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Designing heterostructured FeP–CoP for Oxygen evolution reaction:Interface engineering to enhance electrocatalytic performance

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Nano Research 2023年第5期16卷 6601-6607页

作者： Shuang Hou Ansai Zhang Qi Zhou Yingjie Wen Sixie Zhang Linfeng Su Xinjie Huang Tian Wang Kun Rui Cheng Wang Huiling Liu Zhiyi Lu Peilei He Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin Key Laboratory of Advanced Functional Porous MaterialsTianjin University of TechnologyTianjin 300384China Institute of New Energy Technology Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816China

It is significant to develop highly efficient electrocatalysts for energy conversion systems.Interface engineering is one of the most feasible approaches to effectively enhance the electrocatalytic activity.Herein,the density functional theory(DFT)calculations predict that the potential barriers of Fe sites at the interface of FeP–CoP heterostructures are lower than that of Fe sites in FeP nanoparticles(NPs),Co sites in CoP NPs,or Co sites in heterostructures.Motivated by the DFT calculation results,FeP–CoP heterostructures have been designed and synthesized by a metal–organic frameworks(MOFs)confined-phosphorization method.The FeP–CoP exhibits the lowest overpotential of 230 mV at the current density of 10 mA·cm^(−2)for Oxygen evolution reaction(OER),compared with FeP(470 mV)and CoP(340 mV),which outperforms most of transition metal-based catalysts.The Tafel analysis of FeP–CoP heterostructures shows an improved reaction kinetic pathway with the smallest slope of 90.3 mV·dec^(−1),as compared to the Tafel slopes of FeP NPs(137 mV·dec^(−1))and CoP NPs(114 mV·dec^(−1)).And the FeP–CoP shows extraordinary long-term stability over 24 h.The excellent activity and long-term stability of FeP–CoP derive from the synergistic effect between FeP and CoP.

关键词： electrocatalysts interface engineering FeP–CoP heterostructures Oxygen evolution reaction synergistic effect

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Acid-stable antimonate based catalysts for the electrocatalytic Oxygen evolution reaction

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Nano Research 2023年第4期16卷 4691-4697页

作者： Xiaoping Gao Huang Zhou Zhe Wang Gang Zhou Jin Wang Yuen Wu College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071China School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China Preservation Technology Advanced Research CenterHefei Hualing Co.LtdHefei 230000China School of Science Hubei University of TechnologyWuhan 430068China

Acid-stable and highly active catalysts for the electrocatalytic Oxygen evolution reaction(OER)are paramount to the advancement of electrochemical technologies for clean energy conversion and utilization.In this work,based on the density functional theory(DFT)calculations,we systematically investigated the MSb_(2)O_(6)(M=Fe,Co,and Ni)and transition metal(TM)doped MSb_(2)O_(6)(TM-MSb_(2)O_(6),TM=Mn,Fe,Co,Ni,Cu,Zn,Ru,Rh,Pd,Ir,and Pt)as potential antimonate-based electrocatalysts for the OER.The stability and OER activity of these considered electrocatalysts were systematically studied under acidic conditions.It was found that Rh-NiSb_(2)O_(6),Pt-CoSb_(2)O_(6),Rh-FeSbO4,and Co-NiSb_(2)O_(6)can serve as efficient and stable OER electrocatalysts,and their OER catalytic activities are better than that of the current state-of-the-art OER catalyst(IrO2).Our findings highlight a family of promising antimonate-based OER electrocatalysts for future experimental verification.

