In Spain, a team of researchers has made a groundbreaking advancement in green hydrogen production by developing an iridium-free electrolyzer with a highly stable and efficient catalyst. Traditional methods of hydrogen production are carbon-emitting and reliant on fossil fuels, prompting global efforts to find cleaner alternatives. The team's innovation focuses on utilizing cobalt as a catalyst, as it is more abundant than iridium. By employing a novel approach involving delamination and incorporating water into the catalyst structure, the researchers were able to enhance its stability and performance. The cobalt-tungsten oxide catalyst, named CoWO4 or CWO, displayed superior stability and efficiency during electrolysis, outperforming previous cobalt-based catalysts. With the catalyst's ability to operate for over 600 hours, the team has achieved a significant milestone in green hydrogen production. While the catalyst's stability is not yet at commercial levels, the researchers are optimistic about further advancements. Their dedication to exploring new materials and design strategies signals a promising future for sustainable and industrial-scale hydrogen generation.