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Stabilizing lithium metal using ionic liquids for long-lived batteries

Basile, A., Bhatt, A.I. and O'Mullane, A.P. 2016, Stabilizing lithium metal using ionic liquids for long-lived batteries, Nature communications, vol. 7, pp. 1-11, doi: 10.1038/ncomms11794.

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Title Stabilizing lithium metal using ionic liquids for long-lived batteries
Author(s) Basile, A.ORCID iD for Basile, A. orcid.org/0000-0001-5552-9591
Bhatt, A.I.
O'Mullane, A.P.
Journal name Nature communications
Volume number 7
Article ID 11794
Start page 1
End page 11
Total pages 11
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2016-06-13
ISSN 2041-1723
Summary Suppressing dendrite formation at lithium metal anodes during cycling is critical for the implementation of future lithium metal-based battery technology. Here we report that it can be achieved via the facile process of immersing the electrodes in ionic liquid electrolytes for a period of time before battery assembly. This creates a durable and lithium ion-permeable solid-electrolyte interphase that allows safe charge-discharge cycling of commercially applicable Li|electrolyte|LiFePO4 batteries for 1,000 cycles with Coulombic efficiencies >99.5%. The tailored solid-electrolyte interphase is prepared using a variety of electrolytes based on the N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide room temperature ionic liquid containing lithium salts. The formation is both time- and lithium salt-dependant, showing dynamic morphology changes, which when optimized prevent dendrite formation and consumption of electrolyte during cycling. This work illustrates that a simple, effective and industrially applicable lithium metal pretreatment process results in a commercially viable cycle life for a lithium metal battery.
Language eng
DOI 10.1038/ncomms11794
Field of Research 030604 Electrochemistry
030301 Chemical Characterisation of Materials
090403 Chemical Engineering Design
091205 Functional Materials
MD Multidisciplinary
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086662

Document type: Journal Article
Collections: Institute for Frontier Materials
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Citation counts: TR Web of Science Citation Count  Cited 15 times in TR Web of Science
Scopus Citation Count Cited 11 times in Scopus
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Created: Fri, 11 Nov 2016, 10:53:07 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.