Mechanism Of Charge Induction By A Novel Moving Solid-liquid Interface With Two Electrodes

With the rapid economic growth of the country,the rapid development of industry,shipping and other fields,but also intensified the consumption of energy.With the decrease of non-renewable energy,wind power generation and wave power generation have been developed by leaps and bounds,but there is still great room for development and utilization of low-grade energy.Although there is a lot of research on solid-liquid interface interactions to generate electricity,the experimental materials used in the experiments are mostly graphene,semiconductors(silicon),polymers and other materials.Some common metal materials,such as iron and copper,are difficult to be used as "pseudo-capacitor" generators.In order to make extensive use of metal materials to generate electric energy from solid-liquid interface contact and to provide theoretical support for its later practical application,the charge induction system by a novel moving solid-liquid interface with two electrodes was designed.The main research contents are as follows:(1)The charge induction system by a novel moving solid-liquid interface with two electrodes was designed,and according to the system model and the equivalent circuit diagram,deduce the formula of induced current,theoretical analysis showed that by using electrodes immersed in the electrolyte solution,as the droplets in the electrolyte solution,there is only one electrode was wet,a moving liquid-gas interface could produce significant difference.Experiments showed that the potential difference between the two electrodes was due to the difference in the wetting area of the two electrodes.Theoretically,when two electrodes have the same wetting area,there is no potential difference in the circuit.(2)According to the mechanism of charge transfer and the system.model,the factors affecting the generation of electric pulse signals in the moving solid-liquid interface charge induction system of bimetallic electrode system were explored.The experimental results showed that the amplitude of electrical pulse increased with the drop height,the electrode area and the drop volume,and decreased with the increase of pH value of the solution.When the droplet fell to a height of 25cm,the current pulse signal could reach 768.3nA and the voltage pulse signal could reach 0.185mV.When the droplet volume was 0.063mL,the current pulse signal could reach 1447.8nA.When the pH value of the solution was 3,the current pulse signal could reach 141.2nA.(3)Set the metallic and dielectric layer composite electrode charge induction system,carry out the type,thickness and dielectric layer wetting area of research on the influence of the pulse signal,the results showed that the thickness of paint and wetting area would influence the production of the pulse signal,when the thickness of paint was 35 μm,current pulse signal could reach 17μA,voltage pulse signal could reach 50 mV;When the wetting area reached 41.3cm2,the current pulse signal could reach 10μA and the voltage pulse signal could reach 80mV.PTFE film of 30μm thick was coated on the surface of copper sheet,which could generate 8.3mV voltage pulse signal.The method of inserting a pair of metal electrodes into the electrolyte solution proposed in this paper makes it possible to obtain large wave potential energy and sensing applications from the dynamic liquid-solid boundary by using ordinary metal materials.It also provides theoretical support for later practical application.