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Novel Highly Conductive Polymer Electrolytes for Li-Ion Batteries Applications
In this work we developed a novel class of anionic epoxy polymer electrolytes, with noteable properties (thermotropic liquid crystalline), involving a new mode of Li+ mobility. The thermodynamic encryption given by the nature of different segment of the polymer lead to a self-organization of the polymer (columnar, lamellar, gyroid …). We propose that the anionic sites are thus organized for efficient Li-conduction by a hoping mechanism as presented in the figure below. The synthesis and electrochemical properties of this new crystalline polyelectrolyte were investigated. The preliminary results showed a RT conductivity over 0.1 mS.cm-1.
[i] 4-styrenesulfonyl)(trifluoromethanesulfonyl)imide
[1] Meziane, R; Bonnet, J.P; Courty, M; Djellab, K; Armand, M. Electrochimica Acta, 2011, 57, 14
[2] Bouchet, R; Maria, S; Meziane, R. ; Aboulaich, A ; Lienafa, L ; Bonnet, J.P ; Phan, T. N. T. ; Bertin, D ; Gigmes, D. ; Devaux, D; Denoyel, R ; Armand, M. Nature Materials, 2013,12,452