A team of scientists led by researchers from the Max Planck Institute has developed aluminum alloys with higher strength and superior resistance to hydrogen embrittlement, crucial for the hydrogen economy. By incorporating scandium into aluminum alloys, they achieved a 40% strength increase and five times higher resistance to hydrogen embrittlement while maintaining ductility. The use of nanoparticles with a shell comprising aluminum, magnesium, and scandium was key in trapping hydrogen and reducing embrittlement risk, simultaneously boosting strength. Through a two-step heat treatment, fine Al3Sc nanoprecipitates with an Al3(Mg,Sc)2 shell were engineered, serving dual roles in the alloy. This groundbreaking method eliminates the traditional trade-off between strength and hydrogen resistance. The research, published in Nature, emphasizes the potential to scale up production using current industrial standards, making these aluminum materials suitable for a hydrogen-powered future. Atom probe tomography at the Max Planck Institute verified the hydrogen-trapping mechanism at the atomic level. The study's findings offer a promising route to enhance hydrogen resistance in high-strength aluminum alloys, showcasing a significant step towards industrial application.