面向碱性析氢反应的原子级优化Fe-Pt金属间化合物催化剂表面终结态探索

作     者：梁庆 孟繁玲 李文文 邹旭 宋可心 葛昕 姜周 刘玉华 刘美琦 李振宇 董韬文 陈中军 张伟 郑伟涛 Qing Liang;Fanling Meng;Wenwen Li;Xu Zou;Kexin Song;Xin Ge;Zhou Jiang;Yuhua Liu;Meiqi Liu;Zhenyu Li;Taowen Dong;Zhongjun Chen;Wei Zhang;Weitao Zheng

作者机构：Key Laboratory of Automobile Materials(Ministry of Education)School of Materials Science and EngineeringElectron Microscopy CenterInternational Center of Future ScienceJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchun 130012China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第8期

页      面：1091-1099页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(51872115 and 52101256) Beijing Synchrotron Radiation Facility(BSRF)4B9A 

主　　题：Intermetallic Hydrogen evolution reaction Surface Catalyst 

摘      要：Controlling the atomic arrangement of elemental atoms in intermetallic catalysts to govern their surface and subsurface properties is a crucial but challenging endeavor in electrocatalytic *** hydrogen evolution reaction(HER),adjusting the d-band center of the conventional noble-metallic Pt by introducing Fe enables the optimization of catalytic ***,a notable gap exists in research on the effective transition from disordered Fe/Pt alloys to highly ordered intermetallic compounds(IMCs)such as FePt_(3)in the alkaline HER,hampering their broader *** this study,a series of catalysts FePt_(3-x)H(x=5,6,7,8 and 9)supported on carbon nanotubes(CNTs)were synthesized via a simple impregnation method,along with a range of heat treatment processes,including annealing in a reductive atmosphere,to regulate the order degree of the arrangement of Fe/Pt atoms within the FePt_(3)*** using advanced microscopy and spectroscopy techniques,we systematically explored the impact of the order degree of FePt_(3)in the *** as-prepared FePt_(3)-8H exhibited notable HER catalytic activity with low overpotentials(η=37 mV in 1.0 mol L^(-1)KOH)at j=10 mA cm^(-2).The surface of the L1_(2)FePt_(3)-8H catalyst was demonstrated to be *** Pt on the surface was not easily oxidized due to the unique Fe/Pt coordination,resulting in significant enhancement of HER performance.