CNTs-supported noble metal-free high-entropy alloys heterostructure NiMoCoMnLa/CNTs@Ni for electrochemical hydrogen evolution reaction

Applied Surface Science, Год журнала: 2024, Номер 667, С. 160417 - 160417

Опубликована: Май 29, 2024

Язык: Английский

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Bimetallic site substitution of NiCoP nanoneedles as bifunctional electrocatalyst for boosted water splitting

Nano Research, Год журнала: 2024, Номер unknown

Опубликована: Авг. 31, 2024

Язык: Английский

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Trinary Support of Ni/NiO/C to Immobilize Ir Nanoclusters for Alkaline Hydrogen Oxidation

Dalton Transactions, Год журнала: 2024, Номер 53(6), С. 2762 - 2769

Опубликована: Янв. 1, 2024

Ir nanoclusters were immobilized on a trinary Ni/NiO/C support as new catalyst for alkaline hydrogen oxidation. The interplay between the and optimized binding energy, thus improving activity.

Язык: Английский

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Electrodeposition of Nickel–Molybdenum–Phosphide on Copper Foam Electrode for Efficient Hydrogen Evolution Reaction

Journal of Solid State Chemistry, Год журнала: 2024, Номер 339, С. 124958 - 124958

Опубликована: Авг. 12, 2024

Язык: Английский

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2LiBH₄-MgH₂ System Catalytically Modified with a 2D TiNb₂O₇ Nanoflake for High-Capacity, Fast-Response, and Long-Life Hydrogen Energy Storage

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(36), С. 47571 - 47580

Опубликована: Сен. 3, 2024

To achieve large-scale hydrogen storage for growing high energy density and long-life demands in end application, the 2LiBH4-MgH2 (LMBH) reactive hydride system attracts huge interest owing to its capacity thermodynamically favorable reversibility. The sluggish dehydrogenation kinetics unsatisfactory cycle life, however, remain two challenges. Herein, a bimetallic titanium-niobium oxide with two-dimensional nanoflake structure (2D TiNb2O7) is selected elaborately as an active precursor that situ transforms into TiB2 NbB2 ultrafine size good dispersion LMBH highly efficient catalysts, giving rise excellent kinetic properties long-term cycling stability. For added 5 wt% 2D TiNb2O7, 9.8 H2 can be released within 20 min at 400 °C, after which fully hydrogenated less than 350 °C 10 MPa H2. Moreover, of 9.4 maintained 50 cycles corresponding retention 96%, being highest reported date. positive roles recyclability are from their catalytic nucleation effects MgB2, main phase LMBH, thus reducing apparent activation energy, suppressing formation thermostable Li2B12H12 byproducts, inhibiting coarsening. This work develops advanced system, bringing hope high-capacity, fast-response, storage.

Язык: Английский

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A Polydopamine-Mediated Crystalline/Amorphous Ru-Ruo2/Ni(Oh)2 Composite Catalyst for High Current Density Hydrogen Evolution Reaction

Опубликована: Янв. 1, 2025

Язык: Английский

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Theoretical Investigation of Single-Atom Catalysts for Hydrogen Evolution Reaction Based on Two-Dimensional Tetragonal V2C2 and V3C3

Materials, Год журнала: 2025, Номер 18(5), С. 931 - 931

Опубликована: Фев. 20, 2025

Developing stable and effective catalysts for the hydrogen evolution reaction (HER) has been a long-standing pursuit. In this work, we propose series of single-atom (SACs) by importing transition-metal atoms into carbon vanadium vacancies tetragonal V2C2 V3C3 slabs, where refer to Ti, V, Cr, Mn, Fe, Co, Ni, Cu. By means first-principles computations, possibility applying these SACs in HER catalysis was investigated. All are conductive, which is favorable charge transfer during HER. The Gibbs free energy change (ΔGH*) adsorption adopted assess their catalytic ability. For V2C2-based with Cu located at vacancy, excellent performance achieved, |ΔGH*| smaller than 0.2 eV. Among V3C3-based SACs, apart from SAC Mn all can act as outstanding catalysts. According ΔGH*, V2C2- comparable best-known Pt-based However, it should be noted that slabs have not successfully synthesized laboratory, leading pure investigation without practical application work.

Язык: Английский

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Residual Stress Field Effect Induced on cathodic Electrodes for Alkaline Electrolysis

Heliyon, Год журнала: 2025, Номер 11(6), С. e42931 - e42931

Опубликована: Фев. 22, 2025

Язык: Английский

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Multiple Functional Engineering Strategies and Active Site Identification in Ru‐Based Electrocatalysts for Catalytic Conversion Reactions

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Electrochemical conversion has been regarded as an ideal technology for achieving clean and sustainable energy, showing significant promise in addressing the increasingly serious energy crisis environmental pollution. Ru-containing electrocatalysts (RUCE) outperform other precious metals due to elevated intrinsic activity superior cost-effectiveness, developing into a promising candidate electrochemical reactions. A challenge field of catalyst discovery lies its heavy reliance on empirical methods, rather than approaches that are rooted rational design principles. This review first concentrates catalytically active sites critical factors governing catalytic performance durability. Then, comprehensive summary multifunctional modification strategies ranging from nanoscale atomic scale is explored control structure improve performance. By unveiling roles each component modified RUCE at level, their identified discussed establish structure-performance relationship catalysts. Finally, challenges perspectives Ru-based materials hydrogen, oxygen, nitrogen reactions presented inspire further efforts toward understanding meet ever-growing demand future.

Язык: Английский

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A polydopamine-mediated crystalline/amorphous Ru-RuO2/Ni(OH)2 composite catalyst for high current density hydrogen evolution reaction

Molecular Catalysis, Год журнала: 2025, Номер 580, С. 115106 - 115106

Опубликована: Апрель 10, 2025

Язык: Английский

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