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Encasing Few-Layer MoS 2 within 2D Ordered Cubic Graphitic Cages to Smooth Trapping-Conversion of Lithium Polysulfides for Dendrite-Free Lithium-Sulfur Batteries.
- Source :
-
Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Aug; Vol. 20 (35), pp. e2402412. Date of Electronic Publication: 2024 Apr 22. - Publication Year :
- 2024
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Abstract
- The industrialization of lithium-sulfur (Li-S) batteries faces challenges due to the shuttling effect of lithium polysulfides (LiPSs) and the growth of lithium dendrites. To address these issues, a simple and scalable method is proposed to synthesize 2D membranes comprising a single layer of cubic graphitic cages encased with few-layer, curved MoS <subscript>2</subscript> . The distinctive 2D architecture is achieved by confining the epitaxial growth of MoS <subscript>2</subscript> within the open cages of a 2D-ordered mesoporous graphitic framework (MGF), resulting in MoS <subscript>2</subscript> @MGF heterostructures with abundant sulfur vacancies. The experimental and theoretical studies establish that these MoS <subscript>2</subscript> @MGF membranes can act as a multifunctional interlayer in Li-S batteries to boost their comprehensive performance. The inclusion of the MoS <subscript>2</subscript> @MGF interlayer facilitates the trapping and conversion kinetics of LiPSs, preventing their shuttling effect, while simultaneously promoting uniform lithium deposition to inhibit dendrite growth. As a result, Li-S batteries with the MoS <subscript>2</subscript> @MGF interlayer exhibit high electrochemical performance even under high sulfur loading and lean electrolyte conditions. This work highlights the potential of designing advanced MoS <subscript>2</subscript> -encased heterostructures as interlayers, offering a viable solution to the current limitations plaguing Li-S batteries.<br /> (© 2024 Wiley‐VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1613-6829
- Volume :
- 20
- Issue :
- 35
- Database :
- MEDLINE
- Journal :
- Small (Weinheim an der Bergstrasse, Germany)
- Publication Type :
- Academic Journal
- Accession number :
- 38647117
- Full Text :
- https://doi.org/10.1002/smll.202402412