BEGIN:VCALENDAR VERSION:2.0 PRODID:https://murmitoyen.com/events/vanille/udem/ X-WR-TIMEZONE:America/Montreal BEGIN:VEVENT UID:69dc75845b907 DTSTAMP:20260413T004804 DTSTART:20161012T110000 SEQUENCE:0 TRANSP:OPAQUE DTEND:20161012T123000 URL:https://murmitoyen.com/events/vanille/udem/detail/716010-conference-du- professeur-renaud-bouchet-lepmi-grenoble LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2 SUMMARY:Conférence du Professeur Renaud Bouchet (LEPMI-Grenoble) DESCRIPTION:Titre : Block Copolymers as Efficient Electrolytes in Lithium M etal Batteries Endroit : Pavillon J.-Armand Bombardier\, salle 1035 à  11 hHôte : Michaël Dollé \nCette conférence sera prononcée (en angla is) par le Professeur Renaud Bouchet du laboratoire d'Électrochimie et de Physico-chimie des Matériaux et des Interfaces\, Institut polytechniq ue de Grenoble. \nRésumé:Today the environment is a major society concer n and the polluting fossil energy consumption\, more and more expensive\, is a drag on our economy\, thereby the development of alternative transpor tation such as electric or hybrid vehicles\, has become a key need for a s ustainable long term development[1]. The increase of energy density necess ary to promote this future revolution imposes to develop “new” chemist ries for both the active electrode materials and electrolyte[2]\,[3]. Howe ver\, for large-scale applications a safety issue comes from the liquid el ectrolytes as they embedded organic solvents that can likely leak or gener ate flammable reactions. The use of a solid polymer electrolyte (SPE) coul d solve most of the safety issues encounter with liquid electrolyte. Howev er\, the development of SPE has been hampered by two hurdles i/ the inabil ity to design a SPE that has both a high ionic conductivity and good mecha nical properties3 and ii/ the motions of lithium ions carry only a small f raction of the overall ionic current which leads during battery operation to the formation of strong gradients of concentration with highly noxious effects like favored dendritic growth[4] and limited power performances. \ nIn this context\, we are developing nanostructured multifunctional block copolymer electrolytes (BCE)\, B-A-B comprising a central A block based on poly(ethylene oxide) (PEO) that brings ionic conductivity and a B block t hat brings other functionalities like mechanical properties\, electrochemi cal stability\, increase of transport number\, etc… Our approach in impr oving the performance of BCEs starting from neutral BCEs like PS-POE-PS[5] \,[6]\,[7] laden with a lithium salt to the single-ion BCEs (SIEL) compris ing grafted lithium trifluoromethanesulfonylimide (TFSILi)[8] on the B blo ck\, will be presented. Especially\, the impact of the BCEs architecture- composition\, chemistries of the PEO based block as well as of the B block \, on the physical properties such as the morphology\, the thermodynamic t ransitions\, the mechanic stability and the ion transport will be discusse d. At last\, for a complete panorama\, the results obtained with the best BCEs in battery prototypes with the aim of reducing the operation temperat ure will also be shown. \n[1] J. Tollefson\, Nature\, 456\, 2008\, 436-440 [2] F. Cheng\, J. Liang\, Z. Tao\, J. Chen\, Advanced Materials\, 23\, 20 11\, 1695-1715 [3] M. Armand\, J-M Tarascon\, Nature\, 451\, 2008\, 652-65 7 [4] J-N Chazalviel\, Physical Review A\, 42\, 1990\, 7355-7367 [5] E. Be audoin\, T. N. T. Phan\, M. Robinet et al.\, Langmuir 2013\, 29\, 10874− 10880 [6] R. Bouchet\, T. N. T. Phan\, E. Beaudoin et al.\, Macromolecules 2014\, 47\, PP2659-2665 [7] D. Devaux\, D. Glé\, T. N. T. Phan et al.\, Chem. Mat. 2015\, 27\, pp4682-4692 [8] R. Bouchet\, A. Aboulaich\, S. Mari a et al. Nature Materials\, 12\, 2013\, 452–457. \nInformation suppléme ntaireAnnonce PDF de la conférence \n  \n  END:VEVENT BEGIN:VTIMEZONE TZID:America/Montreal X-LIC-LOCATION:America/Montreal END:VTIMEZONE END:VCALENDAR