关键词： Oxygen evolution reaction antimonates acid-stable oxides electrocatalysis density functional theory

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Unveiling the role of Zn dopants in NiFe phosphide nanosheet for Oxygen evolution reaction

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Progress in Natural Science:Materials International 2023年第1期33卷 74-82页

作者： Chendong Kou Jingrui Han Haibin Wang Mei Han Hongyan Liang School of Materials Science and Engineering Tianjin University Key Laboratory of Efficient Utilization of Low and Medium Grade Energy Tianjin University

Transition metal phosphides have been recognized as promising electrocatalysts for Oxygen evolution reaction(OER) due to their low cost and high activity. However, the insufficient exposed active region limited the OER performance. Recently, the introduction of sacrificial dopants has been considered an effective strategy to enlarge the surface area. Herein, the Zn dopants are introduced in NiFe phosphide(NiFeZnP) nanosheet, which work as the sacrificial dopants to generate more exposed active NiFe sites and promote the formation of the NiFeOOH active phase during OER process. The optimized Zn-doped NiFeP catalyst shows an overpotential of ≈203 mV to reach a current density of 10 mA cm-2in 1 M KOH, and a stability of 100 h at 1000 mA cm-2. Overall, this work provides a sacrificial Zn doping strategy to prepare highly efficient OER electrocatalysts.

关键词： Transition metal phosphide Sacrificial dopant Self-supported electrode Oxygen evolution reaction

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Nickel Sulfide Modified NiCu Nanoalloy with Excellent Oxygen evolution reaction Properties Prepared through Electrospinning and Heat Treatment

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 320-326页

作者：李涛凌帅 ZHONG Shujie LOU Qiongyue Department of Materials Engineering School of Mechanical EngineeringChengdu UniversityChengdu 610106China

Ni^(2+)/Cu^(2+)/SO_(4)^(2-)/polyvinyl alcohol precursor fibers with uniform diameters were prepared through electrospinning.Nickel-based composite nanoalloys containing Ni,Cu,and S were prepared through heat treatment in an Ar atmosphere.The experimental results show that the main components of the prepared nanoalloys are NiCu,Ni_(3)S_(2),Ni,and C.The nanoalloys exhibit fine grain sizes about 200-500 nm,which can increase with increasing heat treatment temperature.Electrochemical test results show that the nickel sulfidemodified NiCu nanoalloy composites exhibit excellent Oxygen evolution reaction properties,and the Oxygen evolution reaction properties gradually improve with the increasing heat treatment temperature.The sample prepared at 1 000℃ for 40 min show a low overpotential of 423 mV and a small Tafel slope of 134 mV·dec^(-1) at a current density of 10 mA·cm^(-2).

关键词： NiCu nanoalloy Ni_(3)S_(2) structure transformation Oxygen evolution reaction

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CeO_(2)nanoparticles-decorated CoP nanocubes for accelerating alkaline electrocatalytic Oxygen evolution reaction

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Particuology 2023年第10期81卷 38-44页

作者： Xueda Ding Yuxin Huang Dongyang Chen Zailai Xie College of Chemistry Fuzhou UniversityFuzhou350116China College of Materials Science and Engineering Fuzhou UniversityFuzhou350116China

Constructing heterojunction interface as an active catalyst is an effective strategy to boost electrocatalytic activity of Oxygen evolution reaction(OER).Herein,we report an interfacial CoP/CeO_(2)heterostructure catalyst constructed by interface engineering and selective phosphorization procedure.X-ray photoelectron spectroscopy(XPS)suggests that coupling CeO_(2)nanoparticles on the surface of CoP will generate interfacial interaction at the two-phase interface,resulting in electron transfer between CoP and CeO_(2)components at the interface.Benefitting from the interfacial interaction,large exposed interface area,and luxuriant mesopores structure,CoP/CeO_(2)shows fascinating alkaline OER performance.At the current densities of 10 and 50 mA cm^(−2),the optimal CoP/CeO_(2)heterojunction exhibits lower overpotential(257 and 298 mV)than either CoP(288 and 354 mV)or RuO_(2)(305 and 409 mV).This work provides a facile synthetic protocol for constructing heterostructure interfaces to improve OER performance.

