The objective of this study, funded by the Ministry of Education, is to develop cost-effective and high-performance electrode materials to be used in electrolysis to produce hydrogen from water and to demonstrate their efficacy in a larger-scale water electrolyzer. Carbon-supported low-cost transition-metal-based electrode materials are the target. More specifically, the surfaces of the target materials are engineered by introducing porosity. The suitability of the electrode materials with the highest potential for larger-scale electrolysis are evaluated in a water electrolyzer. The research in this field has the potential to enhance the IP portfolio and contribute to both the national and international scientific communities.