Li+ mobility powered by a crystal compound for fast Li-S chemistry
Placing blocking layers between electrodes has shown paramount prospects in suppressing the shuttle effect of Li-S batteries, but the associated ionic transport would be a concurrent obstacle. Herein, we present a Li-based crystal composited with carbon (LiPN2C) by a one-step annealing of Li+ absorbed melamine polyphosphate, which simultaneously achieves alleviated polysulfide-shuttling and facilitated Li+ transport. As a homologous crystal, LiPN2 with abundant lithiophilic sites makes Li+ transport more efficient and sustainable. With a LiPN2@C-modified separator, the Li2S cathode exhibits a much-lower activation potential of 2.4 V and a high-rate capacity of 519 mA h g-1 at 2C. Impressively, the battery delivers a capacity of 726 mA h g-1 at 0.5C with a low decay rate of 0.25% per cycle during 100 continuous cycles.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:59 |
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| Enthalten in: |
Chemical communications (Cambridge, England) - 59(2023), 81 vom: 10. Okt., Seite 12140-12143 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chen, Ben [VerfasserIn] |
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| Anmerkungen: |
Date Revised 10.10.2023 published: Electronic Citation Status Publisher |
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| doi: |
10.1039/d3cc03535b |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM362368376 |
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| 520 | |a Placing blocking layers between electrodes has shown paramount prospects in suppressing the shuttle effect of Li-S batteries, but the associated ionic transport would be a concurrent obstacle. Herein, we present a Li-based crystal composited with carbon (LiPN2C) by a one-step annealing of Li+ absorbed melamine polyphosphate, which simultaneously achieves alleviated polysulfide-shuttling and facilitated Li+ transport. As a homologous crystal, LiPN2 with abundant lithiophilic sites makes Li+ transport more efficient and sustainable. With a LiPN2@C-modified separator, the Li2S cathode exhibits a much-lower activation potential of 2.4 V and a high-rate capacity of 519 mA h g-1 at 2C. Impressively, the battery delivers a capacity of 726 mA h g-1 at 0.5C with a low decay rate of 0.25% per cycle during 100 continuous cycles | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Li, Boxin |e verfasserin |4 aut | |
| 700 | 1 | |a Bi, Jingxuan |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Hongfang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Siying |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Lei |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Linghai |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Jinmeng |e verfasserin |4 aut | |
| 700 | 1 | |a Du, Zhuzhu |e verfasserin |4 aut | |
| 700 | 1 | |a Ai, Wei |e verfasserin |4 aut | |
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