Research On The High Effective Diffusion Of The Plant’s Stomata Basing On The Bionic

Plants, which have many characteristics of life activities that are different from our human beings and other life forms, are the first producers to supporting the earth’s biosphere. The specific biological phenomena are mostly placed in the plant blade stomata. In this paper, we started from bionic vision with drawing on series of plant features such as stomata high diffusion effect and selective permeability. We put the zinc-air battery as a working vehicle, combine the experimental explore with the theoretical analysis to explore the dehydration of zinc-air battery under different environment and the impact on its work and dehydration when covered by bionic blade. And the paper explored the different phenomena and its mechanism of oxygen and water vapor through the micron-sized holes preliminary.The main work of this paper include: First, explored the effect of dehydration on zinc-air battery under different environmental factors through changing the environment temperature, relative humidity and air flow rate. And it confirmed the importance of "dehydration" on the zinc-air battery. Second, through making the bionic blades and overlying the zinc-air battery, verify whether the bionic blades can play the "water-permeable" role in the battery work by constant current discharging. Third, from the environmental status of bionic blades and battery, diffusion parameters of water vapor and oxygen, the physical and chemical properties and other views, give a comprehensive explanation of the reasons for this phenomenon. The main conclusions as follows:(1) When the relative humidity increased, the dehydration of the battery reduced. When the environment temperature rose, the dehydration of the battery also increased. When the environment temperature reached as 70 ± 1℃, the relative humidity reached as 30% ± 5%, the dehydration of the battery will less than 50% to its own moisture content due to work, the battery can not work normally.(2) The blade will not hinder the transfer of oxygen when the distance of the blade pore is less than the critical distance, at the same time, covering the bionic blades can discharge the dehydration of the zinc-air battery by 40% to 80%. The fewer the number of the pores, the less the dehydration of the battery. When the pore spacing reaches a critical value, the dehydration of the battery reaches the minimum. As the dehydration of the battery reduced, the voltage attenuation became slow, and also, the working of the battery was more stable. In the critical range, the less number of micro-pore, the better the discharging performance of the battery.(3) When the environment temperature reached 20℃, the relative humidity reached 60% and the air flow rate reached 7.0m/s, considering the gas concentration difference, the diffusion capacity of the oxygen to through the bionic blades is much higher than the water vapor diffusion capability on it. This is because when the intermolecular interaction became strong, the polar of water molecules will manifest. When the two molecular go through the pores, the capacity of water molecules will be significantly lower than the non-polar oxygen molecules. At the macro, it shows that the resistance of collision and diffusion of the water vapor molecules was higher when they went through the micro-pore. The diffusion amount of the water vapor was significantly lower than the diffusion amount of oxygen.