The Influence of Alkaline Earth Metal Cations on the Performance of Platinum Electrodes during Brine Electrolysis.

The performance of platinum electrodes towards the hydrogen evolution reaction (HER) during pH neutral brine electrolysis was investigated in the presence of alkaline earth metal divalent cations, with focus on Mg2+ ions. This study aimed to understand the impact of these cations and/or their hydroxide deposits on electrode performance. Electrochemical measurements were conducted in electrolytes with varying Mg2+ concentrations (0 mM to 55 mM) in 1 M Na2SO4 solution.