关键词： Prussian blue analogue CeO_(2)nanoparticles CoP/CeO_(2) Oxygen evolution reaction

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Super-exchange effect induced by early 3d metal doping on NiFe_(2)O_(4)(001)surface for Oxygen evolution reaction

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Journal of Energy Chemistry 2023年第3期78卷 21-29,I0002页

作者： Shuhao Wang Xinyan Liu Xiang Chen Kamran Dastafkan Zhong-Heng Fu Xin Tan Qiang Zhang Chuan Zhao School of Chemistry The University of New South WalesSydneyNSW 2052Australia Beijing Key Laboratory of Green Chemical reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Integrated Materials Design Laboratory Department of Applied MathematicsResearch School of PhysicsThe Australian National UniversityCanberraACT 2601Australia

Understanding the intrinsic activity of Oxygen evolution reaction(OER) is crucial for catalyst design.To date,different metal-doping strategies have been developed to achieve this,but the involving mechanisms remain unclear.Here,the electronic structure of the transition metal-doped NiFe_(2)O_(4)(001) surface is scrutinized for OER intrinsic activity using density functional theory calculations.Five 3d-orbital filling metals(Ti,V,Cr,Mn,and Co) are introduced as dopants onto A-and B-layers of the NiFe_(2)O_(4)(001) surface,and variation of oxidation states over Fe sites is observed on B-layer.Analyzing the magnetic moment and charge transfer of surface cation sites reveals that the variation of Fe oxidation states originates from the super-exchange effect and is influenced by the t2g-electron configuration of 3d metal dopants.This trend governs the generation of highly-active Fe3+sites on the B-layer,the adsorption strength of OER intermediates,i.e.,*O and*OH,and therefore the intrinsic activity.The finding of super-exchange mechanism induced by 3d early metal doping offers insights into electronic structure tailoring strategies for improving the intrinsic activity of OER electrocatalysts.

关键词： Oxygen evolution reaction NiFe spinel Oxidation states Super-exchange mechanism Density functional theory

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RuO_(2) clusters derived from bulk SrRuO_(3):Robust catalyst for Oxygen evolution reaction in acid

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Nano Research 2022年第3期15卷 1959-1965页

作者： Muwei Ji Xin Yang Shengding Chang Wenxing Chen Jin Wang Dongsheng He Yao Hu Qian Deng You Sun Bo Li Jingyu Xi Tomoaki Yamada Jiatao Zhang Hai Xiao Caizhen Zhu Jia Li Yadong Li College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China Institute of Low-Dimensional Materials Genome Initiative College of Chemistry and Environmental Engineering of Shenzhen UniversityShenzhen 518060China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Materials Characterization and Preparation Center Southern University of Science and TechnologyShenzhen 518055China Department of Energy Engineering Nagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan Department of Chemistry Tsinghua UniversityBeijing 100084China

Developing highly efficient Oxygen evolution reaction(OER)catalyst for the acidic corrosive operating conditions is a challenging task.Herein,we report the synthesis of uniform RuO_(2)clusters with~2 nm in size via electrochemical leaching of Sr from SrRuO_(3) ceramic in acid.The RuO_(2)clusters exhibit ultrahigh OER activity with overpotential of~160 mV at 10 mA·cm_(geo)^(−2) in 1.0 M HClO4 solution for 30-h testing.The extended X-ray absorption fine structure measurement reveals enlarged Jahn-Teller distortion of Ru-O octahedra in the RuO_(2)clusters compared to its bulk counterpart.Density function theory calculations show that the enhanced Jahn-Teller distortion can improve the intrinsic OER activity of RuO_(2).

关键词： Oxygen evolution reaction RuO_(2)cluster electrochemical leaching acid solution

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In-situ study for the elastic structure evolutions of threedimensional Ir-O framework during the Oxygen evolution reaction in acid

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Nano Research 2023年第7期16卷 9022-9030页

作者： Jun Qi Xinyu Zhong Huiyan Zeng Chao Wang Zhongfei Liu Jiajun Chen Long Gu Enna Hong Mengxian Li Jiong Li Chunzhen Yang School of Materials Shenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China University of Chinese Academy of Sciences Beijing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China

