|Title||Ternary polymer electrolytes containing pyrrolidinium-based polymeric ionic liquids for lithium batteries|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2010|
|Authors||Appetecchi, Giovanni Battista, Kim G.-T., Montanino M., Carewska M., Marcilla R., Mecerreyes D., and De Meatza I.|
|Journal||Journal of Power Sources|
|Keywords||Bis(trifluoromethane sulfonyl)imide, Electrochemical properties, Ionic liquids, Ionization of liquids, Ions, Lithium, Lithium polymer batteries, Poly(diallyldimethylammonium) bis(trifluoromethanesulfonyl)imide, Polyelectrolytes, Polymer electrolyte, Pyrrolidinium|
The electrochemical properties of solvent-free, ternary polymer electrolytes based on a novel poly(diallyldimethylammonium) bis(trifluoromethanesulfonyl)imide polymeric ionic liquid (PIL) as polymer host and incorporating PYR14TFSI ionic liquid and LiTFSI salt are reported. The PIL-LiTFSI-PYR14TFSI electrolyte membranes were found to be chemically stable even after prolonged storage times in contact with lithium anode and thermally stable up to 300 °C. Particularly, the PIL-based electrolytes exhibited acceptable room temperature conductivity with wide electrochemical stability window, time-stable interfacial resistance values and good lithium stripping/plating performance. Preliminary battery tests have shown that Li/LiFePO4 solid-state cells are capable to deliver above 140 mAh g-1 at 40 °C with very good capacity retention up to medium rates. © 2009 Elsevier B.V. All rights reserved.
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