Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability
The practical applications of lithium–sulfur (Li–S) batteries have been impeded by short cycling life and low sulfur utilization, resulting from the dissolution of intermediate lithium polysulfides into electrolytes and the large volume variation during cycling. This study presents a dual-confinemen...
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sg-ntu-dr.10356-1407512020-06-02T00:56:27Z Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability Wang, Jin Yang, Hao Guan, Cao Liu, Jilei Chen, Zhen Liang, Pei Shen, Zexiang School of Physical and Mathematical Sciences Science::Physics Space-confinement Encapsulation The practical applications of lithium–sulfur (Li–S) batteries have been impeded by short cycling life and low sulfur utilization, resulting from the dissolution of intermediate lithium polysulfides into electrolytes and the large volume variation during cycling. This study presents a dual-confinement strategy to efficiently entrap lithium polysulfides and alleviate large volume variation by using N-doped tube-in-tube structured carbon tubes anchored on a 3D scaffold of graphene foam through the synergistic effect of spatial restriction and chemical interaction. This unique carbon hybrid structure provides sufficient empty space to confine sulfur with high loading, accommodate large volume changes during lithiation and de-lithiation, and facilitate better immobilization of polysulfides as demonstrated by first-principles calculations. Therefore, enhanced capacities, ultralong-cycling stability, and improved rate capability even with a high sulfur loading (∼5.6 mg cm−2) could be achieved. MOE (Min. of Education, S’pore) 2020-06-02T00:56:27Z 2020-06-02T00:56:27Z 2017 Journal Article Wang, J., Yang, H., Guan, C., Liu, J., Chen, Z., Liang, P., & Shen, Z. (2017). Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability. Journal of Materials Chemistry A, 5(47), 24602-24611. doi:10.1039/c7ta08620b 2050-7488 https://hdl.handle.net/10356/140751 10.1039/c7ta08620b 2-s2.0-85037698572 47 5 24602 24611 en Journal of Materials Chemistry A © 2017 The Royal Society of Chemistry. All rights reserved. |
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Science::Physics Space-confinement Encapsulation Wang, Jin Yang, Hao Guan, Cao Liu, Jilei Chen, Zhen Liang, Pei Shen, Zexiang Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
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The practical applications of lithium–sulfur (Li–S) batteries have been impeded by short cycling life and low sulfur utilization, resulting from the dissolution of intermediate lithium polysulfides into electrolytes and the large volume variation during cycling. This study presents a dual-confinement strategy to efficiently entrap lithium polysulfides and alleviate large volume variation by using N-doped tube-in-tube structured carbon tubes anchored on a 3D scaffold of graphene foam through the synergistic effect of spatial restriction and chemical interaction. This unique carbon hybrid structure provides sufficient empty space to confine sulfur with high loading, accommodate large volume changes during lithiation and de-lithiation, and facilitate better immobilization of polysulfides as demonstrated by first-principles calculations. Therefore, enhanced capacities, ultralong-cycling stability, and improved rate capability even with a high sulfur loading (∼5.6 mg cm−2) could be achieved. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Wang, Jin Yang, Hao Guan, Cao Liu, Jilei Chen, Zhen Liang, Pei Shen, Zexiang |
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Article |
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Wang, Jin Yang, Hao Guan, Cao Liu, Jilei Chen, Zhen Liang, Pei Shen, Zexiang |
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Wang, Jin |
title |
Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
title_short |
Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
title_full |
Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
title_fullStr |
Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
title_full_unstemmed |
Space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
title_sort |
space-confinement and chemisorption co-involved in encapsulation of sulfur for lithium – sulfur batteries with exceptional cycling stability |
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2020 |
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https://hdl.handle.net/10356/140751 |
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1681056095357894656 |