Nanoscale channels are essential for the action of proteins through membranes, controlling the flow of ions and molecules through the inner and outer walls of biological cells. This, in turn, is the key to many biological processes that sustain cells. Flow-controlled nanochannels will play an important role in future fuel cells and batteries. Arun Majumdar, chief scientist of the Department of Energy of the Advanced Research Projects Agency of the US Department of Energy (ARPA-E) and Chuanhua Duan of the University of California, and others, jointly developed the project, and the results have been published in the journal Nature Nanotechnology. . Improved ion transport can increase the power density and the actual energy density of fuel cells and batteries. Although the theoretical energy density of fuel cells and batteries is determined by active electrochemical materials, the actual energy density is still much lower because of the loss of internal energy and the use of inactive components. Improved ion transport is expected to reduce internal resistance in fuel cells and batteries, which can reduce internal energy losses and increase actual energy density. The researchers found that in 2-nm hydrophilic nanostructures, ion transport can be greatly enhanced due to their geometric arrangement and high surface charge density. Current separators are mostly microporous layers composed of polymeric films or non-nonwovens. An inorganic membrane embedded in a 2-nm hydrophilic nanochannel arrangement is expected to replace the current separators and improve the actual power and energy density. The next step for the researchers is to study the transport of ions and molecules in hydrophilic nanotubes, which are even smaller than 2-nm. With smaller geometries and stronger hydration power, it is expected that ion transport will even increase further. Researchers are developing inorganic membranes embedded in 2-nm hydrophilic nanotube arrays for studying transport in aqueous and organic electrolytes, and will also be developed as new separators for lithium-ion batteries. Single Disc Grinding And Polishing Machine Single Disc Grinding And Polishing Machine,Grinding And Polishing Machinery,Grinding Sanding Machine,Steel Polish Grinder TROJAN (Suzhou) Technology Co., Ltd. , https://www.trojanmaterials.com
Key to future fuel cells and batteries - flow-controlled nanochannels
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