Cathodic corrosion as a facile and universal method for scalable preparation of dual-atom electrocatalysts  

作　　者：Rui Li Tao Shao Fudong Jiang Dong Chen Wenyong Jing Jingwen Ba Yulong Li Yuhan Wu Wenhua Luo Jingsong Xu 

机构地区：[1]Institute of Materials,China Academy of Engineering Physics,Mianyang 621907,China [2]Science and Technology on Surface Physics and Chemistry Laboratory,Mianyang 621908,China

出　　处：《Nano Research》2025年第4期70-77,共8页纳米研究(英文版)

基　　金：financially supported by National MCF Energy Research and Development Program(No.2022YFE03170004);the National Natural Science Foundation of China(Nos.22019146,and 22309169);Emei Tianfu Leading Talent Program in Sichuan Province(No.RCQC202201);Sichuan Province Natural Science Foundation Innovation Research Team Program(No.2024NSFTD0018);Foundation from Institute of Materials CAEP(No.JBNY060201).

摘　　要：Dual-atom catalysts(DACs)are emerging as highly efficient electrocatalysts,offering synergistic effects and high atomic utilization.Here,we introduce a scalable and facile electrochemical approach for the top-down synthesis of DACs supported on carbon materials via a two-time“plasma treatment+cathodic corrosion”procedure.Concretely,metal atoms in nanoparticles on cathode are etched under high negative potential,diffused over the electrode,captured by N doped carbon carriers in electrolyte and forming single-atom sites.After introducing additional N coordination sites adjacent to the primary metal single-atom sites via a secondary plasma processing and anchoring a second metal atom via a subsequent cathodic corrosion process,DACs are achieved.The as-prepared Pt DACs exhibit enhanced catalytic activity toward hydrogen evolution reaction(HER)with a low overpotential of 0.027 V at 10 mA·cm^(-2) and a Tafel slope of 29.9 mV·dec^(-1) as well as high stability.Importantly,the proposed electrochemical top-down synthetic route affords promising potential for scalable production of other homonuclear or heteronuclear DACs on multiple carbon substrates,advancing the practical application of DACs in electrocatalysis.

关 键 词：dual-atom catalysts cathodic corrosion top-down strategy scalable synthesis hydrogen evolution reaction 

分 类 号：O643.36[理学—物理化学]