Precise Design and Modification Engineering of Single-Atom Catalytic Materials for Oxygen Reduction

Due to their unique electronic and structural properties, single-atom catalytic materials (SACMs) hold great promise for the oxygen reduction reaction (ORR). Coordinating environmental and engineering strategies is the key to improving the ORR performance of SACMs. This review summarizes the latest research progress and breakthroughs of SACMs in the field of ORR catalysis. First, the research progress on the catalytic mechanism of SACMs acting on ORR is reviewed, including the latest research results on the origin of SACMs activity and the analysis of pre-adsorption mechanism. The study of the pre-adsorption mechanism is an important breakthrough direction to explore the origin of the high activity of SACMs and the practical and theoretical understanding of the catalytic process. Precise coordination environment modification, including in-plane, axial, and adjacent site modifications, can enhance the intrinsic catalytic activity of SACMs and promote the ORR process. Additionally, several engineering strategies are discussed, including multiple SACMs, high loading, and atomic site confinement. Multiple SACMs synergistically enhance catalytic activity and selectivity, while high loading can provide more active sites for catalytic reactions. Overall, this review provides important insights into the design of advanced catalysts for ORR. This review explores the potential of single-atom catalytic materials (SACMs) in oxygen reduction reaction (ORR). The catalytic mechanism and activity source of SACMs for ORR are reviewed. Emphasis on precise coordination modifications (in-plane, axial, and adjacent sites) enhances the intrinsic catalytic activity of ORR. Engineering strategies such as multiple SACMs, atomic site confinement, and high loading are discussed. The review provides valuable insights for advanced catalyst design in sustainable energy conversion.image

Automated summary

This review explores the potential of single-atom catalytic materials (SACMs) in oxygen reduction reaction (ORR). The catalytic mechanism and activity source of SACMs for ORR are reviewed. Emphasis on precise coordination modifications (in-plane, axial, and adjacent sites) enhances the intrinsic catalytic activity of ORR. Engineering strategies such as multiple SACMs, atomic site confinement, and high loading are discussed. The review provides valuable insights for advanced catalyst design in sustainable energy conversion.