Ni Center Coordination Reconstructed Nanocorals for Efficient Water Splitting

Article Chemistry, Multidisciplinary

Modulating Interband Energy Separation of Boron-Doped Fe7S8/FeS2 Electrocatalysts to Boost Alkaline Hydrogen Evolution Reaction

Jing Wu et al.

Summary: The study introduces boron-doped Fe7S8/FeS2 electrocatalysts to optimize electronic structures, reduce water dissociation energy barrier, and enhance desorption efficiency of adsorbed hydrogen intermediates.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Unconventional direct synthesis of Ni3N/Ni with N-vacancies for efficient and stable hydrogen evolution

Doudou Zhang et al.

Summary: Transition metal nitrides, such as Ni3N/Ni enriched with N-vacancies, are promising catalyst materials with superior catalytic activity and stability. They demonstrate excellent performance in electrochemical and photoelectrochemical energy conversion applications, indicating a feasible synthesis approach for other transition metal nitride catalysts.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Engineering In-Plane Nickel Phosphide Heterointerfaces with Interfacial sp H-P Hybridization for Highly Efficient and Durable Hydrogen Evolution at 2 A cm-2

Qian Zhou et al.

Summary: This study introduces a novel strategy to integrate phosphorus-rich NiP2 and phosphorus-poor Ni5P4 into in-plane heterostructures, effectively enhancing the hydrogen-evolving activity of nickel phosphides by modulating their electronic structure and utilizing phosphorus atoms as active sites. The NiP2/Ni5P4 hybrid exhibits outstanding catalytic performance, surpassing most earth-abundant electrocatalysts and comparable to platinum catalysts in terms of hydrogen evolution efficiency.

SMALL (2022)

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Article Chemistry, Multidisciplinary

Reversing the Nucleophilicity of Active Sites in CoP2 Enables Exceptional Hydrogen Evolution Catalysis

Shuwen Niu et al.

Summary: This study develops an anion-deficient strategy to capture Ru single atoms on the anion vacancies of CoP2, achieving precise construction of catalytic sites. The prepared Ru-SA/Pv-CoP2 nanowires exhibit superior catalytic performance for the hydrogen evolution reaction (HER), with unprecedented overpotential and mass activity compared to the benchmark Pt/C catalyst. The introduction of Ru-SAs can reverse electron state distribution and enhance the activation of water molecules and hydrogen production.

SMALL (2022)

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Article Chemistry, Applied

Tailoring synergetic catalytic interface of VPO/Ni2P to boost hydrogen evolution under alkaline conditions

Wenli Xu et al.

Summary: A hierarchical (VO)(2)P2O7-Ni2P@NF (VPO-Ni2P@NF) hybrid catalyst was reported, showing outstanding performance for hydrogen evolution in alkaline media and potential for overall water splitting. The synergistic interfaces between VPO and Ni2P contribute to the efficient water dissociation and hydrogen recombination.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

Facile synthesis of MoP-Ru2P on porous N, P co-doped carbon for efficiently electrocatalytic hydrogen evolution reaction in full pH range

Yuxiao Gao et al.

Summary: The MoP-Ru2P/NPC electrocatalyst synthesized by a one-pot strategy exhibits porous nanostructures and shows low overpotentials in electrolytes of different pH values with remarkable stability. In 1 M KOH, this catalyst as the cathode and commercial NiFe foam as the anode achieves complete water-splitting for hydrogen generation with a low cell voltage requirement.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

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Article Engineering, Environmental

High-efficient and durable overall water splitting performance by interfacial engineering of Fe-doped urchin-like Ni2P/Ni3S2 heterostructure

Wei-Zhe Chen et al.

Summary: By utilizing interfacial engineering, a novel Fe-doped urchin-like Ni2P/Ni3S2 heterostructure with MOFs as precursor grown on nickel foam is successfully constructed, exhibiting abundant hetero-interfaces and carbon-coating. The electrode shows extremely high activity for oxygen evolution reaction and high activity for hydrogen evolution reaction due to the unique surface electronic structure and d-band center, with low overpotential in alkaline electrolyte. The design and construction strategy provides a new approach for overall water splitting.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Multidisciplinary

Decoupled Redox Catalytic Hydrogen Production with a Robust Electrolyte-Borne Electron and Proton Carrier

Feifei Zhang et al.

Summary: The study introduces a system that decouples the hydrogen and oxygen evolution reactions from the electrodes, utilizing distinct redox electrochemistry principles. By utilizing DHPS and ferricyanide-mediated reactions in two spatially separated catalyst bed reactors, the system achieves high efficiency and sustained hydrogen production.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

Tuning electrochemially driven surface transformation in atomically flat LaNiO3 thin films for enhanced water electrolysis

Christoph Baeumer et al.

Summary: The composition of LaNiO3 thin film surfaces dictates surface transformation and the activity of the oxygen evolution reaction, with Ni termination being significantly more active than La termination in the initial state. Active surface phases only develop for select as-synthesized surface terminations.

