A research team from Fudan University in Shanghai has made a significant breakthrough in green hydrogen production by developing a novel embedded catalyst that enhances the stability and performance of Proton Exchange Membrane Water Electrolyzer technology. Their findings, published in the journal Science, detail how this innovative catalyst, inspired by a traditional Chinese snack, could revolutionize green hydrogen production. The catalyst, which uses less expensive metals like iridium and platinum, reduces costs while maintaining efficiency, addressing a major barrier to widespread adoption of green hydrogen due to high production costs. This breakthrough catalyst, likened to a maqiu (sesame ball), maximizes surface area and minimizes precious metal usage, reducing iridium consumption significantly. Moreover, the technology reduces energy consumption during water electrolysis, potentially saving a considerable amount of electricity on a large scale. With calculations showing potential electricity savings of 1.12 trillion kilowatt-hours annually by 2050, the technology holds promise for cost-effective green hydrogen production at scale, essential for decarbonization efforts in various industries.