Electronic modulation of cobalt-molybdenum oxide via Te doping embedded in a carbon matrix for superior overall water splitting

Review Chemistry, Multidisciplinary

On the Durability of Iridium-Based Electrocatalysts toward the Oxygen Evolution Reaction under Acid Environment

Liaona She et al.

Summary: This review summarizes the recent research progress on tackling the stability issues of Ir-based OER electrocatalysts in acid media, aiming to provide inspiration for designing highly active and stable Ir-based electrocatalysts.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

1D Nanowire Heterojunction Electrocatalysts of MnCo2O4/GDY for Efficient Overall Water Splitting

Lu Qi et al.

Summary: The rational design and synthesis of non-precious metal-based electrocatalysts are crucial for efficient overall water splitting (OWS) in an integrated electrolyzer for hydrogen energy development. The nanowire-structured heterogenous MnCo2O4/graphdiyne arrays show improved electric conductivity, mass/ion transport, gas emissions, and exposure of active sites, leading to enhanced catalytic activity and long-term stability. The alkaline water electrolyzer assembled with NW-MnCo2O4/GDY demonstrates high performance with lower voltage requirements compared to previously reported electrocatalysts.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

In Situ Electronic Redistribution Tuning of NiCo2S4 Nanosheets for Enhanced Electrocatalysis

Hui Su et al.

Summary: Metal Ru and vacancy engineering are used to enhance the activity of NiCo2S4 electrocatalysts for both oxygen evolution and hydrogen evolution reactions. Decorated with Ru single atoms and nanoclusters, the electrocatalysts exhibit significantly improved OER and HER performance, outperforming most reported materials in overall water splitting. Bader charge analysis reveals the promotion of electron interactions, contributing to the enhanced electrochemical performance.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Engineering, Environmental

Strongly coupled N-doped graphene quantum dots/Ni(Fe)OxHy electrocatalysts with accelerated reaction kinetics for water oxidation

Wanjun Chang et al.

Summary: Hybridizing metal hydroxides with conductive carbon materials can improve electron transfer and kinetics of oxygen evolution reaction. A novel electrocatalyst was developed with nitrogen-doped graphene quantum dots anchored on metal nanosheets, demonstrating improved reaction kinetics and stability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Multidisciplinary

Crystalline-Amorphous Ni2P4O12/NiMoOx Nanoarrays for Alkaline Water Electrolysis: Enhanced Catalytic Activity via In Situ Surface Reconstruction

Jing Wang et al.

Summary: This article reports an efficient bifunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solution. The catalyst exhibits good performance at both low and overpotentials, and demonstrates outstanding long-term durability. Spectroscopic studies reveal the importance of in situ surface reconstruction for the enhanced catalytic activity in both HER and OER processes.

SMALL (2022)

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Article Chemistry, Physical

Fe Coordination Environment, Fe-Incorporated Ni(OH)2 Phase, and Metallic Core Are Key Structural Components to Active and Stable Nanoparticle Catalysts for the Oxygen Evolution Reaction

Prashant Acharya et al.

Summary: This study investigates the chemical structure changes of two different nanoparticle FeNiO(H)(x) catalysts synthesized through different routes under OER environment. The results show that voltage has an impact on the oxidation state of Ni, transforming it from +2 to +3/+4. The study on the coordination environment of Fe reveals that voltage has minimal effect on its oxidation state, but different synthesis routes of nanoparticles lead to different changes. By comparing the catalysts synthesized through different routes, it is found that NP-aq exhibits better activity and stability.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

NiFe Layered Double Hydroxides Grown on a Corrosion-Cell Cathode for Oxygen Evolution Electrocatalysis

Wei Zhao et al.

Summary: This study elucidates the growth mechanism of NiFe-LDH@IF, optimizes corrosion conditions, and improves electrocatalytic performance, providing guidance for the preparation of self-supported LDH for hydrogen production.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

Ultrafine ruthenium-iridium-tellurium nanotubes for boosting overall water splitting in acidic media

Min Liu et al.

Summary: A ternary RuIrTe nanotubes were synthesized by a replacement reaction with Te nanowires, showing high catalytic activity for overall water splitting in acidic electrolytes. The rational combination of composition and morphology engineering provides a feasible method to optimize the performance of electrocatalysts for overall water splitting in acidic media.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Physical

Self-supported tremella-like MoS2-AB particles on nickel foam as bifunctional electrocatalysts for overall water splitting

Lingyun Guo et al.

