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PSI researcher Claire Villevieille, head of the Battery Materials Group, at the instrument for X-ray diffraction. Credit: Paul Scherrer Institute/Markus Fischer

PSI, Switzerland and Université Grenoble Alpes (France) researchers have developed a method that could enable a breakthrough for the lithium-sulphur battery. In theory, these batteries can deliver considerably more energy than today’s conventional lithium-ion batteries, but current prototypes show a distinct loss of capacity after just a few charging cycles. So they are not yet fit for widespread use, for instance in electric vehicles. With their new method, the researchers were able to gain crucial insights into how the rapid capacity loss occurs...

Schematic illustration of polypyrrole-manganese dioxide (PPy-MnO2) coaxial nanotubes to accommodate sulfur for high-performance Li–S battery. Comparison of cyclic performance of S/PPy-MnO2 and S/PPy at 0.2C. (Reprinted with permission by American Chemical Society) (click on image to enlarge) Read more: Improving the performance of lithium-sulfur batteries with coaxial nanotubes

University of Texas team has found that using coaxial nanotubes can improve the performance of lithium-sulfur batteries (Li-S).They used Polypyrrole-MnO2 coaxial nanotubes to overcome obstacles to using Li-S batteries in commercial products. Prior research has shown that Li-S batteries would offer users of electronics more energy storage—as much as 5X that of lithium-ion batteries...