Constructing Ultrathin W-Doped NiFe Nanosheets via Facile Electrosynthesis as Bifunctional Electrocatalysts for Efficient Water Splitting.

Exploring cost-effective and efficient bifunctional electrocatalysts via simple fabrication strategies is strongly desired for practical water splitting. Herein, an easy and fast one-step electrodeposition process is developed to fabricate W-doped NiFe (NiFeW)-layered double hydroxides with ultrathin nanosheet features at room temperature and ambient pressure as bifunctional catalysts for water splitting. Notably, the NiFeW nanosheets require overpotentials of only 239 and 115 mV for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, to reach a current density of 10 mA/cm2 in alkaline media. Their exceptional performance is further demonstrated in a full electrolyzer configuration with the NiFeW as both anode and cathode catalysts, which achieves a low cell voltage of 1.59 V at 10 mA/cm2, 110 mV lower than that of the commercial IrO2 (anode) and Pt (cathode) catalysts. Moreover, the NiFeW nanosheets are superior to various recently reported bifunctional electrocatalysts. Such remarkable performances mainly ascribe to W doping, which not only effectively modulates the electrocatalyst morphology but also engineers the electronic structure of NiFe hydroxides to boost charge-transfer kinetics for both the OER and HER. Hence, the ultrathin NiFeW nanosheets with an efficient fabrication strategy are promising as bifunctional electrodes for alkaline water electrolyzers.

[1]  Dezheng Yang,et al.  Water-sprouted, plasma-enhanced Ni-Co phospho-nitride nanosheets boost electrocatalytic hydrogen and oxygen evolution , 2020 .

[2]  P. Chu,et al.  NiFe-layered double hydroxide synchronously activated by heterojunctions and vacancies for the oxygen evolution reaction. , 2020, ACS applied materials & interfaces.

[3]  H. Cui,et al.  Constructing Pure Phase Tungsten-Based Bimetallic Carbide Nanosheet as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting. , 2020, Small.

[4]  H. Alsulami,et al.  Carbon-Supported Nickel Nanoparticles on SiO2 Cores for Protein Adsorption and Nitroaromatics Reduction , 2020 .

[5]  H. Alsulami,et al.  Surface modification of carbon fibers with hydrophilic Fe3O4 nanoparticles for nickel-based multifunctional composites , 2020 .

[6]  B. Pivovar,et al.  Electrocatalysts: Building Electron/Proton Nanohighways for Full Utilization of Water Splitting Catalysts (Adv. Energy Mater. 16/2020) , 2020 .

[7]  Zhihao Li,et al.  Demystifying the active roles of NiFe-based oxides/(oxy)hydroxides for electrochemical water splitting under alkaline conditions , 2020 .

[8]  X. Lu,et al.  Initiating an efficient electrocatalyst for water splitting via valence configuration of cobalt-iron oxide , 2019 .

[9]  Jiazang Chen,et al.  Revealing Energetics of Surface Oxygen Redox from Kinetic Fingerprint in Oxygen Electrocatalysis. , 2019, Journal of the American Chemical Society.

[10]  Xiaotong Zhang,et al.  Prussian blue analogues-derived bimetallic phosphide hollow nanocubes grown on Ni foam as water splitting electrocatalyst , 2019, Journal of Materials Science.

[11]  Xiujun Fan,et al.  (003)-Facet-exposed Ni3S2 nanoporous thin films on nickel foil for efficient water splitting , 2019, Applied Catalysis B: Environmental.

[12]  Haixia Li,et al.  Molybdenum carbide in-situ embedded into carbon nanosheets as efficient bifunctional electrocatalysts for overall water splitting , 2019, Electrochimica Acta.

[13]  W. Chu,et al.  Ultrathin Cobalt Oxide Layers as Electrocatalysts for High‐Performance Flexible Zn–Air Batteries , 2019, Advanced materials.

[14]  Ying Wang,et al.  MOF‐Derived Ni‐Doped CoS 2 Grown on Carbon Fiber Paper for Efficient Oxygen Evolution Reaction , 2019, ChemElectroChem.

[15]  Ying Wang,et al.  Facile synthesis of MOF-Derived Co@CoNx/bamboo-like carbon tubes for efficient electrocatalytic water oxidation , 2019, Electrochimica Acta.

[16]  Min Zhang,et al.  Fabrication of ultrafine nickel nanoparticles anchoring carbon fabric composites and their High catalytic performance , 2019, Colloids and Surfaces A: Physicochemical and Engineering Aspects.

[17]  Qingliang Liao,et al.  Engineering an Earth‐Abundant Element‐Based Bifunctional Electrocatalyst for Highly Efficient and Durable Overall Water Splitting , 2019, Advanced Functional Materials.

[18]  Shaojun Guo,et al.  Multimetal Borides Nanochains as Efficient Electrocatalysts for Overall Water Splitting. , 2018, Small.

[19]  Ibrahim Saana Amiinu,et al.  Scalable cellulose-sponsored functionalized carbon nanorods induced by cobalt for efficient overall water splitting , 2018, Carbon.

[20]  D. Das,et al.  In Situ Fabrication of a Nickel/Molybdenum Carbide-Anchored N-Doped Graphene/CNT Hybrid: An Efficient (Pre)catalyst for OER and HER. , 2018, ACS applied materials & interfaces.

[21]  S. Babu,et al.  Bipolar plate development with additive manufacturing and protective coating for durable and high-efficiency hydrogen production , 2018, Journal of Power Sources.