Summary: This study successfully prepared a novel bifunctional electrode material for electrolytic water splitting, with low cost and high activity, which can achieve efficient water electrolysis in alkaline media. The electrode exhibited excellent stability and catalytic performance, providing a new design concept for efficient water splitting reactions.

NANO ENERGY (2022)

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Article Chemistry, Physical

Vanadium-phosphorus incorporation induced interfacial modification on cobalt catalyst and its super electrocatalysis for water splitting in alkaline media

Zizheng Zhu et al.

Summary: Researchers have reported a Co-VOx-P nanoflower electrocatalyst with excellent catalytic performance for water splitting. Experimental and theoretical studies suggest that the catalyst has enhanced conductivity, facile electron transfer, and favorable surface adsorption strength.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

Interfacing Co3Mo with CoMoOx for synergistically boosting electrocatalytic hydrogen and oxygen evolution reactions

Yu Liu et al.

Summary: This study develops an integrated electrode with abundant and strong coupling interfaces between Co3Mo nanoalloys and porous CoO/Co2Mo3O8 hybrid nanosheets (Co3Mo/CoMoOx), which shows promising HER and OER performance due to enhanced conductivity and accelerated charge transfer.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Lattice-Matching Formed Mesoporous Transition Metal Oxide Heterostructures Advance Water Splitting by Active Fe-O-Cu Bridges

Feng Hu et al.

Summary: This study reports a simple method to synthesize efficient bifunctional electrocatalysts that exhibit high catalytic activity and stability in alkaline oxygen/hydrogen evolution reactions. The catalysts have been designed and fabricated with an optimized structure and nanoporous morphology, resulting in low overpotential and high current density.

ADVANCED ENERGY MATERIALS (2022)

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Article Engineering, Environmental

Simultaneous electrical and defect engineering of nickel iron metal-organic-framework via co-doping of metalloid and non-metal elements for a highly efficient oxygen evolution reaction

Keemin Park et al.

Summary: In this study, a 2D morphological NiFe MOF electrocatalyst co-doped with metalloid and non-metal elements was reported for enhanced OER performances. The synergistic effect of metalloid (Te) and halogen (Cl) doping improved OER kinetics, reducing overpotential and increasing long-term stability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Electrochemistry

Methanol electro-oxidation to formate on iron-substituted lanthanum cobaltite perovskite oxides

Fanxu Meng et al.

Summary: The study investigates formate production from methanol electro-oxidation catalyzed by iron-substituted lanthanum cobaltite. The Fe/Co ratio in the oxides significantly affects the activity and selectivity, with LaCo0.5Fe0.5O3 showing the highest formate production rate.

ESCIENCE (2022)

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Article Electrochemistry

A first-principles study on the electrochemical reaction activity of 3d transition metal single-atom catalysts in nitrogen-doped graphene: Trends and hints

Caiyan Zheng et al.

Summary: This study systematically investigates the activity of 3d transition metal embedded nitrogen-doped graphene as single-atom catalysts in the ORR, OER, and HER, and identifies the optimal catalyst configuration for each reaction. Analysis based on machine learning method reveals several key factors that influence catalytic performance.

ESCIENCE (2022)

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Review Materials Science, Multidisciplinary

Recent Progress of Electrospun Nanofibers for Zinc-Air Batteries

Yanan Hao et al.

Summary: Zinc-air batteries are attracting attention in the field of energy conversion and storage due to their high energy density and eco-friendliness. However, the slow kinetics of oxygen reduction and oxygen evolution reactions hinder their commercial development, emphasizing the importance of developing efficient, low-cost, and non-noble metal bifunctional catalysts. Electrospun one-dimensional nanofibers with unique properties show promising applications in energy storage devices, particularly in ZABs, by providing more active sites, shortening diffusion pathways, and improving kinetics.

ADVANCED FIBER MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Compensating Electronic Effect Enables Fast Site-to-Site Electron Transfer over Ultrathin RuMn Nanosheet Branches toward Highly Electroactive and Stable Water Splitting

Leigang Li et al.

