Mixed solid device based on conducting polymer composite and polymer electrolyte

tetraethyl orthosilicate (teos) derived sol-gel porous films have been utilized as template for the electrochemical polymerization of aniline. polyaniline-silica composites were obtained and the redox behavior and charge/discharge capacities of a lithium polymeric battery using poly (dimethylsiloxane- co-ethylene oxide) as gel polymeric electrolyte, were investigated. the composite presented a high initial capacity (140 ma h g-1) and a reversible capacity of 75 ma h g-1 after 100 charge/discharge cycles. the decrease in the specific capacity was attributed to an increase in charge transfer resistance and a decrease in the diffusion coefficient measured by electrochemical impedance spectroscopy.