Hierarchical assembly of NiFe-PB-derived bimetallic phosphides on 3D Ti_(3)C_(2) MXene ribbon networks for efficient oxygen evolution  

作　　者：Chulong Jin Hanlei Peng Xiaojun Zeng Zhenyuan Liu Deng Ding 

机构地区：[1]School of Materials Science and Engineering,Jingdezhen Ceramic University,Jingdezhen 333403,China [2]School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China [3]College of Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China

出　　处：《ChemPhysMater》2024年第1期118-124,共7页化学物理材料（英文）

基　　金：supported by the National Natural Science Foun-dation of China(No.22269010);the Jiangxi Provincial Natural Science Foundation(No.20224BAB214021);the Training Program for Academic and Technical Leaders of Major Disciplines in Jiangxi Province(No.20212BCJ23020);the Science and Technology Project of the Jiangxi Provincial Department of Education(No.GJJ211305).

摘　　要：The development of MXene-based heterostructures for electrocatalysis has garnered significant attention owing to their potential as high-performance catalysts that play a pivotal role in hydrogen energy.Herein,we present a multistep strategy for the synthesis of a Ti_(3)C_(2) MXene ribbon/NiFePx@graphitic N-doped carbon(NC)heterostructure that enables the formation of three-dimensional(3D)Ti_(3)C_(2) MXene ribbon networks and bimetallic phosphide nanoarrays.With the assistance of HF etching and KOH shearing,the MXene sheets were successfully transformed into 3D MXene networks with interlaced MXene ribbons.Notably,a hydrothermal method,ion exchange route,and phosphorization process were used to anchor NiFeP_(x)@NC nanocubes derived from Ni(OH)_(2)/NiFe-based Prussian blue(NiFe-PB)onto the MXene ribbon network.The resulting MXene ribbon/NiFeP_(x)@NC heterostructure demonstrated enhanced oxygen evolution reaction(OER)activity,characterized by a low overpotential(164 mV at a current density of 10 mA cm^(-2))and a low Tafel slope(45 mV dec^(-1)).At the same time,the MXene ribbons/NiFeP_(x)@NC heterostructure exhibited outstanding long-term stability,with a 12 mV potential decay after 5000 cyclic voltammetry(CV)cycles.This study provides a robust pathway for the design of efficient MXene-based heterostructured electrocatalysts for water splitting.

关 键 词：Metal phosphides Prussian blue nanocubes Ti_(3)C_(2)MXene ribbons Interfacial matching OER 

分 类 号：O643.36[理学—物理化学]