Summary: Heteroatom doping and two-dimensional nanostructure design have been demonstrated as effective strategies for improving the electroactivity and stability of electrocatalysts. Mn-doped ultrathin Ru nanosheet branches (RuMn NSBs) exhibit bifunctionalities of hydrogen evolution reaction and oxygen evolution reaction with high electroactivity and durability. The shortened Ru-O bonds and flexible modulation on the valence states of Ru sites by the introduction of Mn are key factors that lead to improved electrochemical performances.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Anodic Oxidation Enabled Cation Leaching for Promoting Surface Reconstruction in Water Oxidation

Yan Duan et al.

Summary: A rational design for oxygen evolution reaction (OER) catalysts is important for water electrolysis efficiency. This study demonstrates controlled anodic leaching of Cr in CoCr2O4 material to transform inactive spinel CoCr2O4 into a highly active catalyst, showcasing the significance of controlling anodic potential in modifying electrocatalyst surface chemistry.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Engineering, Environmental

Fe doped Mo/Te nanorods with improved stability for oxygen evolution reaction

Runze He et al.

Summary: The high valence state of Mo is active but unstable for water oxidation. By doping Fe into Mo/Te, the stability of the catalyst can be greatly improved, leading to more stable and efficient performance in the oxygen evolution reaction. This study demonstrates an effective approach to enhance the activity and stability of Mo-based catalysts for OER through Fe and Mo synergistic effects.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Engineering, Environmental

In-situ formation of Co1-xS hollow polyhedrons anchored on multichannel carbon nanofibers as self-supporting anode for lithium/sodium-ion batteries

Xintong Lian et al.

Summary: A reliable synthetic approach was reported for the in-situ growth of Co-based ZIF-67 on electrospun nanofibers, followed by carbonization and sulfurization to form Co1-xS hollow polyhedrons anchored on multichannel carbon nanofibers (Co1-xS/MCF) for LIBs and SIBs. The resulting binder-free Co1-xS/MCF anode demonstrated advanced electrochemical properties for both LIBs and SIBs, attributed to the unique multichannel nanostructure and Co1-xS hollow polyhedrons providing active sites and reducing structural strain.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Formation of FeOOH Nanosheets Induces Substitutional Doping of CeO2-x with High-Valence Ni for Efficient Water Oxidation

Jun Yu et al.

Summary: This study reports a one-step synthesis of high-valence nickel-doped CeO2-x covered with FeOOH nanosheets in the presence of Ni2+/Fe3+, leading to efficient oxygen evolution reaction (OER) electrocatalysis. The etching effect on ceria by H+ species from the hydrolysis of Fe3+ was revealed through a series of experiments, promoting the formation of high-valence Ni3+/Ni4+.

ADVANCED ENERGY MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Tellurium Triggered Formation of Te/Fe-NiOOH Nanocubes as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Shumaila Ibraheem et al.

Summary: In this study, Te-modulated FeNiOOH nanocubes were fabricated as bifunctional electrocatalysts for oxygen and hydrogen evolution reactions. The catalyst exhibited excellent OER and HER activity, leading to high-performance alkaline water electrolysis. This strategy opens up a new pathway for the design and advancement of tellurium-doped nanomaterials for various applications.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Sub-2 nm Thiophosphate Nanosheets with Heteroatom Doping for Enhanced Oxygen Electrocatalysis

Junnan Song et al.

Summary: In this study, anion-regulated sub-2 nm ultrathin thiophosphate nanosheets were designed and synthesized as bifunctional oxygen evolution/reduction reaction electrocatalysts for Zn-air batteries. The incorporation of Se dopants expanded crystal plane spacing, generated a partially disordered structure, and regulated electronic structures of active sites. Density functional theory calculations showed reduced overpotential and a shortened energy bandgap, enhancing reaction kinetics and conductivity for efficient electrocatalysis in metal-air battery technologies.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Corrosion Engineering on Iron Foam toward Efficiently Electrocatalytic Overall Water Splitting Powered by Sustainable Energy

Zexing Wu et al.

Summary: This work presents a facile and industrially compatible corrosion strategy for the rapid synthesis of amorphous RuO2-decorated FeOOH nanosheets. The FF-Na-Ru electrode is superhydrophilic and aerophobic, ensuring intimate contact with the electrolyte and facilitating the escape of gas bubbles during the electrocatalytic process. Strong electronic interactions between RuO2 and FeOOH dramatically improve the electrochemical interfacial properties, leading to excellent catalytic activity towards the hydrogen evolution reaction and overall water-splitting.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

RuCoOx Nanofoam as a High-Performance Trifunctional Electrocatalyst for Rechargeable Zinc-Air Batteries and Water Splitting

Chenhui Zhou et al.

