Multicomponent transition metal phosphide for oxygen evolution

作     者：Lihua Liu Ning Li Jingrui Han Kaili Yao Hongyan Liang Lihua Liu;Ning Li;Jingrui Han;Kaili Yao;Hongyan Liang

作者机构：College of Innovation and EntrepreneurshipShanghai Jianqiao UniversityShanghai 201306China School of Materials Science and EngineeringTianjin UniversityTianjin 300350China Qinghai Provincial Key Laboratory of Nanomaterials and NanotechnologyQinghai Minzu UniversityQinghai 810007China Key Laboratory of Efficient Utilization of Low and Medium Grade EnergyMinistry of EducationTianjin UniversityTianjin 300350China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第3期

页      面：503-512页

核心收录：

学科分类：0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Nat-ural Science Foundation of China(No.51771132) the Open Fund Project of Qinghai Minzu University-Nanoma-terials and Nanotechnology Team&Platform(No.2021-QHMU-PI-nano-KF01). 

主　　题：multicomponent transition metal phosphides electrocatalytic oxygen evolution reaction MXene synergistic effect 

摘      要：Transition metal phosphides(TMPs)have exhibited decent performance in an oxygen evolution reaction(OER),which is a kinetic bottleneck in many energy storages and conversion systems.Most reported catalysts are composed of three or fewer metallic components.The inherent complexity of multicomponent TMPs with more than four metallic components hinders their investigation in rationally designing the structure and,more importantly,comprehending the component-activity correlation.Through hydrothermal growth and subsequent phosphor-ization,we reported a facile strategy for combining TMPs with tunable elemental compositions(Ni,Fe,Mn,Co,Cu)on a two-dimensional ti-tanium carbide(MXene)flake.The obtained TMPs/MXene hybrid nanostructures demonstrate homogeneously distributed elements.They ex-hibit high electrical conductivity and strong interfacial interaction,resulting in an accelerated reaction kinetics and long-term stability.The res-ults of different component catalysts’OER performance show that NiFeMnCoP/MXene is the most active catalyst,with a low overpotential of 240 mV at 10 mA·cm−2,a small Tafel slope of 41.43 mV·dec−1,and a robust long-term electrochemical stability.According to the electrocata-lytic mechanism investigation,the enhanced NiFeMnCoP/MXene OER performance is due to the strong synergistic effect of the multi-ele-mental composition.Our work,therefore,provides a scalable synthesis route for multi-elemental TMPs and a valuable guideline for efficient MXene-supported catalysts design.