenerator Based On Vitamin B1,Instant Noodles And PTFE

In recent years,the Internet of Things has seen unprecedented development,and all kinds of wearable electronics,intelligent robots,unmanned aerial vehicles and sen-sors emerging.The explosive growth of electronic products has brought convenience to people's lives,but it has also exacerbated the problem of energy crisis,such as the large demand of mobile products for electric energy and the power supply of intelligent vending machines.The exploitation of new energy has become an urgent problem for all countries to solve.The first triboelectric nanogenerator proposed by academician Wang Zhonglin in 2012 provides a new idea for energy supply.After years of research and development,triboelectric nanogenerators have been able to collect a variety of low-frequency energy common in life,such as human walking,sound energy,water wave energy and vibration energy,etc.In addition,the triboelectric nanogenerators proposed recently can be used for sensing applications while collecting energy.In this thesis,the design and application of triboelectric nanogenerator based on vitamin and flour materials are studied.The main contents and innovative achievements are as follows:1.Four basic operating modes,including vertical contact-separation mode,hori-zontal sliding mode,single electrode mode and independent layer mode,are described.The theoretical origin of triboelectric nanogenerator is described,and the vertical contact-separation model is analyzed by the Gauss'theorem and electrostatic induction.2.This thesis studies the triboelectric nanogenerator based on vitamin B1(TVB-TENG),analyzes its basic principle,and deduces the formula of its theoretical model.The relationship between the output voltage of TVB-TENG and the amount of transferred charge,the surface charge density and the distance between the friction layers is given.The output characteristics of TVB-TENG are also studied.The output voltage(Voc)is up to 340 V,the short circuit current(Isc)is up to 46.3?A and the output power density is up to 120.13?W/cm~2.In addition,the influence of load resistance,effective contact area,abrasion degree of support structure and humidity on the output characteristics of TVB-TENG is also studied.Finally,a humidity sensor that can reflect the change of ambient humidity is obtained by combining light emitting diode(LED)with TVB-TENG.The TVB-TENG will have a wide range of application scenarios in the field of electronic product power supply and self-power sensing.3.The triboelectric nanogenerator based on flour materials(FP-TENG)was studied.By comparing the triboelectric nanogenerator made of flour,noodles and instant noodles,it was found that the electron loss ability of instant noodles was stronger than that of flour and noodles.The basic principle of the triboelectric nanogenerator based on polyte-trafluoroethylene/instant noodles powder(INPP-TENG)and the formula derivation of its theoretical model were analyzed,and the V-x-Q relationship of INPP-TENG was given.In addition,the relationship between the output voltage and the surface charge density,the thickness of the instant noodles layer,the thickness of the PTFE layer,the distance be-tween the friction layers and the dielectric constant of each layer are also studied.Finally,the formulations of the open circuit voltage,short circuit current and the transfer charge of INPP-TENG are deduced.Then,the output characteristics of INPP-TENG are studied.The output voltage(Voc)is up to 576 V,the short circuit current(Isc)is up to 56?A,and the output power density is up to 326.7?W/cm~2.The influence of load resistance on the output characteristics of INPP-TENG is studied.And the influence of mold,soaking,abrasion degree of support structure and humidity on the output characteristics of INPP-TENG is also studied.In addition,the power supply capacity of TVB-TENG was studied by connecting 185 LEDs with TVB-TENG.185 commercial blue LEDs were successfully lit,which indicates that it will have a broad application in the field of electronic power supply.Furthermore,the combination of the Miura structure and INPP-TENG is studied.After placing friction materials in specific areas of the Miura structure,the energy col-lection can be achieved while the plane space occupied by INPP-TENG can be reduced.Finally,the energy harvesting of this structure is studied.