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|a 10.1002/adma.202207932
|2 doi
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|a pubmed24n1159.xml
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|a (DE-627)NLM347989934
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|a (NLM)36284477
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Yin, Yijie
|e verfasserin
|4 aut
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|a Ultralow-Temperature Li/CFx Batteries Enabled by Fast-Transport and Anion-Pairing Liquefied Gas Electrolytes
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|c 2023
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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 Completed 20.01.2023
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|a Date Revised 20.01.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Lithium fluorinated-carbon (Li/CFx ) is one of the most promising chemistries for high-energy-density primary energy-storage systems in applications where rechargeability is not required. Though Li/CFx demonstrates high energy density (>2100 Wh kg-1 ) under ambient conditions, achieving such a high energy density when exposed to subzero temperatures remains a challenge, particularly under high current density. Here, a liquefied gas electrolyte with an anion-pair solvation structure based on dimethyl ether with a low melting point (-141 °C) and low viscosity (0.12 mPa s, 20 °C), leading to high ionic conductivity (>3.5 mS cm-1 ) between -70 and 60 °C is reported. Besides that, through systematic X-ray photoelectron spectroscopy integrated with transmission electron microscopy characterizations, the interface of CFx is evaluated for low-temperature performance. The fast transport and anion-pairing solvation structure of the electrolyte are concluded to bring about reduced charge-transfer resistance at low temperatures, which results in significantly enhanced performance of Li/CFx cells (1690 Wh kg-1 , -60 °C based on active materials). Utilizing 50 mg cm-2 loading electrodes, the Li/CFx still displays 1530 Wh kg-1 at -60 °C. This work provides insights into the electrolyte design that may overcome the operational limits of batteries in extreme environments
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|a Journal Article
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|a anion-pairing and fast-transport electrolytes
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|a electrode interfaces
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|a lithium-fluorinated carbon primary batteries
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|a thick loading electrodes
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|a ultralow temperature and high current operation
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|a Holoubek, John
|e verfasserin
|4 aut
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|a Liu, Alex
|e verfasserin
|4 aut
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|a Sayahpour, Baharak
|e verfasserin
|4 aut
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|a Raghavendran, Ganesh
|e verfasserin
|4 aut
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|a Cai, Guorui
|e verfasserin
|4 aut
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|a Han, Bing
|e verfasserin
|4 aut
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|a Mayer, Matthew
|e verfasserin
|4 aut
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|a Schorr, Noah B
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|4 aut
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|a Lambert, Timothy N
|e verfasserin
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|a Harrison, Katharine L
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|4 aut
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|a Li, Weikang
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|4 aut
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|a Chen, Zheng
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|a Meng, Y Shirley
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 3 vom: 15. Jan., Seite e2207932
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:3
|g day:15
|g month:01
|g pages:e2207932
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|u http://dx.doi.org/10.1002/adma.202207932
|3 Volltext
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