MXenes, a class of materials, have emerged as promising catalysts for the oxygen evolution reaction in electrolytic water splitting, crucial for green hydrogen production. Led by chemist Michelle Browne, an international team has demonstrated that properly functionalized MXenes outperform traditional metal oxide catalysts in terms of stability and efficiency. These MXenes, composed of metals like titanium or vanadium combined with carbon and/or nitrogen, possess a large internal surface area ideal for catalytic applications. Chemical modification of MXenes with copper and cobalt hydroxides has shown remarkable results, with the catalysts displaying enhanced efficiency and durability in continuous operation. Advanced analytical techniques at BESSY II provided insights into the surface properties of MXenes, shedding light on their potential as catalysts in electrolyzers. The collaboration between HZB and partner teams from Trinity College, Dublin, and the University of Chemistry and Technology, Prague, aims to further explore the use of MXene catalysts for green hydrogen production. Future research will involve additional chemical modifications and testing in conventional electrolyzers to optimize performance and cost-effectiveness. The study, published in the Journal of Materials Chemistry A, underscores the significant role MXenes can play in advancing the development of sustainable energy solutions.