Abstract
A technique for the production of perfect thin-layered Ir coatings on inert Ti supports is developed. The highly textured coatings have some potential uses. Local topography and energy nonuniformness of the surface of such Ir electrodes are studied by electrochemical scanning tunneling microscopy (ESTM) and scanning tunneling spectroscopy (STS). In situ STM images of Ir–Ti textured electrodes with axial texture (111) are obtained with an atomic resolution at potentials of 0.3 to 1.2 V, in 0.05 M H2SO4 as well. Energy states of surfaces of Ir–Ti textured electrodes are studied with an atomic resolution using in situ STS by distance and voltage. Dependences of the tunneling current on the tunneling voltage and the tunneling-gap width are measured at Ir-surface potentials of 0.3 to 1.2 V. Effective potential barrier for the electron tunneling is estimated at different potentials of Ir.
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Neburchilova, E.B., Kasatkin, E.V. Iridium–Titanium Textured Electrodes: Production and Investigation by Electrochemical Scanning Tunneling Microscopy and Spectroscopy. Russian Journal of Electrochemistry 36, 1283–1290 (2000). https://doi.org/10.1023/A:1026699513580
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DOI: https://doi.org/10.1023/A:1026699513580