Polymer electrolytes based on poly(ethylene glycol) dimethyl ether and the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate: Preparation, physico-chemical characterization, and theoretical study

Abstract Polymer electrolytes based on poly(ethylene glycol) dimethyl ether (PEGdME) and the ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF 6 ) have been prepared and characterized by different techniques. Coordination of the IL by the polymer occurs mainly in the amorphous phase. This finding was correlated with previous theoretical investigations of a similar model for polymer electrolytes based on poly(ethylene oxide), PEO, and IL. It has been obtained ionic conductivity σ  ∼ 10 −3  S cm −1 for the polymer electrolyte with 35 wt% of IL at 100 °C. The same order of magnitude for σ was obtained by molecular dynamics simulation of PEO/IL. This work demonstrates consistency between experimental and theoretical results for polymer electrolytes containing ionic liquids.

[1]  Masayoshi Watanabe,et al.  Highly conductive polymer electrolytes prepared by in situ polymerization of vinyl monomers in room temperature molten salts , 2000 .

[2]  H. Ohno,et al.  Preparation of thermally stable polymer electrolytes from imidazolium-type ionic liquid derivatives , 2005 .

[3]  P. Suarez,et al.  Selective Catalytic Hydrodimerization of 1,3-Butadiene by Palladium Compounds Dissolved in Ionic Liquids , 1998 .

[4]  W. Henderson,et al.  Characterization of Solvent-Free Polymer Electrolytes Consisting of Ternary PEO – LiTFSI – PYR14 TFSI , 2006 .

[5]  S. W. Leeuw,et al.  On the dynamics of PEO-NaI polymer electrolytes , 2001 .

[6]  M. Grätzel,et al.  Hydrophobic, Highly Conductive Ambient-Temperature Molten Salts. , 1996, Inorganic chemistry.

[7]  S. S. Sekhon,et al.  Ion conducting behaviour of polymer electrolytes containing ionic liquids , 2005 .

[8]  M. Armand,et al.  Issues and challenges facing rechargeable lithium batteries , 2001, Nature.

[9]  H. Ohno,et al.  Effect of cation structure on the electrochemical and thermal properties of ion conductive polymers obtained from polymerizable ionic liquids , 2006 .

[10]  G. Silva,et al.  Polymer blend for electrolyte and electrode coatings , 2005 .

[11]  Joon-Ho Shin,et al.  PEO-Based Polymer Electrolytes with Ionic Liquids and Their Use in Lithium Metal-Polymer Electrolyte Batteries , 2005 .

[12]  Sun-Hwa Yeon,et al.  N-Butyl-N-methylmorpholinium bis(trifluoromethanesulfonyl)imide–PVdF(HFP) gel electrolytes , 2005 .

[13]  S. S. Sekhon,et al.  Polymer electrolytes based on room temperature ionic liquid: 2,3-dimethyl-1-octylimidazolium triflate. , 2005, The journal of physical chemistry. B.

[14]  I. R. Mcdonald,et al.  Theory of simple liquids , 1998 .

[15]  Hiroyuki Ohno,et al.  Improved ionic conductivity of nitrile rubber/ionic liquid composites , 2005 .

[16]  M. Ribeiro,et al.  Structure of ionic liquids of 1-alkyl-3-methylimidazolium cations: a systematic computer simulation study. , 2004, The Journal of chemical physics.

[17]  G. Silva,et al.  Electrochemical behavior of polyurethane ether electrolytes/carbon black composites and application to double layer capacitor , 2001 .

[18]  M. Ribeiro,et al.  Single particle dynamics in ionic liquids of 1-alkyl-3-methylimidazolium cations. , 2005, The Journal of chemical physics.

[19]  J. Magee,et al.  Thermodynamic Properties of 1-Butyl-3-methylimidazolium Hexafluorophosphate in the Condensed State , 2003 .

[20]  A. Balducci,et al.  The use of ionic liquids as solvent-free green electrolytes for hybrid supercapacitors , 2006 .

[21]  R. L. Moreira,et al.  Structure and conductivity in polydioxolane/LiCF3SO3 electrolytes , 2001 .

[22]  S. A. Agnihotry,et al.  Solid polymer electrolytes based on polyethylene oxide-silver thiocyanate , 1995 .

[23]  J. Dupont.  On the solid, liquid and solution structural organization of imidazolium ionic liquids , 2004 .

[24]  A. Lewandowski,et al.  New composite solid electrolytes based on a polymer and ionic liquids , 2004 .

[25]  C. Magon,et al.  Nuclear magnetic resonance study of PEO-based composite polymer electrolytes , 2001 .

[26]  E. Bortel,et al.  Relation between crystallinity degree and stability in solid state of high molecular weight poly(ethylene oxide)s , 1979 .

[27]  M. Meyerhoff,et al.  More Biocompatible Electrochemical Sensors Using Nitric Oxide Release Polymers , 1999 .

[28]  M. Watanabe,et al.  Conductivity study on ionic liquid/polymer complexes , 1996 .

[29]  Thomas Zawodzinski,et al.  Introduction: batteries and fuel cells. , 2004, Chemical reviews.

[30]  A. Lewandowski.  Electrochemical capacitors with polymer electrolytes based on ionic liquids , 2003 .

[31]  Shengbo Zhang,et al.  Variations on the salt-polymer electrolyte theme for flexible solid electrolytes , 1996 .

[32]  Kang Xu,et al.  Nonaqueous liquid electrolytes for lithium-based rechargeable batteries. , 2004, Chemical reviews.

[33]  P. Suarez,et al.  The use of new ionic liquids in two-phase catalytic hydrogenation reaction by rhodium complexes , 1996 .

[34]  Luciano T. Costa,et al.  Molecular dynamics simulation of polymer electrolytes based on poly(ethylene oxide) and ionic liquids. I. Structural properties. , 2006, The Journal of chemical physics.

[35]  J. Fuller,et al.  Ionic liquid–polymer gel electrolytes from hydrophilic and hydrophobic ionic liquids , 1998 .

[36]  Robin D. Rogers,et al.  Traditional Extractants in Nontraditional Solvents: Groups 1 and 2 Extraction by Crown Ethers in Room-Temperature Ionic Liquids† , 2000 .