Sol-gel preparation of a di-ureasil electrolyte doped with lithium perchlorate

• Autor(es): Silva, Maria Manuela ; Nunes, Sílvia ; Barbosa, P. C. ; Evans, A. ; Zea Bermudez, V. de ; Smith, Michael John ; Ostrovskii, David
• Data: 2006
• Identificador Persistente: http://hdl.handle.net/1822/5130
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Sol-gel; Lithium perchlorate; Conductivity; Thermal analysis
• Tipo de Documento: Preprint
• Idioma: Inglês

Descrição

Prova tipográfica (In Press) Solid polymer electrolytes (SPEs) synthesized by the sol-gel process and designated as ormolytes (organically modified electrolytes), have been prepared through the incorporation of lithium perchlorate, LiClO4 into the U(2000) organic-inorganic hybrid network. Electrolytes with lithium salt compositions of n (where n indicates the number of oxyethylene units per Li+ ion) between ∞ and 0.5 were characterized by conductivity measurements, cyclic voltammetry at a gold microelectrode, thermal analysis and spectroscopic techniques. The conductivity results obtained suggest that this system offers a quite significant improvement over previously characterized analogues doped with lithium triflate.