Abstract
Polytungstates uniformly embedding into highly-conductive CNFs present joint contribution of chemical absorbing and physical blocking to suppressing the shuttling of polysulfides. Lithium-sulfur (Li-S) battery is regarded as one of the most fascinating candidates for energy storage due to its dominant advantage of high energy density. However, the shuttling effect of soluble polysulfides and low electrical conductivity of sulfur and Li 2 S still hinder its commercialization. In this work, high electrical-conductive carbon nanofibers (CNFs) with uniformly embedded polytungstates (HPW@CNFs) are proposed for advanced Li-S batteries. H 3 PW 12 O 40 (HPW) is a kind of molecular nano-sized metal cluster which contains rich Lewis acid/base sites that can stabilize polysulfide effectively through chemical bonding, while CNFs play the role of physical barriers for polysulfides and transmission channel for electrons. The HPW@CNFs/S cathode shows an ultra-stable cycling performance with extremely small decay rate of 0.015% per cycle over 400 cycles at 0.5 C.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
