Trace Iridium Engineering on Nickel Hydroxide Nanosheets as High‐active Catalyst for Overall Water Splitting

Designing cost‐effective electrocatalysts for electrochemical water splitting to generate the hydrogen energy as a future energy source is pivotal. An excellent catalyst should show high catalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under different pH conditions. Here, we highlighted a high‐efficient catalyst of Ir‐doped Ni(OH)2 nanosheets grown on Ni foam (Ir−Ni(OH)2/NF) as a high‐efficient catalyst for overall water splitting in both alkaline and neutral conditions via a simple one‐step hydrothermal strategy. The optimized Ir3−Ni(OH)2/NF shows superior HER and OER activity in neutral and alkaline electrolytes. The doped Ir ions can not only serve as catalytic sites for water dissociation, but also decrease the charge density of the adjacent bridge oxygen to facilitate HER kinetics. As a result, Ir3−Ni(OH)2/NF electrolyzer exhibits superior performance of a small potential of 1.64 V under neutral condition, which is obviously lower than that of a string of recently reported neutral‐pH electrocatalysts.

[1]  Fengna Xi,et al.  Confinement of fluorine anions in nickel-based catalysts for greatly enhancing oxygen evolution activity. , 2020, Chemical communications.

[2]  V. Uahengo,et al.  Recent Advances on the Use of Nickel Nano Layered Double Hydroxides as Green, and Efficient, Catalysts for Water Splitting , 2020, Catalysis Letters.

[3]  Yunyong Li,et al.  Callistemon-like Zn and S codoped CoP nanorod clusters as highly efficient electrocatalysts for neutral-pH overall water splitting , 2019, Journal of Materials Chemistry A.

[4]  Jiyang Liu,et al.  Oxygen vacancies confined in Co3O4 quantum dots for promoting oxygen evolution electrocatalysis , 2019, Inorganic Chemistry Frontiers.

[5]  Yanhui Liu,et al.  Fe/Fe3 C Nanoparticles Encapsulated in N-Doped Hollow Carbon Spheres as Efficient Electrocatalysts for the Oxygen Reduction Reaction over a Wide pH Range. , 2019, Chemistry.

[6]  Yunqi Liu,et al.  Neutral-pH overall water splitting catalyzed efficiently by a hollow and porous structured ternary nickel sulfoselenide electrocatalyst , 2019, Journal of Materials Chemistry A.

[7]  Xi‐Wen Du,et al.  Ir–O–V Catalytic Group in Ir-Doped NiV(OH)2 for Overall Water Splitting , 2019, ACS Energy Letters.

[8]  G. Cheng,et al.  IrW nanobranches as an advanced electrocatalyst for pH-universal overall water splitting. , 2019, Nanoscale.

[9]  Jun Luo,et al.  Porous Mn-Doped FeP/Co3 (PO4 )2 Nanosheets as Efficient Electrocatalysts for Overall Water Splitting in a Wide pH Range. , 2019, ChemSusChem.

[10]  Kentaroh Watanabe,et al.  Three-Dimensional Nanoporous Co9S4P4 Pentlandite as a Bifunctional Electrocatalyst for Overall Neutral Water Splitting. , 2019, ACS applied materials & interfaces.

[11]  Xuebin Wang,et al.  CoO-modified Co4N as a heterostructured electrocatalyst for highly efficient overall water splitting in neutral media , 2018 .

[12]  Guangjin Zhang,et al.  Synthesis of polyoxometalates derived bifunctional catalyst towards efficient overall water splitting in neutral and alkaline medium. , 2018, Journal of colloid and interface science.

[13]  Shuhong Yu,et al.  A Janus Nickel Cobalt Phosphide Catalyst for High-Efficiency Neutral-pH Water Splitting. , 2018, Angewandte Chemie.

[14]  N. Zhang,et al.  Dynamic Migration of Surface Fluorine Anions on Cobalt-Based Materials to Achieve Enhanced Oxygen Evolution Catalysis. , 2018, Angewandte Chemie.

[15]  Yihua Zhu,et al.  Spray-Assisted Coil-Globule Transition for Scalable Preparation of Water-Resistant CsPbBr3 @PMMA Perovskite Nanospheres with Application in Live Cell Imaging. , 2018, Small.

[16]  Yi Xie,et al.  Surface/Interfacial Engineering of Inorganic Low-Dimensional Electrode Materials for Electrocatalysis. , 2018, Accounts of chemical research.

[17]  W. Chu,et al.  Vibronic Superexchange in Double Perovskite Electrocatalyst for Efficient Electrocatalytic Oxygen Evolution. , 2018, Journal of the American Chemical Society.

[18]  P. Ajayan,et al.  Atomic Cobalt Covalently Engineered Interlayers for Superior Lithium‐Ion Storage , 2018, Advanced materials.

