Physical properties of solid polymer electrolyte PEO(LiTFSI) complexes

The physical properties of the ionic conductor, obtained by dissolution of lithium trifluoromethanesulphonylimide in polyethylene oxide, (PEO)nLi+((CF3SO2)2N)- have been investigated for several values of n. The phase diagram has been established from both DSC and NMR techniques. The diffusion coefficients of 7Li and 19F containing Species, determined by the pulsed magnetic field gradient (PMFG) technique, are interpreted as the measures of the cationic and anionic transport numbers, which are concentration dependent, and t+ reaches a value close to 0.3. This study is complemented by a systematic analysis of the behaviour of the 7Li relaxation time T1 versus temperature and concentration which is correlated to the glass temperature Tg.

[1]  M. Ue.  Mobility and Ionic Association of Lithium and Quaternary Ammonium Salts in Propylene Carbonate and γ‐Butyrolactone , 1994 .

[2]  Michel Perrier,et al.  Phase Diagrams and Conductivity Behavior of Poly(ethylene oxide)-Molten Salt Rubbery Electrolytes , 1994 .

[3]  Marc Doyle,et al.  The importance of the lithium ion transference number in lithium/polymer cells , 1994 .

[4]  M. Salomon.  Conductance of solutions of lithium bis(trifluoromethanesulfone)imide in water, propylene carbonate, acetonitrile and methyl formate at 25°C , 1993 .

[5]  C. Vincent,et al.  The effect of molecular weight on cation mobility in polymer electrolytes , 1993 .

[6]  H. Ohno,et al.  Recent advancement of ion‐conductive polymers , 1993 .

[7]  S. Arumugam,et al.  Cation and anion diffusion coefficients in a solid polymer electrolyte measured by pulsed-field-gradient nuclear magnetic resonance , 1993 .

[8]  F. M. Gray,et al.  Solid Polymer Electrolytes , 1991 .

[9]  J. R. Stevens,et al.  A 7Li nuclear magnetic resonance study of LiCF3SO3 complexed in poly(propylene‐glycol) , 1991 .

[10]  S. Besner,et al.  Solvation effect upon glass transition temperature and conductivity of poly(ethylene oxide) complexed with alkali thiocyanates , 1989 .

[11]  J. Prud'homme,et al.  Thermal properties of poly(ethylene oxide) complexed with sodium thiocyanate and potassium thiocyanate , 1987 .

[12]  Yozo Chatani,et al.  Crystal structure of poly(ethylene oxide) ― sodium iodide complex , 1987 .

[13]  C. Robitaille,et al.  Phase Diagrams and Conductivity Characterization of Some PEO ‐ LiX Electrolytes , 1986 .

[14]  C. Berthier,et al.  Thermal analysis and NMR study of a poly(ethylene oxide) complex electrolyte: PEO(LiCF3SO3)x , 1984 .

[15]  M. Armand,et al.  Microscopic investigation of ionic conductivity in alkali metal salts-poly(ethylene oxide) adducts , 1983 .

[16]  P. Gennes,et al.  Reptation of a Polymer Chain in the Presence of Fixed Obstacles , 1971 .

[17]  E. R. Andrew,et al.  Spin-Lattice Relaxation in Imperfect Cubic Crystals and in Non-cubic Crystals , 1961 .

[18]  G. Fulcher,et al.  ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES , 1925 .

[19]  P. Bruce,et al.  Structure of the poly(ethylene oxide)–sodium perchlorate complex PEO3–NaClO4 from powder X-ray diffraction data , 1992 .

[20]  S. Besner,et al.  Comparative study of poly(ethylene oxide) electrolytes made with LiN(CF3SO2)2, LiCF3SO3 and LiClO4: Thermal properties and conductivity behaviour , 1992 .

[21]  M. Armand,et al.  Nuclear magnetic resonance spectroscopy in solid polymer electrolytes , 1992 .

[22]  D. Murphy,et al.  Phase relationships and conductivity of the polymer electrolytes poly(ethylene oxide)/lithium tetrafluoroborate and poly(ethylene oxide)/lithium trifluoromethanesulfonate , 1988 .

[23]  P. Ferloni,et al.  Ion transport and thermal properties of poly(ethylene oxide) - LiClO4 polymer electrolytes , 1986 .

[24]  Colin A. Vincent,et al.  An investigation of the conducting species in polymer electrolytes , 1986 .

[25]  Michel Armand,et al.  NMR, DSC, and conductivity study of a poly(ethylene oxide) complex electrolyte : PEO(LiClO4)x , 1986 .

[26]  J. E. Tanner,et al.  Spin diffusion measurements : spin echoes in the presence of a time-dependent field gradient , 1965 .