Development and Demonstration of In-House Design Green Hydrogen Production Technologies with Reduced CAPEX and OPEX

Abstract Design of highly efficient cost effective and self-supported bi-functional electrocatalyst for the production of green Hydrogen is significant for renewable and sustainable energy conversion to achieve future carbon neutral. Meanwhile, as we know that the overall water splitting is an uphill reaction requires 285.8 kJ of energy, corresponds to the HHV of hydrogen, state-of-the-art developments are necessary to greatly improve the efficiency by rationally designing non-precious metal-based robust bi-functional catalysts for promoting both the cathodic hydrogen evolution and anodic oxygen evolution reactions. The performance of metal phosphide towards hydrogen and oxygen evolution was examined under application relevant conditions in an alkaline and anion exchange membrane (AEM) electrolyzer cell stack. The in-house designed stacked electrolyzer exhibited stable performances with a hydrogen production rate of few Nm3 per hour without any decay, pave the path towards large scale application with substantial reduction in CAPEX and OPEX cost. Key Words: Water splitting, Green Hydrogen, Electrolyzer, Electrolysis, HER, OER