A much less discussed, but debilitating drawback for the commercial viability of Li–S batteries is the use of the ether electrolyte itself. This series of challenges have been extensively studied in the past decade with most studies being in the ether electrolyte-based Li–S batteries 7, 8, 9, 10, 11, 12. Polysulfide shuttle results in an uncontrollable deposition of sulfide species on the lithium metal anode reducing coulombic efficiency and increasing capacity fade 6. A bigger challenge is the dissolution of the intermediate reaction products, lithium-polysulfides (LiPs), into the electrolyte causing the well-known “shuttle-effect” 4. The insulating nature of both sulfur and the final discharge product, Li 2S, results in low material utilization during the redox processes. However, the current Li-S system is plagued by numerous challenges 4, 5. In addition, sulfur is both environmentally friendly and naturally abundant in the earth’s crust. State of the art lithium–sulfur (Li–S) batteries are attractive candidates for use in electric vehicles (EVs) and advanced portable electronic devices owing to an order of magnitude higher theoretical energy density than the conventional lithium-ion batteries (LIB) 1, 2, 3. We hope that this striking discovery of solid-to-solid reaction will trigger new fundamental and applied research in carbonate electrolyte Li-S batteries. To the best of our knowledge, this is the first study to report the synthesis of stable γ-sulfur and its application in Li-S batteries. Through electrochemical characterization and post-mortem spectroscopy/ microscopy studies on cycled cells, we demonstrate an altered redox mechanism in our cells that reversibly converts monoclinic sulfur to Li 2S without the formation of intermediate polysulfides for the entire range of 4000 cycles. Carbonates are known to adversely react with the intermediate polysulfides and shut down Li-S batteries in first discharge. Here, we stabilize a rare monoclinic γ-sulfur phase within carbon nanofibers that enables successful operation of Lithium-Sulfur (Li-S) batteries in carbonate electrolyte for 4000 cycles. However, these works utilize ether electrolytes that are highly volatile severely hindering their practicality. It does not store any personal data.This past decade has seen extensive research in lithium-sulfur batteries with exemplary works mitigating the notorious polysulfide shuttling. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. This discovery is expected to bring the development of practical, high-efficiency lithium-sulfur batteries with solid electrolytes closer. The innovation proposed by Chinese researchers is the combination of carbon nanotubes with sulfur, as such a structure promotes better movement of ions and electrons within it, since pure sulfur is a poor conductor of electricity. This discovery brings lithium-sulfur batteries closer to commercial viability. Liquid and solid electrolyte versions equally struggled to overcome thousands of such cycles.Īccording to the main source, representatives of the Chinese Academy of Sciences have managed to develop a lithium-sulfur battery that retains up to 70% of its original capacity after 1400 charge and discharge cycles. At the same time, the existing prototype sulfur battery lines suffered from a short service life because they only survived a limited number of charge and discharge cycles. As explained Nikkei Asian ReviewIn lithium-sulfur batteries, the cathodes are made of sulfur, which reduces production costs and doubles the battery capacity compared to lithium-ion counterparts.
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