Understanding the dynamic structural and chemical evolutions at the catalyst-electrolyte interfaces is crucial for the development of active and stable electrocatalysts.In this work,β-Li_(2)IrO_(3)is employed as a model catalyst for the Oxygen evolution reaction(OER).Its elastic three-dimensional Ir-O framework enables us to investigate the Li^(+)cation dissolution-induced structure evolutions and the formation mechanism of amorphous IrO_(x)species.Electrochemical measurements by rotating ring disk electrode(RRDE)reveal that up to 60%of the measured OER current can be ascribed to catalyst degradation.A series of in-situ X-ray diffraction spectroscopy(XRD),X-ray absorption spectroscopy(XAS),and Raman spectroscopy are conducted.Structure vibration is observed with oxidation states of Ir being reduced abnormally during OER at high potentials.It’s hypothesized that the reversible proton intercalations are responsible for the Ir turn-over mechanism.Results of this work demonstrate a stable and elastic iridate structure and reveal the initial catalyst degradation behaviors during OER in acid media.

关键词： Oxygen evolution reaction structure evolution amorphization acid media catalyst degradation

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Recent advances in metal-organic frameworks for Oxygen evolution reaction electrocatalysts

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中国科学:化学英文版 2023年第10期66卷 2754-2779页

作者： Ming Liu Yin-Qiang Zhang Xuemin Wang Feifan Lang Na Li Xian-He Bu School of Materials Science and Engineering Nankai UniversityTianjin 300350China State Key Laboratory of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin 300071China

The anodic Oxygen evolution reaction(OER)can be combined with various cathodic reactions to enable the electrochemical synthesis of diverse chemicals and fuels,particularly in water electrolysis for hydrogen production.It is however exhibiting a high overpotential due to the sluggish four-electron transfer process,which is considered the decisive reaction in energy conversion systems.In recent years,metal-organic frameworks(MOFs)have emerged as the ideal catalysts for accelerating OER.This is primarily because of their orderly porous architecture,structural tailorability,and compositional diversity.This review systematically summarizes the recent research progress in pristine MOF electrocatalysts for OER,which covers the construction strategies and electrocatalytic performance of more than eight types of MOFs.Additionally,the partial/complete structural reconstructions and their effects on MOF-based OER electrocatalysts are highlighted.In particular,the development process of“discovery,explanation,and utilization”for the structural reconstructions of MOF electrocatalysts is outlined.Furthermore,the catalytic mechanisms are elaborated in detail,aiming to provide insight into the rational design and performance optimization of MOF-based OER electrocatalysts.The challenges and future perspectives of MOF-based OER electrocatalysts for industrial applications are also discussed.

关键词： metal-organic frameworks electrocatalysts Oxygen evolution reaction structural reconstruction active sites

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Dynamic investigation of oxygen defects on transition metal-based electrocatalysts:formation,characterization,and mechanism during alkaline Oxygen evolution reaction

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Science China Chemistry 2023年第8期66卷 2221-2237页

作者： Rongrong Zhang Qilong Wu Peter Sherrell Daohao Li Keke Huang Jun Chen Xiangdong Yao State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012China Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science Australian Institute for Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia School of Science STEM CollegeRMIT UniversityMelbourneVIC3001Australia State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and EngineeringQingdao UniversityQingdao266071China College of Advanced Energy Shenzhen CampusSun Yat-Sen University(SYSU)Shenzhen518100China

oxygen defects play a critical role in the electrocatalytic Oxygen evolution reaction(OER).Therefore,in-depth understanding the structure-activity-mechanism relationship of these defects is the key to design efficient OER electrocatalysts.This relationship needs to be understood dynamically due to the potential for irreversible phase transitions during OER.Consequently,significant efforts have been devoted to study the dynamic evolution of oxygen defects to shed light on the OER mechanism.This review critically examines and analyzes the dynamic processes occurring at oxygen defect sites during OER,including defect formation and defect evolution mechanisms,along with the advanced characterization techniques needed to understand these processes.This review aims to provide a comprehensive understanding of high-efficiency electrocatalysts,with a particular emphasis on the importance of in situ monitoring the dynamic evolution of oxygen defects,providing a new perspective towards efficient OER electrocatalyst design.

关键词： Oxygen evolution reaction oxygen defects dynamic evolution in situ characterization electrocatalysis

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