Kinetics and polarization phenomena of a sulfate electrolyte cell
Abstract A low-current galvanostatic technique has been used to study the polarization phenomena at the gaseous electrode of a two-phase sulfate electrolyte cell. Experimental results show that the variation of polarization current with overpotential is linear. The slope of the polarization lines varies with sulfur trioxide and oxygen partial pressures. The exchange current density is proportional to the SO 3 partial pressure and to the square root of the oxygen partial pressure. The exchange current density for the platinum-mesh electrode is four times greater than that obtained with the gold-mesh electrode.