Effect of Operating Parameters on Performance of Alkaline Water Electrolysis

In this fundamental research investigation, the simple fundamental experimental design with two platinum wire as anode/cathode electrode and KOH solution as electrolyte were used throughout the experiments. The effect of electrolyte volume and concentration, electrode location and submerged length into the electrolyte, distance between two electrode and operating temperature on efficiency of water electrolysis was investigated. The results showed that the performance of alkaline water electrolysis is significantly affected by distance between electrode, electrolyte concentration and operating temperature. Higher rate of hydrogen production can be possible at smaller gap between electrodes with higher concentration of electrolyte operating at higher temperature.