On October 3, 2025, a groundbreaking research paper titled "Enhancing and Stabilizing the Oxygen Evolution Reaction through Ru Single Atoms Anchored on Amorphous NiMoOx" was published online in Nature Communications by Professor Ma Jiwei's team from the School of Materials Science and Engineering at Tongji University, along with their collaborators. In this study, the researchers developed an innovative electrocatalytic material featuring amorphous NiMoOx as a support to anchor ruthenium (Ru) single atoms. This design offers a new paradigm for creating high-performance oxygen evolution reaction (OER) electrocatalysts by strategically positioning metal single atoms on amorphous oxides. Water electrolysis for hydrogen production is widely recognized as an effective approach to generate green hydrogen. However, the OER—a sluggish four-electron transfer reaction—poses a bottleneck, necessitating efficient electrocatalysts to accelerate the process. Amorphous structures are advantageous due to their larger electrochemical surface area and abundant defects. In particular, NiMo-based amorphous oxides have garnered significant interest owing to their straightforward synthesis and rapid surface reconstruction capabilities. To achieve their breakthrough, Ma Jiwei's team utilized a one-step supersaturated coprecipitation method at room temperature, successfully creating amorphous NiMoOx with anchored Ru single atoms. This catalyst exhibited exceptional performance in alkaline electrolyzers. Through in-situ characterization and theoretical calculations, the team revealed that the synergy between single atoms and amorphous structures plays a crucial role in enhancing electrocatalytic reactions. This work provides a forward-looking strategy for achieving a balance between high catalytic performance and cost-effectiveness in precious metal catalysts, paving the way for more sustainable and efficient hydrogen production technologies.