Summary: Highly efficient and durable trifunctional electrocatalyst RuCoOx, prepared by a unique one-pot approach, exhibits outstanding performance in ORR/OER/HER with small potential difference and low HER overpotential. Its use in liquid rechargeable Zn-air batteries and water splitting electrolyzer demonstrates high efficiency and durability even at large current density.

NANO LETTERS (2021)

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Article Chemistry, Multidisciplinary

Highly Effective Freshwater and Seawater Electrolysis Enabled by Atomic Rh-Modulated Co-CoO Lateral Heterostructures

Phan Khanh Linh Tran et al.

Summary: Atomic metal-modulated heterostructures, such as continuous cobalt-cobalt oxide lateral heterostructures implanted with well-dispersed rhodium atoms, have shown promise in developing high-performance multifunctional electrocatalysts for water splitting. The synergistic effects of uniform rhodium atoms and Co-CoO heterostructures provide rich multi-integrated active sites and excellent charge transfer, ultimately enhancing both hydrogen and oxygen evolution activities. In both freshwater and seawater conditions, the material displays superior overpotentials and cell voltages compared to earlier reported catalysts, making it a promising catalyst for green hydrogen generation via electrolysis applications.

SMALL (2021)

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Article Chemistry, Physical

Late Transition Metal Doped MXenes Showing Superb Bifunctional Electrocatalytic Activities for Water Splitting via Distinctive Mechanistic Pathways

Rohit Anand et al.

Summary: In this study, it is demonstrated that late transition metal doping can significantly enhance the HER/OER activities of MXenes. By embedding a single Ni or Co atom into MXenes, it provides a suitable amount of electrons for optimal adsorbate evolving mechanism, resulting in activated lattice oxygen mechanism. The stability and bifunctional catalytic capability of MXene combinations towards both HER and OER are shown.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Regulation of Morphology and Electronic Structure of FeCoNi Layered Double Hydroxides for Highly Active and Stable Water Oxidization Catalysts

Xiao Zhang et al.

Summary: This study successfully prepared FeCoNi-LDHs with high activity and stability for the oxygen evolution reaction (OER) using a simple room-temperature-stirring strategy. The material features hollow structure and assembly of ultrathin layered nanosheets, showing significantly improved activity and stability compared to IrO2.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Boron nanosheets induced microstructure and charge transfer tailoring in carbon nanofibrous mats towards highly efficient water splitting

Hongling Li et al.

Summary: This study presents a facile and scalable approach to fabricate self-supporting boron carbon oxynitride nanofibrous (BCNONF) mats with outstanding OER and HER performance in alkaline electrolyte, showing bifunctional characteristics. The BCNONF mats exhibit superior activities and long-term stability in overall water splitting as anode and cathode of an electrolyzer, with reduced O atom adsorption and stronger H* adsorption on the BCNO surface facilitating efficient charge transfer.

NANO ENERGY (2021)

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Article Chemistry, Physical

Theoretical Insight on Anion Ordering, Strain, and Doping Engineering of the Oxygen Evolution Reaction in BaTaO2N

Zhenyun Lan et al.

Summary: The study showed that by applying strain and cationic doping of Ca and Sr, it is possible to optimize the theoretical overpotential of the oxygen evolution reaction (OER), leading to improved electrocatalytic reactions.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Physical

In-situ reconstructed Ru atom array on α-MnO2 with enhanced performance for acidic water oxidation

Chao Lin et al.

Summary: The use of Ru/MnO2 electrocatalyst has shown high activity and outstanding stability for the oxygen evolution reaction, confirming a mechanism involving only *O and *OH intermediates, with excellent overall performance.

NATURE CATALYSIS (2021)

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Article Chemistry, Physical

Phase-Controllable Growth NixPy Modified CdS@Ni3S2 Electrodes for Efficient Electrocatalytic and Enhanced Photoassisted Electrocatalytic Overall Water Splitting

Qianwen Dong et al.

Summary: The study proposed a phase-controllable phosphating strategy to prepare Ni3P modified CdS@Ni3S2 heterojunction electrocatalysts, which exhibited remarkable activities in both HER and OER; DFT results suggest that P-Ni sites and P sites in CdS@Ni3S2/Ni3P serve as OER and HER active sites during water splitting; CdS@Ni3S2/Ni3P shows superior photoassisted electrocatalytic water splitting performance.

