ABSTRACT
A physical model is proposed for the interpretation of peculiar ac-
impedance spectroscopy diagrams obtained with transition metal
oxides based electrodes in the presence of lithium salts (LiClO4,
LiBF4, LiAsF6, or LiPF6) dissolved in organic solvents (PC, EC, DMC,
etc.). This model is based on the principle of an adsorption of the
electroactive species onto the surface of the electrodes. It can explain
most of the numerous distorted plots reported in the literature and
its reliability is also discussed by performing other complementary
experiments.
