CuIr Single-Atom Alloys Prepared by Pulsed Laser Ablation in Liquidfor pH-Universal Hydrogen Evolution Reaction  

作　　者：Siyu Sun Feifei Zhang Wanlin Liu Rui Zhang Pengfei Yin Jing Yang Cunku Dong Xinming Nie Hui Liu Xiwen Du 

机构地区：[1]Institute of New Energy Materials,School of Materials Science andEngineering,Tianjin University,Tianjin300350,China [2]Department of Electronics,Nankai University,Tianjin300350,China [3]School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou221116,China

出　　处：《Transactions of Tianjin University》2025年第1期4-14,共11页天津大学学报(英文版)

基　　金：supported by the Natural Science Foundation of China(Nos.52022064 and 51971154).

摘　　要：The development of highly active and cost-effective catalysts for the full pH range of the hydrogen evolution reaction(HER)to meet the industrial application demands is an urgent challenge.In this work,the performance and structure–activityrelationships of CuIr alloys prepared by the pulsed laser ablation in liquid technique as full pH range HER catalysts wereinvestigated.Results indicated that Ir is doped into the Cu matrix as single atoms in CuIr-0.1,and CuIr-0.1 single-atom alloys(SAAs)exhibit superior HER performance and stability across the full pH range,with overpotentials of 135,203,and 172 mVat the current density of 10 mA/cm^(2)in acidic,neutral,and alkaline electrolytes,respectively.The enhanced performance ofCuIr-0.1 SAAs can be attributed to the abundant active sites and accelerated reaction kinetics brought about by the electroniceffects.This work successfully alloyed two immiscible metals to improve the catalytic performance,providing an avenue forthe development of highly efficient and versatile HER catalysts for industrial applications.

关 键 词：CuIr single-atom alloys Immiscible alloy Pulsed laser ablation in liquid Hydrogen evolution reaction Full pH range 

分 类 号：O643.36[理学—物理化学]