SMALL METHODS (2021)

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Article Chemistry, Physical

Acidic Media Regulated Hierarchical Cobalt Compounds with Phosphorous Doping as Water Splitting Electrocatalysts

Danna Song et al.

Summary: A facile acid-etching strategy was used to synthesize complex nanostructured transition metal compounds with tunable composition and morphology, showing bifunctional electrocatalytic capability towards the oxygen evolution and hydrogen evolution reactions. The introduction of phosphorous dopant significantly boosts catalytic activity, especially in the hydrogen evolution reaction.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Lattice-Confined Ir Clusters on Pd Nanosheets with Charge Redistribution for the Hydrogen Oxidation Reaction under Alkaline Conditions

Baohua Zhang et al.

Summary: A heterostructured Ir@Pd electrocatalyst with ultrasmall Ir nanoclusters epitaxially confined on Pd nanosheets is reported for catalyzing the sluggish alkaline HOR. The unique structure shows an optimal balance between hydrogen and hydroxyl adsorption, resulting in impressive HOR activity with negligible degradation. The electron transfer and formation of Ir/IrO2 Janus nanostructures play crucial roles in optimizing the activity of the catalyst.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Nitrogen-Doped Cobalt Diselenide with Cubic Phase Maintained for Enhanced Alkaline Hydrogen Evolution

Yiqiang Sun et al.

Summary: Incorporating nitrogen can effectively regulate the intrinsic electronic structure of transition metal chalcogenides, promoting their electrocatalytic activity for the hydrogen evolution reaction; while the introduction of phosphorous can lead to structural phase transition and instability in the structural phase of phosphorous-doped cobalt selenide for the hydrogen evolution reaction.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Electronic Modulation Caused by Interfacial Ni-O-M (M=Ru, Ir, Pd) Bonding for Accelerating Hydrogen Evolution Kinetics

Liming Deng et al.

Summary: Designing a well-defined metal-support interfacial bond is an effective strategy to optimize the intrinsic activity of noble metals, but it is also challenging. The developed quantum-sized metal nanoparticles anchored on nickel metal-organic framework nanohybrids demonstrate excellent hydrogen evolution reaction (HER) activity at all pH values, surpassing even commercial Pt/C and recent noble-metal catalysts. The interfacial-bond-induced electron redistribution plays a crucial role in enhancing the reaction kinetics and overall performance of the hybrids.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Cr-Doped CoP Nanorod Arrays as High-Performance Hydrogen Evolution Reaction Catalysts at High Current Density

Lipeng Zhang et al.

Summary: The Cr-doped CoP nanorod arrays on carbon cloth (Cr-CoP-NR/CC) exhibited superior performance as HER catalysts with high stability and efficiency at high current densities, indicating great potential to replace costly Pt-based HER catalysts in water electrolyzers.

SMALL (2021)

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Article Chemistry, Multidisciplinary

Metallic S-CoTe with Surface Reconstruction Activated by Electrochemical Oxidation for Oxygen Evolution Catalysis

Lei Yang et al.

Summary: The study focuses on sulfur-doped nanorod cobalt telluride grown on carbon cloth for catalyzing OER, showing extraordinary catalytic activity. Sulfur doping can tailor the electronic structure of active species and optimize free energy, accelerating OER kinetics.

SMALL (2021)

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Article Chemistry, Physical

Incorporating ultra-small N-doped Mo2C nanoparticles onto 3D N-doped flower-like carbon nanospheres for robust electrocatalytic hydrogen evolution

Huifang Wei et al.

Summary: This study successfully synthesized nitrogen-doped molybdenum carbide nanoparticles and anchored them onto nitrogen-doped flower-like carbon nanospheres to form N-Mo2C/NFCNS composites as efficient hydrogen evolution reaction (HER) electrocatalysts. The composites exhibited impressive HER activities with low overpotential and excellent durability in both acidic and alkaline media.

NANO ENERGY (2021)

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Article Chemistry, Multidisciplinary

Highly Efficient Oxygen Evolution Reaction Enabled by Phosphorus Doping of the Fe Electronic Structure in Iron-Nickel Selenide Nanosheets

Yuan Huang et al.

Summary: The authors reported a facile approach to independently regulate the electronic structure of Fe in Ni0.75Fe0.25Se2 by P doping, resulting in an electrode with superior catalytic performance for the oxygen evolution reaction. The new strategy presented in this work allows for rational design of efficient electrocatalysts for OER.

