Based On Polypyrrole Modified Filter Paper Humidity Sensor And Evaporation Power Generation Device Development

The convenience of modern society is largely due to the emergence of electric energy.However,with the consumption of non-renewable resources such as oil,natural gas and coal,as well as environmental pollution and other problems,the national policy began to strictly control the highly polluting coal-fired power generation and turned to other forms of power generation.At present,the mainstream hydropower generation,wind power generation,photovoltaic power generation and so on are limited by the region,so it is urgent to develop new clean energy.Water has abundant reserves on the surface and is a liquid that flows and evaporates easily.The enormous energy stored in water can be released through flow and evaporation.Water-volt power generation is a form of power generation that directly converts water energy into electricity.It can output a certain voltage as long as there is water or even when the humidity in the air is high,which has low requirements on the environment.In recent years,water and volt power generation has become an important direction of clean energy development and has attracted the attention of many scholars.The materials used in water-volt power generation devices have been expanded from carbon-based nanomaterials and layered bimetallic hydroxides to porous silicon carbide films and microporous carbon at present.Therefore,it is an important development direction to constantly study the new material system for water-volt power generation and optimize the range of water-power generation environment.This paper uses polypyrrole(PPy)and cellulose filter paper(FP)to develop a new water-volt power generation device,and studies the voltage output rule and reaction mechanism respectively.1.With filter paper as the base material and PPy as the humidity sensitive material,voltage responsive humidity sensor was prepared.The sensor has the advantages of simple manufacturing process,low cost,environmental friendliness and fast response.The morphology,crystal structure and thermal stability of the PPy/FP humidity sensitive materials were characterized,and discussed the working mechanism of the humidity sensor,at the same time,the voltage output rule of the system test,studied the influence factors of the voltage output performance of PPy/FP,and applied to breath detection,motion state,In multiple scenarios,such as soil moisture.When the relative humidity is RH 98%,the response voltage is 120 m V.2.Also with filter paper as the base material,PPy for water and voltage power generation materials,the use of beeswax on PPy/FP membrane hydrophobic modification,the introduction of hydrophobic interface on the surface,so that water can flow directional,the preparation of water flow and evaporation driven water and voltage power generation device.The device has the advantages of flexible deformability,simple fabrication,high voltage output and sensitive response.In this paper,the changes in the appearance of the surface and cross section of the sample before and after hydrophobic modification were observed by scanning electron microscopy,and the element composition of the sample and the chemical composition of the material before and after hydrophobic modification were analyzed by X-ray energy spectrum analyzer through Fourier transform infrared spectrum,and the working mechanism of the evaporative power generation device was discussed,and the voltage output rule was tested.The influences of ambient temperature and humidity,droplet quality,bending degree and salt on its voltage output were studied.When the RH is 40% and the temperature is 10 ℃,the voltage output reaches about 600 m V by adding 5 μL deionized water,and the whole response and recovery time can last about 60 min.