The Korea Institute of Materials Science (KIMS) has introduced a groundbreaking catalyst that transforms industrial waste alkaline water into green hydrogen, revolutionizing the hydrogen production process. This innovative nickel-cerium oxide catalyst significantly cuts down water purification costs, making hydrogen production more economically viable. The system, utilizing an anion exchange membrane water electrolyzer (AEMWE), has demonstrated exceptional durability during real-world testing, surpassing 2,000 hours of operation with minimal degradation. By eliminating the necessity for purified water in the electrolysis process, this technology not only reduces production expenses but also enhances sustainability, aligning with South Korea's ambitious clean energy targets and efforts toward industrial decarbonization. Moreover, the potential expansion of this catalytic system to seawater electrolysis represents a significant advancement, offering a promising avenue for extensive and eco-friendly green hydrogen generation. The research, recently showcased in Advanced Science and supported by national R&D funding, underscores South Korea's commitment to spearheading sustainable energy initiatives and reaffirms its leadership in the global push for clean, innovative technologies.