Electrochemical responses of active metal insertion electrodes and electronically conducting polymers: common features and new insights

• Published in: Electrochimica acta Vol. 49; no. 22; pp. 3701 - 3710
• Main Authors: Levi, M.D, Cohen, Y.S, Gofer, Y, Aurbach, D
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 15-09-2004; Elsevier
• Subjects: Chemistry; Electrochemistry; Electrodes: preparations and properties; Electronically conducting polymers; Exact sciences and technology; Frumkin-type isotherm; General and physical chemistry; Intercalation electrodes; Other electrodes; Polypyrrole; Short-range interactions; Intercalation electrodes; Frumkin-type isotherm; Polypyrrole; Short-range interactions; Electronically conducting polymers; Alkali metal Compounds; Electrode production; Experimental study; Electrochemical characteristic; Intercalation compound; Conducting polymers; Frumkin isotherm; Thin layer electrode; Lithium compound; Pyrrole polymer; Modified material
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2004.01.075

Redox behavior of electronically conducting polymers (ECPs) and inorganic active metal oxides intercalation electrodes (IEs) were analyzed by using Frumkin-type intercalation isotherms. Using such isotherms appears to be very useful in fast screening and classification of various electroactive materials. It provides a clear tool for linking the equilibrium properties of these materials to their dynamic (transport) characteristics. In this article, we review and discuss the common features of these materials with distinctions between micro- and macrostructures, including host expansion, distortion and structural transitions; ions and solvent permeation (partioning) into the hosts; conformational flexibility and morphological changes; ordering and energetic dispersion of sites; electronic and ionic conductivity, etc.; and the ways in which these structural aspects may affect their redox behavior.