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NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.jpowsour.2007.06. 044 Journal of Power Sources, 174, 2, pp. 1193Sources, 174, 2, pp. -1196Sources, 174, 2, pp. , 2007 Plastic crystalline phases of crown ether:salt complexes and their utilization in lithium-metal batteries Abouimrane, Ali; Alarco, Pierre-Jean; Abu-Lebdeh, Yaser; Davidson, Isobel; Armand, Michel
AbstractWe have shown that crown ether complexes with the lithium salt, lithium bis-(trifluoromethanesulphonyl) imide (LiTFSI), are plastic crystals as evidenced by DSC and their mechanical properties. The conductivity of the complexes was measured and found to vary as a function of crown ether:salt molar ratio. Our study of the (18-Crown-6)-LiTFSI (1/1) solid complex showed that it has a high conductivity reaching ∼10 −4 Scm −1at 50• C and an electrochemical stability of over 4 V enabling its use in a lithium-metal battery. A lithium battery with 1:1 (18-Crown-6)-LiTFSI as electrolyte was assembled, tested, and found to exhibit reversible Li + transport. Crown