Design And Optimization Of Submerged Wave Energy Friction Nano Power Generation Device

There is a huge amount of energy in the ocean,and wave energy,as one of the most important forms of energy,has always received wide attention from researchers.With the continuous development of underwater sensors and sensors,the current power supply technology can no longer meet its large-scale,stable and long-term needs.Due to the special power generation principle of triboelectricity and electrostatic induction,friction nano generator(TENG)can convert low-frequency wave motion directly and efficiently into electric energy,which provides more possibilities for the power supply of underwater sensors and inductors.At present,the application of TENG to wave energy collection technology has become a popular direction for researchers.A submerged wave energy friction nano power generation device is proposed in this thesis,which mainly includes a hollow cylinder,a buoy,a friction nano generator and a base.The working mode of the TENG is the vertical contact separation type,and the contact separation effect mainly occurs between the aluminum(Al)electrode and the polydimethylsiloxane(PDMS)dielectric material.The main research contents and conclusions are as follows:(1)The theoretical model of submerged wave energy friction nano power generation is proposed,and the relationship equation of V-Q-I-C-t is established.The submerged wave energy TENG system is simulated and analyzed by COMSOL finite element analysis software and further analyzed by Simulink software.The change law of V-Q-I-C-t is obtained through the vibration simulation analysis.(2)In the preparation of triboelectric nano-power generation materials,pure PDMS films were prepared by spin-coating method,and PDMS films with Cu nanoparticles were added.The surface of PDMS films was characterized by scanning electron microscope.The results showed that the surface of PDMS films was flat and smooth.(3)Through the semi-physical simulation experiment system,the power generation state of the friction nanogenerator was tested.The influence of the structure parameters of the PDMS film on the output state of the friction nanogenerator was compared and analyzed,and its influence law was obtained.At the same time,the influence of external load size and load frequency on the output state of the friction nanogenerator and its influence law are compared and analyzed.(4)The output state of the friction nanogenerator after the optimization of the dielectric material was analyzed,and it was found that adding copper(Cu)nanoparticles can significantly increase the open circuit voltage of the friction nanogenerator.The open circuit voltage of the PDMS film with 0.1g,0.5g,and 1g Cu nanoparticles with different masses under the same conditions is about 1.7 times,3.5 times and 4.6 times that of the pure PDMS film.