In this work it was described the preparation of hybrid materials constituted by a organic copolymer, which contains ethylene oxide blocks, and silica. The inorganic network was formed by the hydrolysis and condensation of tetraethoxysilane, TEOS, into the polymeric solution. As a copolymer, it was used poly(ethylene oxide-b-amide-6), PEBAX. Hybrids containing lithium perchlorate, known as hybrid electrolytes, were also prepared. The materials were characterized by transmission electron microscopy, stress-strain tests, dynamic-mechanical analysis and X-ray diffractometry. The PEBAX/TEOS/LiClO4 systems were also characterized by electrochemical impedance spectroscopy and cyclic voltammetry to evaluate their properties as a solid state electrolyte.
Sol-gel process; hybrids; composites; polymeric electrolytes
