Charge-asymmetry RuCo single atom alloy catalyst for efficient hydrogen evolution reaction  

作　　者：Yi Yao Huilong Geng Wanchun Duan Lili Zhang Faqiang Xu Huishan Shang 

机构地区：[1]National Synchrotron Radiation Laboratory(NSRL)University of Science and Technology of China(USTC),Hefei 230029,China [2]Energy&Catalysis Center,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China [3]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China

出　　处：《Nano Research》2025年第4期144-152,共9页纳米研究(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22201262).

摘　　要：By incorporating a limited number of precious metal atoms into the base metal,the single-atom alloy catalyst not only optimizes the electronic structure and stability of the catalyst but also emerges as an innovative material that enhances the efficiency and selectivity of catalytic reactions.RuCo single-atom alloy electrocatalyst supported on S,N co-doped carbon nanosheets(RuCo SAA/SNC)uniformly distributed on nitrogen,sulfur co-doped carbon nanosheets was prepared by two-step pyrolysis and carbonization.The incorporation of Ru not only optimizes the atomic utilization of Ru but also enhances the charge conduction properties of the surface Co species,thereby increasing the evolution and migration rates of hydrogen ions.In a 0.5 M H_(2)SO_(4) solution,the RuCo SAA/SNC catalyst demonstrates a tafel slope of 27.5 mV·dec^(-1) and an overpotential of merely 43 mV at 10 mA·cm^(-2).This work achieves enhanced catalytic performance and stability by precisely regulating the atomic-level structure of single-atom alloy catalysts,thereby promoting their widespread application in energy conversion and green chemistry.

关 键 词：single-atom alloy(SAA) atomic regulation charge asymmetry structure hydrogen evolution reaction(HER) 

分 类 号：O643.36[理学—物理化学]