期刊
JOURNAL OF POWER SOURCES
卷 195, 期 11, 页码 3668-3675出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.11.146
关键词
Pyrrolidinium ionic liquids; Poly(diallyldimethylammonium); bis(trifluoromethanesulfonyl)imide; N-Butyl-N-methylpyrrolidinium; bis(trifluoromethanesulfonyl)imide; Polymer electrolytes; Lithium polymer batteries
资金
- European Commission [NMP3-CT-2006-033181]
- Spanish MEC [2007-00007]
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 degrees 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 140mAh g(-1) at 40 degrees C with very good capacity retention up to medium rates. (C) 2009 Elsevier B.V. All rights reserved.
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