Thermodynamic and potentiometric investigation of the surface processes on Hg₃In₂Te₆ electrodes

Chem. Met. Alloys 9 (2016) 123-127

https://doi.org/10.30970/cma9.0341

Oxana SEMA, Volodymyr DIICHUK, Igor KOBASA

The influence of chemical etching and preliminary cathodic and anodic polarization on the stationary electrode potential of a Hg₃In₂Te₆ electrode has been investigated in various acidic solutions with different pH-values. It is shown that In³⁺ ions govern the process of formation of a double electric layer at the interphase semiconductor/electrolyte for electrodes submitted to preliminary chemical etching and anodization, while Hg²⁺ ions play the leading role in a similar process occurring on the electrodes after cathodic polarization.

Pourbaix diagram for the system Hg₃In₂Te₆–H₂O (С = 10^-6 mole/l).

Keywords

Hg₃In₂Te₆ / Pourbaix diagram / Thermodynamic analysis / Cathodic and anodic polarization