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|TOP FIVE VALUES||4 days ago · Two researchers at the Chinese University of Hong Kong have developed a new membrane design that prevents crossover in polysulfide redox flow batteries. In their paper published in the journal Nature Energy, Zhejun Li and Yi-Chun Lu describe their work with the new membrane design. Wei Wang with Northwest National Laboratory has published a News & Views piece in the same journal issue. 14 hours ago · Membrane Transport Lab Answers Cell Membrane Transport Lab Answers The membrane of a cell is depicted as mosaic because it. answer choices. folds itself into a double layer when placed into polar surroundings. does not hold the characteristics of a solid substance. is composed of many different kinds of macromolecules. moves proteins laterally. 1 day ago · Antibodies that aid in the study of the structure and function of endosomes.|
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April 14, report. Two researchers at the Chinese University of Hong Kong have membrane transport lab a new membrane design that prevents crossover in polysulfide redox flow batteries. Since that time, such batteries have been widely used in large-scale applications such as backing up power grids. This is because they are easy to scale up to huge levels—the concept involves storing electrolytes in decentralized external tanks. In more recent times, scientists have wanted to build polysulfide redox flow batteries because they would be cheaper to build and maintain.
A plant was trabsport to test the idea, but unfortunately, doing so revealed a glaring weakness of the material—crossover of polysulfide species, which led to a very short life cycle. In this new effort, the researchers have overcome the problem of crossover with the development of a new membrane design. The design involves using a membrane transport lab of Ketjen black carbon affixed to the surface of a Nafion membrane using polyvinylidene fluoride.
The researchers note this was done by drop casting the carbon slurries onto both sides of the membrane. They also note that because the membrane was so large, the surface area across it was able to serve as a trap for polyiodide and polysulfide ions.
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When saturation occurred, they pointed out, the anions were blocked, keeping them from moving onto the membrane, and thus no crossover could occur. The researchers note that the high conductivity of the carbon on the membrane overcomes the low conductivity of the underlying membrane; thus, it is not detrimental to the function of the membrane as would be the case in membranes where trapping typically occurs. The researchers tested the design in both flow and static polysulfide —iodide cells and found that crossover did not occur, which meant improved life cycle numbers—proving the design feasible.
Explore further. Read more Wang. A membrane with repelling power, Nature Energy DOI: Your feedback will go directly to Membrane transport lab Xplore editors.
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Polysulfide-based redox flow batteries with transplrt life and low levelized cost enabled by charge-reinforced ion-selective membranes, Nature Energy This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Researchers studying how membrane transport lab make online arguments productive 7 minutes ago.]