Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability
Lithium‑sulfur batteries have attracted significant attention as next-generation energy storage solutions due to their exceptional theoretical energy density (2600 Wh/kg) and economic viability. However, two fundamental challenges have hindered their practical application: the formation of lithium d...
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Elsevier
2025-06-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248125000657 |
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| author | PeiHua Wang Wendong Chen Kai Qu |
| author_facet | PeiHua Wang Wendong Chen Kai Qu |
| author_sort | PeiHua Wang |
| collection | DOAJ |
| description | Lithium‑sulfur batteries have attracted significant attention as next-generation energy storage solutions due to their exceptional theoretical energy density (2600 Wh/kg) and economic viability. However, two fundamental challenges have hindered their practical application: the formation of lithium dendrites at the anode interface, which compromises safety and longevity, and the “shuttle effect” of polysulfide intermediates at the cathode, resulting in capacity deterioration and compromised cycling performance.This study presents an innovative bifunctional separator design that simultaneously addresses these critical limitations through interface engineering. The separator architecture features a rationally designed vanadium disulfide (VS₂) composite layer functionalized with boron nitride nanosheets at the anode interface, which effectively suppresses dendrite nucleation and growth. Concurrently, at the cathode interface, a lithium aluminum titanium phosphate/polymethyl methacrylate/polyvinylidene fluoride (LATP/PMMA/PVDF) composite structure has been engineered to enable effective polysulfide confinement and enhance electrochemical reaction kinetics.This bifunctional separator demonstrates excellent electrochemical performance, achieving a specific capacity of 677.8 mAh g−1 at 2C rate while maintaining exceptional cycling stability over 800 cycles. These results represent a significant advancement toward the commercial realization of high-performance lithium‑sulfur batteries. |
| format | Article |
| id | doaj-art-9d5b628c61f54f099eee842b685cfbea |
| institution | DOAJ |
| issn | 1388-2481 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj-art-9d5b628c61f54f099eee842b685cfbea2025-08-20T03:09:19ZengElsevierElectrochemistry Communications1388-24812025-06-0117510792610.1016/j.elecom.2025.107926Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stabilityPeiHua Wang0Wendong Chen1Kai Qu2Science and Engineering & Institute for Electrochemical Energy Storage, Nanjing Tech University, Nanjing 211816, Jiangsu Province, China; School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, Hubei Province, China; Corresponding author.Science and Engineering & Institute for Electrochemical Energy Storage, Nanjing Tech University, Nanjing 211816, Jiangsu Province, ChinaScience and Engineering & Institute for Electrochemical Energy Storage, Nanjing Tech University, Nanjing 211816, Jiangsu Province, ChinaLithium‑sulfur batteries have attracted significant attention as next-generation energy storage solutions due to their exceptional theoretical energy density (2600 Wh/kg) and economic viability. However, two fundamental challenges have hindered their practical application: the formation of lithium dendrites at the anode interface, which compromises safety and longevity, and the “shuttle effect” of polysulfide intermediates at the cathode, resulting in capacity deterioration and compromised cycling performance.This study presents an innovative bifunctional separator design that simultaneously addresses these critical limitations through interface engineering. The separator architecture features a rationally designed vanadium disulfide (VS₂) composite layer functionalized with boron nitride nanosheets at the anode interface, which effectively suppresses dendrite nucleation and growth. Concurrently, at the cathode interface, a lithium aluminum titanium phosphate/polymethyl methacrylate/polyvinylidene fluoride (LATP/PMMA/PVDF) composite structure has been engineered to enable effective polysulfide confinement and enhance electrochemical reaction kinetics.This bifunctional separator demonstrates excellent electrochemical performance, achieving a specific capacity of 677.8 mAh g−1 at 2C rate while maintaining exceptional cycling stability over 800 cycles. These results represent a significant advancement toward the commercial realization of high-performance lithium‑sulfur batteries.http://www.sciencedirect.com/science/article/pii/S1388248125000657Lithium‑sulfur batteriesSulfur cathodeLithium anodeSeparatorLithium ion distribution |
| spellingShingle | PeiHua Wang Wendong Chen Kai Qu Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability Electrochemistry Communications Lithium‑sulfur batteries Sulfur cathode Lithium anode Separator Lithium ion distribution |
| title | Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability |
| title_full | Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability |
| title_fullStr | Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability |
| title_full_unstemmed | Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability |
| title_short | Vanadium disulfide-modified lithium aluminum titanium phosphate/polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium-sulfur batteries: A synergistic strategy for enhanced electrochemical performance and interfacial stability |
| title_sort | vanadium disulfide modified lithium aluminum titanium phosphate polymethyl methacrylate composite separator with hierarchical interface architecture for advanced lithium sulfur batteries a synergistic strategy for enhanced electrochemical performance and interfacial stability |
| topic | Lithium‑sulfur batteries Sulfur cathode Lithium anode Separator Lithium ion distribution |
| url | http://www.sciencedirect.com/science/article/pii/S1388248125000657 |
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