in neutral sea water electrolysis process. Furthermore, the influence of electrodes distance (Figure ) and electrolyte flow rates (Figure ) on the water splitting performance is analyzed visually, and directly related to the electrochemical performance of the electrolyser. The universality of the technique developed can further be explored for in-depth understanding of any electrochemical reactions including the highly anticipated intermediate chemical oxygen species influencing the well-known oxygen evolution/reduction reaction as an example .