Solid polymer electrolytes based on cross-linked polysiloxane- g-oligo(ethylene oxide): ionic conductivity and electrochemical properties

Abstract Poly(siloxanes- g -oligo(ethylene oxide)) with acrylate groups at the terminal position were prepared and examined for the solid polymer electrolyte (SPE) by curing them. Poly(ethylene glycol) dimethyl ether (PEGDME) was added as a plasticizer. Conductivity of the resulting polymer electrolytes was greatly enhanced with increasing amounts of low molecular weight PEGDME. Maximum conductivity was found to be 8×10 −4  S/cm at 30 °C with an [EO]/[Li] ratio of about 8. These electrolytes showed oxidation stability up to 4.95 V against the lithium reference electrode. Reversible electrochemical plating/stripping of lithium was observed on the nickel electrode. The plating/stripping efficiency of lithium on nickel was measured to be about 53%.

[1]  I. Khan,et al.  Conductivity of solid complexes of lithium perchlorate with poly{[ω‐methoxyhexa(oxyethylene)ethoxy]methylsiloxane} , 1986 .

[2]  Young-Il Jang,et al.  Rubbery Block Copolymer Electrolytes for Solid‐State Rechargeable Lithium Batteries , 1999 .

[3]  C. Vincent,et al.  Selection of new Kynar-based electrolytes for lithium-ion batteries , 1998 .

[4]  T. Hanrath,et al.  Characterization of the passivation layer at the polymer electrolyte/lithium electrode interface , 2000 .

[5]  W. Liang,et al.  Solid polymer electrolytes. IV. Preparation and characterization of novel crosslinked epoxy‐siloxane polymer complexes as polymer electrolytes , 2002 .

[6]  Zhengcheng Zhang,et al.  Novel network polymer electrolytes based on polysiloxane with internal plasticizer , 2000 .

[7]  L. J. Lyons,et al.  Highly Conductive Siloxane Polymers , 2001 .

[8]  I. Khan,et al.  Polymer electrolyte complexes of LiCIO4 and comb polymers of siloxane with oligo‐oxyethylene side chains , 1988 .

[9]  C. Angell,et al.  Fast ion motion in glassy and amorphous materials , 1983 .

[10]  C. Vincent,et al.  Polymer electrolyte reviews. 1 , 1987 .

[11]  Felix B. Dias,et al.  Trends in polymer electrolytes for secondary lithium batteries , 2000 .

[12]  A. Zanelli,et al.  Composite polymer electrolytes with improved lithium metal electrode interfacial properties: I. Electrochemical properties of dry PEO-LiX systems , 1998 .

[13]  M. Watanabe,et al.  Network Polymer Electrolytes with Free Chain Ends as Internal Plasticizer , 1998 .

[14]  A. Lisowska-Oleksiak.  The interface between lithium and poly(ethylene-oxide) , 1999 .

[15]  K. Abraham,et al.  Highly Conductive PEO-like Polymer Electrolytes , 1997 .

[16]  H. Allcock,et al.  Effect of oligo(ethyleneoxy)cyclotriphosphazenes, tetraglyme, and other small molecules on the ionic conductivity of the poly[bis(methoxyethoxyethoxy)phosphazene] (MEEP)/lithium triflate system , 1997 .

[17]  M. H. Lee,et al.  Ultraviolet radiation curing of acrylates for lithium polymer electrolytes , 1997 .

[18]  H. Allcock,et al.  Synthesis of polyphosphazenes with ethyleneoxy-containing side groups : New solid electrolyte materials , 1996 .

[19]  Yongku Kang,et al.  Photocured PEO-based solid polymer electrolyte and its application to lithium-polymer batteries , 2001 .