首页|Hierarchical assembly of NiFe-PB-derived bimetallic phosphides on 3D Ti3C2 MXene ribbon networks for efficient oxygen evolution

Hierarchical assembly of NiFe-PB-derived bimetallic phosphides on 3D Ti3C2 MXene ribbon networks for efficient oxygen evolution

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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 Ti3C2 MXene ribbon/NiFePx@graphitic N-doped carbon(NC)heterostruc-ture that enables the formation of three-dimensional(3D)Ti3C2 MXene ribbon networks and bimetallic phosphide nanoarrays.With the assistance of HF etching and KOH shearing,the MXene sheets were successfully trans-formed into 3D MXene networks with interlaced MXene ribbons.Notably,a hydrothermal method,ion exchange route,and phosphorization process were used to anchor NiFePx@NC nanocubes derived from Ni(OH)2/NiFe-based Prussian blue(NiFe-PB)onto the MXene ribbon network.The resulting MXene ribbon/NiFePx@NC het-erostructure demonstrated enhanced oxygen evolution reaction(OER)activity,characterized by a low overpo-tential(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/NiFePx@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.

Metal phosphidesPrussian blue nanocubesTi3C2 MXene ribbonsInterfacial matchingOER

Chulong Jin、Hanlei Peng、Xiaojun Zeng、Zhenyuan Liu、Deng Ding

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School of Materials Science and Engineering Jingdezhen Ceramic University,Jingdezhen 333403,China

School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China

College of Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China

National Natural Science Foundation of ChinaJiangxi Provincial Natural science FoundationTraining Program for Academic and Technical Leaders of Major Disciplines in Jiangxi ProvinceScience and Technology Project of the Jiangxi Provincial Department of Education

2226901020224BAB21402120212BCJ23020GJJ211305

2024

10.1016/j.chphma.2023.09.001

化学物理材料(英文)

化学物理材料(英文)

ISSN：
年,卷(期)：2024.3(1)
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