Fast Lithium Ion Conductivity in Layered (Li-Ag)CrS2
Fast ionic conductors are of great importance for novel technologies in high-performance and rechargeable energy storage components with reliable safety and thermal stability. Here, we demonstrate a new concept of the pillar effect to construct two-dimensional (2D) fast Li+ conductors. Our developed layered LixAg1-xCrS2 (0 < x < 0.4) structure, with larger-radius Ag+ served as "pillars" to effectively rigidify the interlayer ionic channel, leads to multi-ion concerted migration behavior and thus contributes to low activation energy and fast Li+ diffusion. Consequently, the room-temperature ionic conductivity in (Li-Ag)CrS2 system reaches up to 19.6 mS·cm-1 for x is 0.31, which is comparable to that of currently best Li-ion conductors. Furthermore, the pillared structure exhibits unique ionic transport that the conductivity decreases as temperature elevated, which can be ascribed to the competition between Li+ and Ag+ migration through tetrahedral viods in 2D channel. We anticipated that pillar effect would pave a new way to explore new catalogue of Li superionic conductors.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:142 |
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| Enthalten in: |
Journal of the American Chemical Society - 142(2020), 43 vom: 28. Okt., Seite 18645-18651 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Peng, Jing [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Revised 28.10.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/jacs.0c08448 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM314755535 |
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| 500 | |a published: Print-Electronic | ||
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| 520 | |a Fast ionic conductors are of great importance for novel technologies in high-performance and rechargeable energy storage components with reliable safety and thermal stability. Here, we demonstrate a new concept of the pillar effect to construct two-dimensional (2D) fast Li+ conductors. Our developed layered LixAg1-xCrS2 (0 < x < 0.4) structure, with larger-radius Ag+ served as "pillars" to effectively rigidify the interlayer ionic channel, leads to multi-ion concerted migration behavior and thus contributes to low activation energy and fast Li+ diffusion. Consequently, the room-temperature ionic conductivity in (Li-Ag)CrS2 system reaches up to 19.6 mS·cm-1 for x is 0.31, which is comparable to that of currently best Li-ion conductors. Furthermore, the pillared structure exhibits unique ionic transport that the conductivity decreases as temperature elevated, which can be ascribed to the competition between Li+ and Ag+ migration through tetrahedral viods in 2D channel. We anticipated that pillar effect would pave a new way to explore new catalogue of Li superionic conductors | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Pan, Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Jiajing |e verfasserin |4 aut | |
| 700 | 1 | |a Su, Yueqi |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Yuqiao |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Xiaojun |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Changzheng |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Yi |e verfasserin |4 aut | |
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