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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202008619
|2 doi
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|a pubmed24n1084.xml
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|a (DE-627)NLM325212236
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|a (NLM)33969571
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Wang, Hansen
|e verfasserin
|4 aut
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| 245 |
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|a Dual-Solvent Li-Ion Solvation Enables High-Performance Li-Metal Batteries
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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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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 22.06.2021
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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 Novel electrolyte designs to further enhance the lithium (Li) metal battery cyclability are highly desirable. Here, fluorinated 1,6-dimethoxyhexane (FDMH) is designed and synthesized as the solvent molecule to promote electrolyte stability with its prolonged -CF2 - backbone. Meanwhile, 1,2-dimethoxyethane is used as a co-solvent to enable higher ionic conductivity and much reduced interfacial resistance. Combining the dual-solvent system with 1 m lithium bis(fluorosulfonyl)imide (LiFSI), high Li-metal Coulombic efficiency (99.5%) and oxidative stability (6 V) are achieved. Using this electrolyte, 20 µm Li||NMC batteries are able to retain ≈80% capacity after 250 cycles and Cu||NMC anode-free pouch cells last 120 cycles with 75% capacity retention under ≈2.1 µL mAh-1 lean electrolyte conditions. Such high performances are attributed to the anion-derived solid-electrolyte interphase, originating from the coordination of Li-ions to the highly stable FDMH and multiple anions in their solvation environments. This work demonstrates a new electrolyte design strategy that enables high-performance Li-metal batteries with multisolvent Li-ion solvation with rationally optimized molecular structure and ratio
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|a Journal Article
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|a Coulombic efficiency
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|a Li-metal batteries
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|a anode-free batteries
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|a electrolytes
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|a fluorinated solvents
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|a Yu, Zhiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kong, Xian
|e verfasserin
|4 aut
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| 700 |
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|a Huang, William
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Zewen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mackanic, David G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Xinyi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qin, Jian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bao, Zhenan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cui, Yi
|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), 25 vom: 09. Juni, Seite e2008619
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:25
|g day:09
|g month:06
|g pages:e2008619
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|u http://dx.doi.org/10.1002/adma.202008619
|3 Volltext
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