SYNTHESIS AND ELECTROCHEMICAL CHARACTERIZATION OF NEW BULKY LITHIUM-SALTS

We describe the synthesis of new lithium salts, based on bulky carbani ons, substituted by strong electron withdrawing groups together with t heir electrochemical studies using high molecular weight host polymer poly(oxyethylene) POE. The ionic conductivities of lithium salts-POE c omplexes have been measured as a function of temperature by impedance spectroscopy. The new lithium salts exhibit a wide electrochemical win dow stability. Their dissolution in POE (M(W) = 5 x 10(6)) provides am orphous polymer electrolytes with high ionic conductivity.