Carbon nanofiber catalysts containing high-entropy metal phosphides with low-content Ru for highly efficient hydrogen evolution reaction  

作　　者：Peng Wang Jie Zheng Xue-Hao Li Wen-Bo Cui Jin-Hua Liu Yong Wan Jun Zhang Yusuke Yamauchi Zhong-Li Wang Mang Niu Yun-Ze Long 

机构地区：[1]Shandong Key Laboratory of Medical and Health Textile Materials,College of Physics,Qingdao University,Qingdao,266071,China [2]Industrial Research Institute of Nonwovens and Technical Textiles,Shandong Center for Engineered Nonwovens(SCEN),College of Textiles Clothing,Qingdao University,Qingdao,266071,China [3]State Key Laboratory of Bio-Fibers and Eco-textiles,Institute of Biochemical Engineering,College of Materials Science and Engineering,Qingdao University,Qingdao,266071,China [4]School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology(AIBN),The University of Queensland,Brisbane,QLD,4072,Australia [5]Department of Chemical and Biomolecular Engineering,Yonsei University,Seoul,03722,Republic of Korea [6]Department of Materials Process Engineering,Graduate School of Engineering,Nagoya University,Nagoya,464-8603,Japan [7]Tianjin Key Laboratory of Applied Catalysis Science and Technology,School of Chemical Engineering and Technology,Tianjin University,Tianjin,300072,China

出　　处：《Rare Metals》2025年第1期324-335,共12页稀有金属(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.22103045 and 52273077);the State Key Laboratory of Bio-Fibers and Eco-Textiles,Qingdao University(Nos.ZDKT202108,RZ2000003334 and G2RC202022);support from the Australian National Fabrication Facility’s Queensland Node(No.ANFF-Q),the UQ-Yonsei International Research Project,and the JST-ERATO Yamauchi Materials Space-Tectonics Project(No.JPMJER2003).

摘　　要：High-entropy metal phosphide(HEMP)has considerable potential as an electrocatalyst owing to its beneficial properties,including high-entropy alloy synergy as well as the controllable structure and high conductivity of phosphides.Herein,electrospinning and in situ phosphating were employed to prepare three-dimensional(3D)networks of self-supporting HEMP nanofibers with varying degrees of phosphate content.Comprehensive characterizations via X-ray diffraction and X-ray photoelectron spectroscopy,as well as density functional theory calculations,demonstrate that the introduction of phosphorus(P)atoms to HEMP carbon nanofibers mediates their electronic structure,leads to lattice expansion,which in turn enhances their catalytic performance in the hydrogen evolution reaction(HER).Moreover,the formation of metal-P bonds weakens metal-metal interaction and decreases the free energy of hydrogen adsorption,contributing to the exceptional activity observed in the HEMP catalyst.Electrochemical measurements demonstrate that the HEMP-0.75 catalyst with an ultralow loading of 1.22 wt%ruthenium(Ru)exhibits the highest HER catalytic activity and stability in a 1 M KOH electrolyte,achieving a minimal overpotential of 26 mV at a current density of 10 mA·cm^(-2)and Tafel slope of 50.9 mV·dec^(-1).

关 键 词：High-entropy metal phosphide ELECTROSPINNING Hydrogen evolution reaction Self-supporting carbon nanofibers 

分 类 号：O64[理学—物理化学]