techniques and electrochemical impedance spectroscopy in aqueous solution. The latter technique was used in order to study the electronic and ionic transport, both inside and on the surface of the material. The behaviour of the modified electrode was studied at different OH− concentrations (pH 11–12.8) and at different temperatures, with the aim to calculate the activation energies of the electronic conduction and charge-transfer processes. The electronic conductivity of the bulk material is dependent on the CoIII/CoII ratio and results the limiting parameter of the overall redox process. The same result was previously obtained for the Ni based hydrotalcite, but the latter material showed a better electrical conductivity.
Electrochemical characterisatio n of electrodes modified with a Co/Al hydrotalcite-like compound / E. SCAVETTA; BERRETTONI M.; F. NOBILI; D. TONELLI. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - STAMPA. - 50:(2005), pp. 3305-3311. [10.1016/j.electacta.2004.12.004]
Electrochemical characterisatio n of electrodes modified with a Co/Al hydrotalcite-like compound
SCAVETTA, ERIKA;BERRETTONI, MARIO;TONELLI, DOMENICA
2005
Abstract
techniques and electrochemical impedance spectroscopy in aqueous solution. The latter technique was used in order to study the electronic and ionic transport, both inside and on the surface of the material. The behaviour of the modified electrode was studied at different OH− concentrations (pH 11–12.8) and at different temperatures, with the aim to calculate the activation energies of the electronic conduction and charge-transfer processes. The electronic conductivity of the bulk material is dependent on the CoIII/CoII ratio and results the limiting parameter of the overall redox process. The same result was previously obtained for the Ni based hydrotalcite, but the latter material showed a better electrical conductivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
