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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202100404
|2 doi
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|a pubmed25n1081.xml
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|a (DE-627)NLM324528086
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|a (NLM)33899278
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|a DE-627
|b ger
|c DE-627
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|a eng
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| 100 |
1 |
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|a Han, Bing
|e verfasserin
|4 aut
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|a Poor Stability of Li2 CO3 in the Solid Electrolyte Interphase of a Lithium-Metal Anode Revealed by Cryo-Electron Microscopy
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|c 2021
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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
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|2 rdacarrier
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|a Date Revised 01.06.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a The solid electrolyte interphase (SEI) dictates the cycling stability of lithium-metal batteries. Here, direct atomic imaging of the SEI's phase components and their spatial arrangement is achieved, using ultralow-dosage cryogenic transmission electron microscopy. The results show that, surprisingly, a lot of the deposited Li metal has amorphous atomic structure, likely due to carbon and oxygen impurities, and that crystalline lithium carbonate is not stable and readily decomposes when contacting the lithium metal. Lithium carbonate distributed in the outer SEI also continuously reacts with the electrolyte to produce gas, resulting in a dynamically evolving and porous SEI. Sulfur-containing additives cause the SEI to preferentially generate Li2 SO4 and overlithiated lithium sulfate and lithium oxide, which encapsulate lithium carbonate in the middle, limiting SEI thickening and enhancing battery life by a factor of ten. The spatial mapping of the SEI gradient amorphous (polymeric → inorganic → metallic) and crystalline phase components provides guidance for designing electrolyte additives
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|a Journal Article
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|a Li-metal anodes
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|a Li-metal batteries
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4 |
|a cycling stability
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| 650 |
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4 |
|a low-dose imaging
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4 |
|a solid electrolyte interphase
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1 |
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|a Zhang, Zhen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zou, Yucheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Kang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Guiyin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Hong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Meng, Hong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Deng, Yonghong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Ju
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, Meng
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 22 vom: 11. Juni, Seite e2100404
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:22
|g day:11
|g month:06
|g pages:e2100404
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202100404
|3 Volltext
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|d 33
|j 2021
|e 22
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|c 06
|h e2100404
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