Electrochemical Preparation Of ZnO Composite Nanostructure And Its Application In Nanogenerators

Zinc oxide?ZnO?is a common straight-gap semiconductor multifunctional material in electronic devices,due to its good piezoelectric properties,electrochemical activity and electrical conductivity.MnO₂,owing to the theoretical specific capacitance,is able to store much charge,but its poor conductivity.Therefore,combining with the advantages of ZnO and manganese dioxide?MnO₂?,I prepared composite nanodevices,with good piezoelectric properties,good electrical conductivity,high theoretical specific capacitance,and strong charge storage ability.In this paper,ZnO nanorods has been prepared by electrochemical anodic oxidation,zinc foil acts as anode,Ag/AgCl act as reference electrode,Pt electrode act as cathode,hydrofluoric acid that mixed with ethylene glycol solution act as electrolyte solution.Electrochemical anodic oxidation is different from electrochemical cathodic deposition,nanomaterials are directly obtained by growing zinc atoms on the surface of anode.The purpose of this treatment is to make the nanomaterials and the substrate much more tightly bound together.In this experiment,the zinc foil was used as the electrode and the reaction substrate,and the ZnO nanorod array was successfully prepared by adjusting the process parameters to achieve controlled growth of the ZnO nanomaterial.ZnO nanorods with a diameter of up to 500nm are optimized by doping,which is about four times higher than the diameter of the prior nanorods.Nanocrystalline ZnO-MnO₂ composite nanomaterials were successfully grown on ZnO nanorods using a mixed solution of manganese sulfate and hexamethylenetetramine.The prepared nano-ZnO and ZnO-MnO₂ composite nanomaterials were subjected to scanning electron microscopy?SEM?,energy dispersive spectroscopy?EDS?,X-ray diffraction?XRD?characterization and electrical performance analysis.This paper deeply explained the mechanism of the growth of nanorods in the anode of an electrolytic cell,Hydroxyl groups provide with transport channels to the anode and prevent from the formation of nanomaterials from the anode.This paper also explains the growth of ZnO-MnO₂ composite nanomaterials,using ZnO nanorods as a substrate is the essence of ZnO-MnO₂ synchronous mixed growth after ZnO nanorods are etched.In this paper,a device for testing the performance of an upright nano-generator is made to achieve the ability to control the slap frequency and the slap strength when testing the performance of an upright nano-generator and to maintain a constant level while also being able to measure upright nano-generation.The life of the machine.Using a prepared ZnO-MnO₂ nanocomposite material to prepare an upright composite nano-generator,pressure response,frequency response,load response and power response of the upright composite nano-generator are controlled by a device capable of measuring the performance of the upright Nano-Generator,Lifetime characteristics test.According to the test results,the output voltage of the composite vertical nano-generator increases with the increase of the slap strength,and then increases first and then decreases with the increase of the slap frequency.The internal resistance of the composite nano-generator as a power source is approximately10M?.Correcting the semi-empirical formula of the output power of upright composite nanogenerator based on the classical power output power formula.