NATURE MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Water-Induced Formation of Ni2P-Ni12P5 Interfaces with Superior Electrocatalytic Activity toward Hydrogen Evolution Reaction

Zhongke Wang et al.

Summary: This study demonstrates the water-induced formation of Ni2P-Ni12P5 with excellent electrocatalytic hydrogen evolution reaction (HER) activity in alkaline condition, showing better durability than platinum and achieving superior overall water-splitting performance when combined with NiFe-layered double hydroxide (LDH) oxygen evolution reaction (OER) catalyst.

SMALL (2021)

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Article Chemistry, Physical

Modulating Interfacial Charge Density of NiP2-FeP2 via Coupling with Metallic Cu for Accelerating Alkaline Hydrogen Evolution

Ashwani Kumar et al.

Summary: This study successfully developed a NiP2-FeP2/Cu-NW/Cu-f catalyst with superior alkaline HER activity, surpassing the state-of-the-art Pt catalyst. The research also demonstrated that designing catalysts with rich interfaces can enhance the HER reaction.

ACS ENERGY LETTERS (2021)

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Article Chemistry, Multidisciplinary

A Durable and Efficient Electrocatalyst for Saline Water Splitting with Current Density Exceeding 2000 mA cm-2

Fengning Yang et al.

Summary: Water electrolysis is a promising method for industrial hydrogen production to achieve a sustainable and green hydrogen economy, but high technology costs limit market share. Developing efficient and economical electrocatalysts is crucial for cost reduction. Electrolysis in seawater electrolyte can further reduce feedstock costs.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Electrocatalytic Refinery for Sustainable Production of Fuels and Chemicals

Cheng Tang et al.

Summary: The emerging electrocatalytic refinery (e-refinery) is a more sustainable and environmentally friendly strategy for converting renewable feedstocks and energy sources into transportable fuels and chemicals. Challenges remain in understanding mechanistic aspects and materials design for complex reactions in e-refinery processes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Surface engineering induced hierarchical porous Ni12P5-Ni2P polymorphs catalyst for efficient wide pH hydrogen production

Jingtao Zhang et al.

Summary: A novel Ni12P5-Ni2P polymorphs catalyst was constructed with a unique hierarchical porous architecture, increasing the number of active sites and enhancing the intrinsic activity of the catalyst. Ni-P/Ni/NF showed low overpotentials for HER in alkaline, acidic, and neutral media, surpassing many reported state-of-the-art nonprecious HER catalysts, presenting a valuable route for designing and fabricating inexpensive and high-performance catalysts for electrocatalysis and beyond.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Multidisciplinary Sciences

Modulating electronic structure of metal-organic frameworks by introducing atomically dispersed Ru for efficient hydrogen evolution

Yamei Sun et al.

Summary: The research demonstrates the use of a single-atom strategy to construct high-performance electrocatalysts for hydrogen evolution reaction, showing excellent activity at all pH values and comparable performance to commercial Pt/C. Introducing single ruthenium atoms into metal-organic frameworks leads to improved binding strength for H2O and H*, enhancing HER performance.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Efficient overall water splitting in acid with anisotropic metal nanosheets

Dongshuang Wu et al.

Summary: The researchers have developed an optimized catalyst RuIr-NC for oxygen evolution reaction, which demonstrates high efficiency and stability in the process of water splitting.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

A highly efficient atomically thin curved PdIr bimetallene electrocatalyst

Fan Lv et al.

Summary: The study introduces a new synthetic method for creating an atomic-level PdIr bimetallene with an average thickness of around 1.0 nm, which demonstrates superior catalytic performance in the hydrogen evolution reaction and the formic acid oxidation reaction.

NATIONAL SCIENCE REVIEW (2021)

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Article Chemistry, Physical

Nickel single atom-decorated carbon nanosheets as multifunctional electrocatalyst supports toward efficient alkaline hydrogen evolution

Peng Li et al.

Summary: In this study, Ni single atom-decorated carbon nanosheets were developed as multifunctional supports for engineering heterostructured electrocatalysts towards hydrogen evolution in alkaline media. The Ni single atoms were found to cleave H-OH bonds actively and facilitate Had spillover to metallic Pt sites. Additionally, a Pt/PtOx configuration was generated at the heterointerface via Pt-O-C (Ni) interfacial bonding, with oxidized Pt species located at the interface and metallic Pt formed in the near-interface area.

NANO ENERGY (2021)

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Article Chemistry, Multidisciplinary

Heterogeneous Bimetallic Mo-NiPx/NiSy as a Highly Efficient Electrocatalyst for Robust Overall Water Splitting

Jin Wang et al.

Summary: The Mo-NiPx/NiSy electrode exhibits low overpotentials and high activity in both hydrogen evolution and oxygen evolution reactions, demonstrating remarkable full water splitting performance comparable to commercial electrolysis.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Synergetic Metal Defect and Surface Chemical Reconstruction into NiCo2S4/ZnS Heterojunction to Achieve Outstanding Oxygen Evolution Performance

Jing Sun et al.

