Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries
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...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/140754 |
| _version_ | 1824453605372985344 |
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| author | Wu, Chao Guo, Chunxian Wu, JingGao Ai, Wei Yu, Ting Li, Chang Ming |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wu, Chao Guo, Chunxian Wu, JingGao Ai, Wei Yu, Ting Li, Chang Ming |
| author_sort | Wu, Chao |
| collection | NTU |
| description | 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. |
| first_indexed | 2025-02-19T03:09:04Z |
| format | Journal Article |
| id | ntu-10356/140754 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:09:04Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1407542020-06-02T01:05:34Z Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries Wu, Chao Guo, Chunxian Wu, JingGao Ai, Wei Yu, Ting Li, Chang Ming School of Physical and Mathematical Sciences Science::Physics Lithium Sulfide Membrane Lithium–sulfur Batteries 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. MOE (Min. of Education, S’pore) 2020-06-02T01:05:34Z 2020-06-02T01:05:34Z 2018 Journal Article 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 2050-7488 https://hdl.handle.net/10356/140754 10.1039/c8ta00098k 2-s2.0-85046850459 18 6 8655 8661 en Journal of Materials Chemistry A © 2018 The Royal Society of Chemistry. All rights reserved. |
| spellingShingle | Science::Physics Lithium Sulfide Membrane Lithium–sulfur Batteries Wu, Chao Guo, Chunxian Wu, JingGao Ai, Wei Yu, Ting Li, Chang Ming Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title | Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title_full | Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title_fullStr | Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title_full_unstemmed | Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title_short | Construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium – sulfur batteries |
| title_sort | construction of a stable lithium sulfide membrane to greatly confine polysulfides for high performance lithium sulfur batteries |
| topic | Science::Physics Lithium Sulfide Membrane Lithium–sulfur Batteries |
| url | https://hdl.handle.net/10356/140754 |
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