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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202307651
|2 doi
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|a pubmed24n1270.xml
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|a (DE-627)NLM365014885
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|a (NLM)38010278
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|a DE-627
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|c DE-627
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|a eng
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|a Zhang, Shilin
|e verfasserin
|4 aut
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|a Palygorskite-Derived Ternary Fluoride with 2D Ion Transport Channels for Ampere Hour-Scale Li-S Pouch Cell with High Energy Density
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 25.01.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Although various excellent electrocatalysts/adsorbents have made notable progress as sulfur cathode hosts on the lithium-sulfur (Li-S) coin-cell level, high energy density (WG ) of the practical Li-S pouch cells is still limited by inefficient Li-ion transport in the thick sulfur cathode under low electrolyte/sulfur (E/S) and negative/positive (N/P) ratios, which aggravates the shuttle effect and sluggish redox kinetics. Here a new ternary fluoride MgAlF5 ·2H2 O with ultrafast ion conduction-strong polysulfides capture integration is developed. MgAlF5 ·2H2 O has an inverse Weberite-type crystal framework, in which the corner-sharing [AlF6 ]-[MgF4 (H2 O)2 ] octahedra units extend to form two-dimensional Li-ion transport channels along the [100] and [010] directions, respectively. Applied as the cathode sulfur host, the MgAlF5 ·2H2 O lithiated by LiTFSI (lithium salt in Li-S electrolyte) acts as a fast ionic conductor to ensure efficient Li-ion transport to accelerate the redox kinetics under high S loadings and low E/S and N/P. Meanwhile, the strong polar MgAlF5 ·2H2 O captures polysulfides by chemisorption to suppress the shuttle effect. Therefore, a 1.97 A h-level Li-S pouch cell achieves a high WG of 386 Wh kg-1 . This work develops a new-type ionic conductor, and provides unique insights and new hosts for designing practical Li-S pouch cells
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|a Journal Article
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|a high energy densities
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|a ionic transport channels
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|a lithium-sulfur pouch cells
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|a natural mineral
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|a polymetallic fluoride
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|a Sarwar, Muhammad Tariq
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Gang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jiang, Zhiyi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tang, Aidong
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Huaming
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 4 vom: 27. Jan., Seite e2307651
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:4
|g day:27
|g month:01
|g pages:e2307651
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|u http://dx.doi.org/10.1002/adma.202307651
|3 Volltext
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