A research team, led by Prof. Yan Ya from the Shanghai Institute of Ceramics of the Chinese Academy of Sciences, in collaboration with other institutions, has made significant strides in green hydrogen production with the development of a highly stable and efficient water oxidation catalyst. Published in Science, their study details a novel strategy to address the challenges of water oxidation, crucial for electrolytic water splitting. By constructing a CoFe-LDH@POM superstructure, the researchers achieved a single-layer CoFe hydroxide catalyst with exceptional performance in alkaline electrolytes, outperforming traditional catalysts. The catalyst displayed remarkable stability and efficiency, operating for over 5,000 hours at room temperature and maintaining continuous operation for more than 2,000 hours at an elevated temperature of 60°C. The breakthrough not only sets a new benchmark in catalyst performance but also provides a framework for next-generation electrocatalysts, advancing the field of alkaline water electrolysis towards industrial-scale, high-current, low-energy operations.