Xie, Fanxuan ; Xiong, Man ; Liu, Jiapeng ; Qian, Jingwen ; Mei, Tao ; Li, Jinghua ; Wang, Jianyin ; Yu, Li ; Hofmann, Jan P. ; Wang, Xianbao (2022):
A Multi‐Functional Separator for Li‐S Batteries: WS₂@C Nanoflowers Catalyze the Rapid Recycling of Lithium Polysulfides by Polar Attraction. (Publisher's Version)
In: ChemElectroChem, 9 (15), Wiley-VCH, e-ISSN 2196-0216,
DOI: 10.26083/tuprints-00022445,
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Item Type: | Article |
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Origin: | Secondary publication DeepGreen |
Status: | Publisher's Version |
Title: | A Multi‐Functional Separator for Li‐S Batteries: WS₂@C Nanoflowers Catalyze the Rapid Recycling of Lithium Polysulfides by Polar Attraction |
Language: | English |
Abstract: | Featuring high theoretical capacity, environmental friendliness and low cost, lithium‐sulfur (Li‐S) batteries become promising alternatives to satisfy the growing demand for energy storage. To boost their energy density for practical application, modified separators are needed to suppress shuttle effects resulting from the solubility of lithium polysulfides (LiPSs). Herein, we modified traditional polypropylene (PP) separators with functional WS₂@C nanoflower composites (WS₂@C‐PP). They can effectively adsorb LiPSs and catalyze their conversion on the edge sites of the WS₂. Also, the unique construction of a carbon layer coating on the WS₂ nanoflowers combines active sites and conducting properties. The material benefits the reversibility of redox reactions and reutilization of active materials. With the WS₂@C‐PP separator, the cell displays improved cycling stability and rate performance. When cycling at 0.1 C, the cell discharges a capacity of up to 1475 mAh g⁻¹, and it contributes 943 mAh g⁻¹ originally at 1 C, with a decay rate of only 0.07 % after 500 cycles. Our work highlights the potential of functional separators to advance the properties of Li‐S batteries. |
Journal or Publication Title: | ChemElectroChem |
Volume of the journal: | 9 |
Issue Number: | 15 |
Place of Publication: | Darmstadt |
Publisher: | Wiley-VCH |
Collation: | 10 Seiten |
Uncontrolled Keywords: | catalyzation, flower-like structure, lithium-sulfur battery, synergistic effect, WS₂ nanosheets |
Classification DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Surface Science |
Date Deposited: | 10 Oct 2022 12:54 |
Last Modified: | 17 Oct 2022 09:23 |
DOI: | 10.26083/tuprints-00022445 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-224457 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/22445 |
PPN: | 50036902X |
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