Electrochemical behaviour of platinum-coated Ta/Ta2O5 electrodes

Eric Mahé (1) , Didier Devilliers (1) , Henri Groult (1) , Jerome Pouilleau (1)

1 LI2C - Liquides Ioniques et Interfaces Chargées

Ta/Ta2O5/Pt electrodes were prepared by electrodeposition of platinum on Ta/Ta2O5 substrates. These electrodes were put in the presence of a redox couple in solution (Fe3+/Fe2+); it was shown that the rate of electron transfer strongly depends on the concentration of the electroactive species, the thickness dox of the oxide layer and the mode of platinum deposition.

Mots clés: Tantalum oxide; Electron transfer; Platinum; Modified electrodes

Domaines: Chimie-Physique [physics.chem-ph]

Eric Mahé, Didier Devilliers, Henri Groult, Jerome Pouilleau. Electrochemical behaviour of platinum-coated Ta/Ta2O5 electrodes. Electrochimica Acta, 1999, 44 (13), pp.2307. ⟨10.1016/S0013-4686(98)00352-1⟩. ⟨hal-00163567⟩