[22]  Peng Chen,et al.  Graphene quantum dot engineered nickel-cobalt phosphide as highly efficient bifunctional catalyst for overall water splitting , 2018, Nano Energy.

[23]  W. Goddard,et al.  In Silico Discovery of New Dopants for Fe-Doped Ni Oxyhydroxide (Ni1- xFe xOOH) Catalysts for Oxygen Evolution Reaction. , 2018, Journal of the American Chemical Society.

[24]  Ke R. Yang,et al.  Nitrogen-doped tungsten carbide nanoarray as an efficient bifunctional electrocatalyst for water splitting in acid , 2018, Nature Communications.

[25]  Xiao Shang,et al.  Ni-Se nanostructrures dependent on different solvent as efficient electrocatalysts for hydrogen evolution reaction in alkaline media , 2018 .

[26]  S. Pawar,et al.  Cobalt Iron Hydroxide as a Precious Metal-Free Bifunctional Electrocatalyst for Efficient Overall Water Splitting. , 2018, Small.

[27]  Bing Li,et al.  Ultrathin Porous NiFeV Ternary Layer Hydroxide Nanosheets as a Highly Efficient Bifunctional Electrocatalyst for Overall Water Splitting. , 2018, Small.

[28]  Zongping Shao,et al.  Rationally Designed Hierarchically Structured Tungsten Nitride and Nitrogen‐Rich Graphene‐Like Carbon Nanocomposite as Efficient Hydrogen Evolution Electrocatalyst , 2017, Advanced science.

[29]  Yu Huang,et al.  General synthesis and definitive structural identification of MN4C4 single-atom catalysts with tunable electrocatalytic activities , 2018, Nature Catalysis.

[30]  Shaojun Guo,et al.  Oxygen Vacancies Dominated NiS2/CoS2 Interface Porous Nanowires for Portable Zn–Air Batteries Driven Water Splitting Devices , 2017, Advanced materials.

[31]  C. Tung,et al.  NiFe Layered Double Hydroxide Nanoparticles on Co,N‐Codoped Carbon Nanoframes as Efficient Bifunctional Catalysts for Rechargeable Zinc–Air Batteries , 2017 .

[32]  Hongbing Ji,et al.  Cost‐Effective Alkaline Water Electrolysis Based on Nitrogen‐ and Phosphorus‐Doped Self‐Supportive Electrocatalysts , 2017, Advanced materials.

[33]  F. Gao,et al.  Electronic and Morphological Dual Modulation of Cobalt Carbonate Hydroxides by Mn Doping toward Highly Efficient and Stable Bifunctional Electrocatalysts for Overall Water Splitting. , 2017, Journal of the American Chemical Society.

[34]  Zongping Shao,et al.  A Perovskite Nanorod as Bifunctional Electrocatalyst for Overall Water Splitting , 2017 .

[35]  Lichun Yang,et al.  MoS2–Ni3S2 Heteronanorods as Efficient and Stable Bifunctional Electrocatalysts for Overall Water Splitting , 2017 .

[36]  M. Jaroniec,et al.  Self-Templating Synthesis of Hollow Co3 O4 Microtube Arrays for Highly Efficient Water Electrolysis. , 2017, Angewandte Chemie.

[37]  Zhoucheng Wang,et al.  Efficient Overall Water-Splitting Electrocatalysis Using Lepidocrocite VOOH Hollow Nanospheres. , 2017, Angewandte Chemie.

[38]  Todd J. Toops,et al.  Discovery of true electrochemical reactions for ultrahigh catalyst mass activity in water splitting , 2016, Science Advances.

[39]  A. Vojvodić,et al.  Homogeneously dispersed multimetal oxygen-evolving catalysts , 2016, Science.

[40]  S. Boettcher,et al.  Pulse-Electrodeposited Ni–Fe (Oxy)hydroxide Oxygen Evolution Electrocatalysts with High Geometric and Intrinsic Activities at Large Mass Loadings , 2015 .

[41]  Zhoucheng Wang,et al.  Porous Two-Dimensional Nanosheets Converted from Layered Double Hydroxides and Their Applications in Electrocatalytic Water Splitting , 2015 .

[42]  Wei Xing,et al.  NiSe Nanowire Film Supported on Nickel Foam: An Efficient and Stable 3D Bifunctional Electrode for Full Water Splitting. , 2015, Angewandte Chemie.

[43]  Charles C. L. McCrory,et al.  Benchmarking hydrogen evolving reaction and oxygen evolving reaction electrocatalysts for solar water splitting devices. , 2015, Journal of the American Chemical Society.

[44]  Jens K Nørskov,et al.  Identification of highly active Fe sites in (Ni,Fe)OOH for electrocatalytic water splitting. , 2015, Journal of the American Chemical Society.

[45]  S. Boettcher,et al.  Nickel-iron oxyhydroxide oxygen-evolution electrocatalysts: the role of intentional and incidental iron incorporation. , 2014, Journal of the American Chemical Society.

[46]  Jingguang G. Chen,et al.  Correlating the hydrogen evolution reaction activity in alkaline electrolytes with the hydrogen binding energy on monometallic surfaces , 2013 .

[47]  Fan Zhang,et al.  Water splitting by tungsten oxide prepared by atomic layer deposition and decorated with an oxygen-evolving catalyst. , 2011, Angewandte Chemie.