Stanford University scientists have recently designed an electrocatalytic device, which works similar to the lungs of mammals and can convert water into fuel, which helps the existing clean energy technology to operate effectively. The research report was published in the recently published "Joule" magazine. For most organisms, the action of inhaling and exhaling air is done automatically. It is generally considered to be very simple, but in fact the mammalian breathing process is one of the most complex two-way gas exchange systems in nature. With each breath, air passes through the channel-like bronchioles of the lungs and eventually reaches the alveoli. In the alveoli, the gas must enter the blood instead of simply spreading, which will result in the formation of harmful bubbles. The unique structure of the alveoli-including a 1 micron thick film, the inside of the film is waterproof, repels water molecules, and the outside of the film absorbs water molecules, thereby preventing the formation of bubbles and promoting gas exchange to become more efficient. Cui Yi, a professor at the Department of Materials Science and Engineering at Stanford University, was inspired by mammalian lung breathing and used it to develop a better electrocatalyst—a material that accelerates chemical reactions on electrodes. The first author of the research report, Li Jun, said: "Clean energy technology has now proven to have the ability to quickly transport gaseous reactants to the reaction interface, but the reverse approach-generating highly efficient gas products from the catalyst / electrolyte interface, still has great challenge." The research team simulated the alveoli from a mechanical structure and carried out two different processes to improve the reaction process of driving sustainable technologies such as fuel cells and metal-air batteries. The first process is similar to exhalation. This mechanism oxidizes water molecules through the anode of the battery and simultaneously reduces them at the negative electrode, decomposing the water into hydrogen—a clean fuel. At the same time, the reaction process quickly generates and transports oxygen through the alveolar structure made of a layer of polyethylene without the energy consumption of forming bubbles. The second process is more like inhaling air, generating energy through a reaction that consumes oxygen, and oxygen is delivered to the catalyst on the electrode surface, which can be used as a reactant in the electrochemical reaction. Although the device is still in the early stages of development, its future application prospects are promising. Compared with the traditional carbon-based gas diffusion layer, this ultra-thin nano-polyethylene film has a longer time waterproof performance, and the model can achieve a higher gas flow density and lower potential than the traditional design. The researchers said that this new lung-inspired design still has some room for improvement before it is put into commercial use. Since the nano-polyethylene film is a polymer-based film, it cannot withstand temperatures exceeding 100 degrees Celsius, which limits its application range. The research team believes that this material may be replaced with a similar ultra-thin nano waterproof membrane, which can withstand higher energy. At present, they plan to integrate other electrocatalysts into the equipment design to give full play to their catalytic capabilities. (Yang Yan) Led Flood Light,Waterproof Cob Led Flood Lights,Stadium Led Flood Lamp,Led Projector Floodlight Shenzhen You&My Electronic Technology Co., Ltd , https://www.youmysolarlight.com