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Ionic liquid electrolyte for lithium metal batteries : physical, electrochemical, and interfacial studies of N-Methyl-N-butylmorpholinium Bis(fluorosulfonyl)imide Lane, George H., Bayley, Paul M., Clare, Bronya R., Best, Adam S., MacFarlane, Douglas R., Forsyth, Maria and Hollenkamp, Anthony F. 2010, Ionic liquid electrolyte for lithium metal batteries : physical, electrochemical, and interfacial studies of N-Methyl-N-butylmorpholinium Bis(fluorosulfonyl)imide, Journal of physical chemistry part c : nanomaterials and interfaces, vol. 114, no. 49, pp. 21775-21785. Attached Files Name Description MIMEType Size Downloads Title Ionic liquid electrolyte for lithium metal batteries : physical, electrochemical, and interfacial studies of N-Methyl-N-butylmorpholinium Bis(fluorosulfonyl)imide Formatted title Ionic liquid electrolyte for lithium metal batteries : physical, electrochemical, and interfacial studies of N-Methyl-N-butylmorpholinium Bis(fluorosulfonyl)imide Author(s) Lane, George H. Bayley, Paul M. Clare, Bronya R. Best, Adam S. MacFarlane, Douglas R. Forsyth, Maria Hollenkamp, Anthony F. Journal name Journal of physical chemistry part c : nanomaterials and interfaces Volume number 114 Issue number 49 Start page 21775 End page 21785 Publisher American Chemical Society Place of publication Washington, D.C. Publication date 2010 ISSN 1932-7447 1932-7455 1089-5639 1520-6106 1948-7185 Summary The ionic liquid (IL) N-methyl-N-butylmorpholinium bis(fluorosulfonyl)imide (C4mmor FSI) is examined from physical and electrochemical perspectives. Pulsed field gradient NMR spectroscopy shows that ion diffusivities are low compared with similar, non-ethereal ILs. Ionicity values indicate that above room temperature, less than 50% of ions contribute to conductivity. Lithium cycling in symmetrical cells using a C4mmor FSI-based electrolyte is best demonstrated at elevated temperatures. Specific capacities of 130 mAh g−1 are achieved in a Li−LiFePO4 battery at 85 °C. FT-IR spectroscopic investigations of lithium electrodes suggest the presence of alkoxide species in the solid electrolyte interphase (SEI), implying a ring-opening reaction of C4mmor with lithium metal. In contrast, the SEI derived from N-methyl-N-propylpiperidinium FSI lacks the alkoxide signature but shows signs of alkyl unsaturation, and the activation energy for Li+ transport through this SEI is slightly lower than that for the C4mmor-derived SEI. Our detailed findings give insight into the capabilities and limitations of rechargeable lithium metal batteries utilizing a C4mmor FSI electrolyte. Language eng Field of Research 039999 Chemical Sciences not elsewhere classified Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2010 American Chemical Society Persistent URL http://hdl.handle.net/10536/DRO/DU:30039934 Document type: Journal Article Collection: Institute for Technology Research and Innovation Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Tue, 08 Nov 2011, 11:33:52 EST Tue, 08 Nov 2011, 11:46:29 EST Tue, 08 Nov 2011, 11:48:12 EST Filtered Full Citation counts:   Cited 22 times in TR Web of Science Cited 23 times in Scopus Search Google Scholar Access Statistics: 126 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Tue, 08 Nov 2011, 11:33:45 EST by Leanne Swaneveld

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