Junhua Zhang, Luxin Zhang, Boya Zhao, Yuze Guan, Yonghua Li, W P Chen, Xing’ao Li, Xinbao Zhu, Yan Cui, Wei Huang
with a 200 h stability. In situ/operando spectroscopy and DFT calculations unveil that Pt/Co DSAs synergistically induce charge redistribution on the MXene surface, thus optimizing the active-site electronic states and intermediate adsorption to lower the reaction energy barrier. Our strategy serves as a pathway for atomically precise control of MXene-supported single-atom sites toward selective electrocatalysis.