The Effect Of Clay Coating On Electrodes In Seawater Electrolysis Process To Produce Environmentally Friendly Hydrogen Energy

Abstract

Hydrogen gas from seawater can be obtained through electrolysis process. However, until now, seawater electrolysis process has not been able to last long, because it contains chlorine that causes anodes to corrode. This study aims to analyze the effect of clay coating on electrodes to resist corrosion. The water displacement method is used to determine the volume produced during the electrolysis process, starting from 0 and progressed within 20 minutes of interval for each measurement until the hydrogen production reaches the saturation point. In addition to the volume, hydrogen rate and yield production tend to decrease after the electrolysis process lasts for a certain time. The results also show that the use of electrodes (copper) coated with clay has a longer resistance to corrosion due to chlorine contained in seawater, compared to electrodes (copper) not coated with clay. Electrodes (copper) that are not coated with clay have a shelf life of up to 9 hours and reach a maximum point of producing hydrogen at 280 minutes of 15 ml; While the electrode coated with clay turned out to have a durability of up to 12 hours and reached the maximum point in producing hydrogen at 560 minutes of 15.4 ml.