[19]  N. Vitale,et al.  Cyclophilin A enables specific HIV-1 Tat palmitoylation and accumulation in uninfected cells , 2018, Nature Communications.

[20]  Haijun Wu,et al.  Metal–organic framework-derived integrated nanoarrays for overall water splitting , 2018 .

[21]  S. Dou,et al.  Active-Site-Enriched Iron-Doped Nickel/Cobalt Hydroxide Nanosheets for Enhanced Oxygen Evolution Reaction , 2018 .

[22]  Yujie Sun,et al.  Innovative Strategies for Electrocatalytic Water Splitting. , 2018, Accounts of chemical research.

[23]  Shaojun Guo,et al.  Enhanced bifunctional fuel cell catalysis via Pd/PtCu core/shell nanoplates. , 2018, Chemical communications.

[24]  W. Chu,et al.  Oxygen Vacancies Confined in Nickel Molybdenum Oxide Porous Nanosheets for Promoted Electrocatalytic Urea Oxidation , 2018 .

[25]  Yixin Zhao,et al.  Highly Active IrOx Nanoparticles/Black Si Electrode for Efficient Water Splitting with Conformal TiO2 Interface Engineering , 2017 .

[26]  S. Qiao,et al.  S-NiFe2O4 ultra-small nanoparticle built nanosheets for efficient water splitting in alkaline and neutral pH , 2017 .

[27]  W. Chu,et al.  Enhanced Catalytic Activity in Nitrogen-Anion Modified Metallic Cobalt Disulfide Porous Nanowire Arrays for Hydrogen Evolution , 2017 .

[28]  Abdullah M. Asiri,et al.  Self‐Standing CoP Nanosheets Array: A Three‐Dimensional Bifunctional Catalyst Electrode for Overall Water Splitting in both Neutral and Alkaline Media , 2017 .

[29]  Xiaonian Li,et al.  Ir/C and Brφnsted acid functionalized ionic liquids: an efficient catalytic system for hydrogenation of nitrobenzene to p-aminophenol , 2017 .

[30]  Yi Xie,et al.  3D Nitrogen‐Anion‐Decorated Nickel Sulfides for Highly Efficient Overall Water Splitting , 2017, Advanced materials.

[31]  Xiangwei Zhu,et al.  Ternary NiCo2Px Nanowires as pH‐Universal Electrocatalysts for Highly Efficient Hydrogen Evolution Reaction , 2017, Advanced materials.

[32]  Quan Quan,et al.  Electrocatalysis for the oxygen evolution reaction: recent development and future perspectives. , 2017, Chemical Society reviews.

[33]  Hui Xie,et al.  Atomically Dispersed Iron-Nitrogen Species as Electrocatalysts for Bifunctional Oxygen Evolution and Reduction Reactions. , 2017, Angewandte Chemie.

[34]  Yanyong Wang,et al.  Porous cobalt-iron nitride nanowires as excellent bifunctional electrocatalysts for overall water splitting. , 2016, Chemical communications.

[35]  W. Chu,et al.  Phase‐Transformation Engineering in Cobalt Diselenide Realizing Enhanced Catalytic Activity for Hydrogen Evolution in an Alkaline Medium , 2016, Advanced materials.

[36]  A. Hirata,et al.  Versatile nanoporous bimetallic phosphides towards electrochemical water splitting , 2016 .

[37]  S. Karna,et al.  Laser induced MoS2/carbon hybrids for hydrogen evolution reaction catalysts , 2016 .

[38]  S. Qiao,et al.  Efficient and Stable Bifunctional Electrocatalysts Ni/NixMy (M = P, S) for Overall Water Splitting , 2016 .

[39]  Weijia Zhou,et al.  Metal Nickel Foam as an Efficient and Stable Electrode for Hydrogen Evolution Reaction in Acidic Electrolyte under Reasonable Overpotentials. , 2016, ACS applied materials & interfaces.

[40]  Yuhuan Zhang,et al.  Nickel sulfide microsphere film on Ni foam as an efficient bifunctional electrocatalyst for overall water splitting. , 2016, Chemical communications.

[41]  R. Schlögl,et al.  Molecular Insight in Structure and Activity of Highly Efficient, Low-Ir Ir-Ni Oxide Catalysts for Electrochemical Water Splitting (OER). , 2015, Journal of the American Chemical Society.

[42]  Yanguang Li,et al.  Recent advances in heterogeneous electrocatalysts for the hydrogen evolution reaction , 2015 .

[43]  Jun Chen,et al.  Hydrogenated Uniform Pt Clusters Supported on Porous CaMnO3 as a Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and Evolution , 2014, Advanced materials.

[44]  A. Bard,et al.  Dynamic potential–pH diagrams application to electrocatalysts for water oxidation , 2012 .