Ac impedance spectroscopy was applied to the study of the interfacial prope
rties of lithium metal exposed to pure tetraethylene glycol dimethyl ether.
In the reaction between the solvent and lithium a passivating film is form
ed on the metal. A protective character of the films was also illustrated f
or electrodeposited lithium layers using the electrochemical quartz microba
lance (EQMB) method. (C) 1999 Elsevier Science B.V. All rights reserved.