|Title||Solvent-free, PYR1aTFSI ionic liquids-based ternary polymer electrolyte systems. II. Battery tests|
|Publication Type||Presentazione a Congresso|
|Year of Publication||2008|
|Authors||Appetecchi, Giovanni Battista, Kim G.-T., Montanino M., Alessandrini F., and Passerini S.|
|Conference Name||ECS Transactions|
|Conference Location||Washington, DC|
|Keywords||Battery tests, Bis(trifluoromethanesulfonyl)imide, Blood vessel prostheses, Coulombic efficiencies, Electrolytes, Higher temperatures, Ionic liquids, Ionization of liquids, Ions, life cycle, Lithium, Lithium alloys, Lithium compounds, Long cycles, Optimum performances, Polymer batteries, Polymer electrolytes, Pyrrolidinium, Rate discharges, Room temperatures, Solvents, Ternary electrolytes|
In this manuscript are reported the battery tests of ternary PEO electrolytes containing N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid. The results of the tests show that lithium-metal, solvent-free batteries based on these ternary electrolytes are able to deliver the full capacity in low-rate discharge C/50 rate at room temperature. Optimum performance, however, is obtained at slightly higher temperatures (40°C). The performance of ionic liquid-containing polymer batteries at 40°C are comparable to analogous ionic liquid-free Li/LiFePO4 systems at 90°C. The P(EO)10LiTFSI + 0.96 PYR1n4TFSI batteries showed long cycle life and high coulombic efficiency. © The Electrochemical Society.