ADVANCED SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Uniform W-NiCoP microneedles by molten salt decomposition as bifunctional electrocatalyst for alkaline water splitting

Xin-Tong Yan et al.

Summary: In this study, W-NiCoP/NF electrocatalyst was successfully prepared by molten salt decomposition method, showing excellent alkaline HER performance. The catalyst possesses uniform distribution and uniform needle arrays, which are also beneficial for interaction with W elements.

APPLIED MATERIALS TODAY (2021)

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Article Chemistry, Physical

Hierarchical microsphere MOF arrays with ultralow Ir doping for efficient hydrogen evolution coupled with hydrazine oxidation in seawater

Xuejun Zhai et al.

Summary: This study presents a cost-efficient approach for the fabrication of metal-doped MOFs for energy-saving water/seawater electrocatalysis. By rational design of efficient catalysts, the research achieved efficient water splitting at ultra-low voltages in seawater electrolysis.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Interfacial electronic coupling of ultrathin transition-metal hydroxide nanosheets with layered MXenes as a new prototype for platinum-like hydrogen evolution

Linlin Li et al.

Summary: Metal hydroxides@MXene hybrids were introduced as efficient electrocatalysts for the alkaline HER, showing Pt-like catalytic activity and excellent stability. The interfacial electronic coupling between transition-metal hydroxides and MXene nanosheets plays a crucial role in optimizing the adsorption energy of water and hydrogen. This study highlights the great potential of interfacial electronic coupling in developing advanced electrocatalysts for applications in energy-related fields.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Electrochemistry

Ni2P/NiMoP heterostructure as a bifunctional electrocatalyst for energy-saving hydrogen production

Tongzhou Wang et al.

Summary: An effective approach is introduced in this study to replace the anodic oxygen evolution reaction with a urea oxidation reaction, significantly decreasing the cell voltage for hydrogen production. The Ni2P/NiMoP catalyst shows impressive activity for both hydrogen evolution and oxygen evolution during hydrogen production. The introduction of urea results in a significant reduction in oxidation voltage, and the two-electrode electrolyzer with Ni2P/NiMoP catalyst exhibits excellent long-term durability.

ESCIENCE (2021)

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Article Chemistry, Physical

Coupling porous Ni doped LaFeO3 nanoparticles with amorphous FeOOH nanosheets yields an interfacial electrocatalyst for electrocatalytic oxygen evolution

Yanxin Li et al.

Summary: A novel hybrid OER electrocatalyst consisting of Ni-doped LaFeO3 with a porous structure combined with ultra-thin amorphous FeOOH nanosheets has been successfully prepared, showing extremely low overpotential and high OER activity.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

Partially reduced Ru/RuO2 composites as efficient and pH-universal electrocatalysts for hydrogen evolution

Yanliu Dang et al.

Summary: Efficient Ru/RuO2 composites were found to exhibit high HER activity under non-acidic conditions, achieved through a simple strategy, making them suitable for alkaline solutions and even seawater, showcasing industrial prospects.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Physical

Construction of hierarchical IrTe nanotubes with assembled nanosheets for overall water splitting electrocatalysis

Ziqiang Wang et al.

Summary: Hierarchical IrTe nanotubes (NTs) with assembled nanosheets were prepared through a replacement reaction between Te nanowires and metal precursors in the presence of formic acid, serving as a bifunctional electrocatalyst for effective oxygen and hydrogen evolution reactions in acidic media. The IrTe NTs exhibited high-efficiency performance towards electrocatalytic overall water splitting in 0.5 M H2SO4 solution, reaching 10 mA cm(-2) at a cell voltage of only 1.53 V, showcasing a powerful approach to fabricate active bifunctional electrocatalysts for overall water splitting.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary

In situ identification of the electrocatalytic water oxidation behavior of a nickel-based metal-organic framework nanoarray

Fanpeng Cheng et al.

Summary: The Ce-NiBDC/OG exhibited a low overpotential for the OER, with in situ spectroscopy and operando microscopy revealing the phase transformation behavior to Ce-doped NiOOH as the active site. Ce species doping in NiOOH was found to significantly enhance *OH adsorption and reduce the energy barriers for the rate-determining step (*OH -> *O) in the Ce-NiBDC/OG-derived catalyst.

MATERIALS HORIZONS (2021)

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Article Multidisciplinary Sciences