Summary: Defect and interface engineering are effective strategies to improve the activity of metal sulfides, but the practical application is limited by low conductivity and volume fluctuation. By anchoring Zn-defective ZnS nanoparticles on the surface of NiCo2S4 nanosheets, the NiCo2S4/ZnS hybrids exhibit outstanding oxygen evolution performance with an ultra-low overpotential of 140 mV. The anchored ZnS nanoparticles inhibit volume expansion of NiCo2S4 nanosheets during cycling.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Hierarchical Ni-Mo2C/N-doped carbon Mott-Schottky array for water electrolysis

Zhixiao Xu et al.

Summary: The study successfully developed a facile method to synthesize nickel-molybdenum carbide/carbon composite electrodes with high activity and durability for hydrogen and oxygen generation reactions in water electrolyzers. The electrodes showed significantly low overpotential and excellent stability, outperforming noble metals in water electrolysis. This structural design also holds potential for industrial applications.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Multidisciplinary

Synergistic Effect of Platinum Single Atoms and Nanoclusters Boosting Electrocatalytic Hydrogen Evolution

Yihui Zhu et al.

Summary: By computational studies, atomic step-rich Pt clusters and defective graphene (DG)-loaded Pt SAs are found to be beneficial for water dissociation and hydrogen coupling, respectively. The structure that integrates both Pt SAs and nanoclusters onto the DG matrix (PtSA/NC-DG) is predicted to exhibit decent activity and high atomic utilization for alkaline HER electrocatalysis.

CCS CHEMISTRY (2021)

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Article Multidisciplinary Sciences

IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2Acm-2 in acidic media

Rui Li et al.

Summary: This study presents a support-stabilized catalyst for proton exchange membrane electrolyzers, which balances high activity and stability in oxygen evolution reaction. By altering the charge distribution and size of surface clusters, the catalyst achieves both stability and high activity.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Energy-saving hydrogen production by chlorine-free hybrid seawater splitting coupling hydrazine degradation

Fu Sun et al.

Summary: A potential solution to grid-scale production of carbon-neutral hydrogen energy without reliance on freshwater is demonstrated through chlorine-free hydrogen production by hybrid seawater splitting coupling hydrazine degradation. The electrolyzer achieves a high hydrogen production rate at low electricity expense and avoids chlorine electrochemistry in complex chemical environments. By integrating low-voltage direct hydrazine fuel cells or solar cells, self-powered hybrid seawater electrolysis is realized, enabling efficient conversion of ocean resources to hydrogen fuel while removing harmful pollutants.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Ce-Modified Ni(OH)2 Nanoflowers Supported on NiSe2 Octahedra Nanoparticles as High-Efficient Oxygen Evolution Electrocatalyst

Shi Feng Zai et al.

Summary: A high-efficiency electrocatalyst for the oxygen evolution reaction (OER) has been designed and fabricated, showing remarkable activity with very low overpotential and Tafel slope, surpassing almost all OER electrocatalysts.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Dual-coupling ultrasmall iron-Ni2P into P-doped porous carbon sheets assembled CuxS nanobrush arrays for overall water splitting

Duy Thanh Tran et al.

Summary: A novel electrocatalyst was designed with dual-coupling iron and Ni2P for efficient overall water splitting, showing superior catalytic activities for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The synergistic effects between iron and ultrasmall Ni2P nanoparticles contributed significantly to the low required overpotential for achieving high current densities. The proposed Fe-Ni2P@PC/CuxS material exhibited excellent performance in electrolyzer cell, surpassing recently reported ones with a smaller cell voltage at high current responses.

NANO ENERGY (2021)

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Article Chemistry, Multidisciplinary

Electrocatalytic water splitting with unprecedentedly low overpotentials by nickel sulfide nanowires stuffed into carbon nitride scabbards

Zaki N. Zahran et al.

Summary: This study reports the unprecedentedly low overpotential achieved for oxygen evolution during water electrolysis using a unique catalyst, NiSx/C3N4, providing a new direction for developing efficient catalysts for oxygen evolution.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Local spin-state tuning of cobalt-iron selenide nanoframes for the boosted oxygen evolution

Jun-Ye Zhang et al.

Summary: The study introduces cobalt-iron selenide nanoframes as a highly efficient electrocatalyst for water oxidation, achieving a low overpotential and outperforming most cobalt-based catalysts and even benchmarked commercial ruthenium oxides. Iron doping regulates the local spin state of cobalt species, accelerating charge transfer and formation of oxygenated intermediates, ultimately leading to enhanced oxygen evolution efficiency. This work may pioneer a promising approach in energy conversion technologies by tuning the local electronic structure to improve electrocatalysis activities.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Nanoscience & Nanotechnology