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|Title:||Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries||Authors:||Wu, Chao
Li, Chang Ming
|Keywords:||Science::Physics||Issue Date:||2018||Source:||Wu, C., Guo, C., Wu, J., Ai, W., Yu, T., & Li, C. M. (2018). Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries. Journal of Materials Chemistry A, 6(18), 8655-8661. doi:10.1039/c8ta00098k||Journal:||Journal of Materials Chemistry A||Abstract:||A stable lithium sulfide membrane is constructed in situ to wrap the mixed sulfur/C material surface of a lithium–sulfur battery (LSB) by delicately tuning the galvanostatic discharge current. The membrane offers unique and selective channels which allow only ions/small sulfides to pass through and confine polysulfide transport, restricting the shuttle effect, and thus providing a large capacity of 685 mA h g−1 at 1C and a long-lasting cycling stability (0.03% capacity decay per cycle). This LSB, which is much superior to the same sulfur-loaded battery without the membrane (0.26% capacity decay per cycle over 207 cycles and 213 mA h g−1 at 1C), is the best among all reported plain carbonaceous host material-based LSBs. The mechanism responsible for such dramatically improved performance is discussed in detail. This work not only offers a facile approach to greatly improve the capacity and stability of LSBs for practical applications but also offers new scientific insights into LSB design.||URI:||https://hdl.handle.net/10356/140754||ISSN:||2050-7488||DOI:||10.1039/c8ta00098k||Rights:||© 2018 The Royal Society of Chemistry. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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