SmCo ₅ with a Reconstructed Oxyhydroxide Surface for Spin‐Selective Water Oxidation at Elevated Temperature

The efficiency of electrolytic hydrogen production is limited by the slow reaction kinetics oxygen evolution (OER). Surface-reconstructed ferromagnetic (FM) catalysts with a spin-pinning effect at FM/oxyhydroxide interface could enhance spin-dependent OER kinetics. However, in real-life applications, electrolyzers are operated elevated temperature, which may disrupt spin orientations FM and limit their performance. In this study, we prepared surface-reconstructed SmCo5/CoOxHy, possesses polarized spins that lead to excellent activity. These interfacial be further aligned through magnetization process, enhanced Moreover, operation temperature was mimic practical conditions water electrolyzers. It found activity enhancement magnetized SmCo5/CoOxHy catalyst preserved up 60 °C.