Characterization of lithium-based solid polymer electrolytes

• Author(s): Barbosa, P. C. ; Rodrigues, L. C. ; Silva, Maria Manuela ; Smith, Michael John
• Date: 2009
• Persistent ID: http://hdl.handle.net/1822/11607
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Solid polymer electrolyte; Lithium salt; PEO/siloxane hybrids
• Document Type: Article
• Language: English

Description

Sol-gel derived poly(oxyethylene)/siloxane hybrids doped with lithium hexafluoroantimonate, LiSbF6, have been prepared. Compositions of these novel xerogel electrolytes were identified using the conventional d-U(2000)nLiSbF6 notation, (where n is the molar ratio of oxyethylene moieties per Li+ ion) and samples with n between ∞ and 2.5 were characterized by conductivity measurements, cyclic voltammetry at a gold microelectrode and thermal analysis. The electrolyte films produced were obtained as transparent and amorphous monoliths with encouraging electrochemical and thermal properties.