Construction And Application Research Of Carbon Black Evaporative Power Generation Materials

In recent years,water evaporation driven generators have attracted extensive research interest due to their advantages of spontaneous power generation,no need for additional mechanical devices,and environmental protection.Its electrical performance and application fields depend on the inherent characteristics of power generation materials,so how to improve the performance of power generation materials is crucial.Carbon black has the advantages of good conductivity,low cost,and simple preparation,making it a potential development space in water evaporation induced power generation technology.In this thesis,carbon black is used as the base material to prepare a water vapor driven generator,and the electrical performance of the power generation material is optimized by studying the type of carbon black,load,electrode distance,ion solubility,environmental factors,and coupling other materials,thereby developing an efficient water vapor driven generator.The specific research content and conclusions are as follows:(1)Based(1)Preparation and electrical properties of carbon black and cotton fiber based evaporative power generation materialsUsing carbon black,sodium dodecyl benzene sulfonate,deionized water,and cotton fiber as raw materials,a simple soaking method was used to prepare evaporation power generation materials.The effects of different carbon black types,load levels,electrode distances,ion concentrations,and environmental factors on the electrical properties of power generation materials were optimized.The results showed that the optimized power generation material was dripped into 200 μL of seawater solution,the maximum output open circuit voltage,short circuit current,and power can reach 0.85 V and 10 V respectively μ A and 1100 nW.(2)Research on the Design,Construction and Application of a Respirator Based on Carbon Black and Cotton Fiber Evaporative Power Generation to Breathe MoistureUsing previously optimized power generation materials,calcium chloride,and commercial N95 masks as raw materials,a breathing moisture power generation mask was prepared using a simple suction filtration method.The electrical performance test results of the power generation mask in a high humidity environment show that the power generation mask can automatically absorb moisture in the air and generate electrical energy in a simulated high humidity environment of about 25 ℃ and 90 RH%,respectively,achieving a maximum open circuit voltage,short circuit current,and output power density of 1200 mV,5 μA and 687 nW/cm2 of high-performance output.Further,by supplying the generated electrical energy to the wireless temperature and humidity sensor,the temperature and humidity inside the mask can be monitored using the mobile phone APP.(3)Preparation and Electrical Properties of Evaporative Power Generation Materials Based on Carbon Black,Carbon Nanotubes,and SugarcaneIn order to further enhance the electrical properties of power generation materials,carbon black,carbon nanotubes,sugarcane,sodium dodecylbenzene sulfonate,deionized water,and cotton fibers are used as raw materials to prepare high-performance evaporative power generation materials through a simple immersion method.By utilizing the excellent conductivity of carbon nanotubes and carbon black solution for coupling optimization,the internal resistance of power generation materials is reduced,and the current of power generation materials is increased,Thereby achieving the enhancement of the electrical properties of the power generation material.The results show that the maximum power output of the power generation material optimized by coupling carbon nanotubes and carbon black exceeds the nanowatt level and reaches 20.8 μW.The optimized high-performance evaporative power generation material can directly power electronic devices without the need for capacitors,and only 11.5 wt%sodium chloride solution can be used to continuously power electronic devices.