Enhancing Ionic Conductivity and Electrochemical Stability of Li3PS4 via Zn, F Co-Doping for All-Solid-State Li-S Batteries
Sulfide solid-state electrolytes have garnered considerable attention owing to their notable ionic conductivity and mechanical properties. However, achieving an electrolyte characterized by both high ionic conductivity and a stable interface between the electrode and electrolyte remains challenging, impeding its widespread application. In this work, we present a novel sulfide solid-state electrolyte, Li3.04P0.96Zn0.04S3.92F0.08, prepared through a solid-phase reaction, and explore its usage in all-solid-state lithium sulfur batteries (ASSLSBs). The findings reveal that the Zn, F co-doped solid-state electrolyte exhibits an ionic conductivity of 1.23 × 10-3 S cm-1 and a low activation energy (Ea) of 9.8 kJ mol-1 at room temperature, illustrating the aliovalent co-doping's facilitation of Li-ion migration. Furthermore, benefiting from the formation of a LiF-rich interfacial layer between the electrolyte and the Li metal anode, the Li/Li3.04P0.96Zn0.04S3.92F0.08/Li symmetrical cell exhibits critical current densities (CCDs) of up to 1 mA cm-2 and maintains excellent cycling stability. Finally, the assembled ASSLSBs exhibit an initial discharge capacity of 1295.7 mAh g-1 at a rate of 0.05 C and at room temperature. The cell maintains a capacity retention of 70.5% for more than 600 cycles at a high rate of 2 C, representing a substantial improvement compared to the cell with Li3PS4. This work provides a new idea for the design of solid-state electrolytes and ASSLSBs.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
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| Enthalten in: |
ACS applied materials & interfaces - 16(2024), 15 vom: 17. Apr., Seite 18843-18854 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Gao, Yuan [VerfasserIn] |
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| Links: |
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| Themen: |
All-solid-state lithium−sulfur batteries |
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| Anmerkungen: |
Date Revised 18.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/acsami.4c00358 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM370763394 |
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| 520 | |a Sulfide solid-state electrolytes have garnered considerable attention owing to their notable ionic conductivity and mechanical properties. However, achieving an electrolyte characterized by both high ionic conductivity and a stable interface between the electrode and electrolyte remains challenging, impeding its widespread application. In this work, we present a novel sulfide solid-state electrolyte, Li3.04P0.96Zn0.04S3.92F0.08, prepared through a solid-phase reaction, and explore its usage in all-solid-state lithium sulfur batteries (ASSLSBs). The findings reveal that the Zn, F co-doped solid-state electrolyte exhibits an ionic conductivity of 1.23 × 10-3 S cm-1 and a low activation energy (Ea) of 9.8 kJ mol-1 at room temperature, illustrating the aliovalent co-doping's facilitation of Li-ion migration. Furthermore, benefiting from the formation of a LiF-rich interfacial layer between the electrolyte and the Li metal anode, the Li/Li3.04P0.96Zn0.04S3.92F0.08/Li symmetrical cell exhibits critical current densities (CCDs) of up to 1 mA cm-2 and maintains excellent cycling stability. Finally, the assembled ASSLSBs exhibit an initial discharge capacity of 1295.7 mAh g-1 at a rate of 0.05 C and at room temperature. The cell maintains a capacity retention of 70.5% for more than 600 cycles at a high rate of 2 C, representing a substantial improvement compared to the cell with Li3PS4. This work provides a new idea for the design of solid-state electrolytes and ASSLSBs | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a all-solid-state lithium−sulfur batteries | |
| 650 | 4 | |a co-doped | |
| 650 | 4 | |a high ionic conductivity | |
| 650 | 4 | |a stable electrode−electrolyte interface | |
| 650 | 4 | |a sulfide solid-state electrolyte | |
| 700 | 1 | |a Gao, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Zhibin |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Yue |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Xiaolin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Fuhua |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Song, Depeng |e verfasserin |4 aut | |
| 700 | 1 | |a Si, Wenyan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Qing |e verfasserin |4 aut | |
| 700 | 1 | |a Yuan, Xun |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Jianfei |e verfasserin |4 aut | |
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