Abstract
Recent developments in electric vehicles (EVs) and portable electronics, lithium-sulfur (Li-S) battery has emerged as a promising candidate due to its high theoretical energy density. To achieve the practical high energy density (~500 Wh kg-1) in Li-S battery, high active material (sulfur) loading (> 6 mg cm-2), effective sulfur utilization, and low electrolyte-to-sulfur (E:S) ratio (<3 μL mg-1) should be achieved. Primarily, high sulfur loading, low E:S ratio, high sulfur content, and an optimum current rate are needed to achieve high energy and power density. In this work, we experimentally investigate polysulfide conversion mechanism that takes place in Li-S battery under extreme, both electrochemical and operating, conditions. An extreme threshold with respect to maximum and minimum sulfur loading and E:S ratio of below 3 or close to zero are thoroughly investigated. It is observed that the underlying polysulfide conversions altered when cell was operated at extreme conditions (e.g. E:S ratio). Furthermore, this work is expected to provide a critical scientific insight through advanced characterization techniques (e.g. in-situ Raman spectroscopy) to mechanistically understand the reaction kinetics in Li-S battery.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.