Nanosheet-based 3-dimentional assembly with synergitic Co-Mo sites for effective electrocatalytic hydrogen evolution reaction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161490 - 161490

Published: March 1, 2025

Language: Английский

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Layered‐Hierarchical Dual‐Lattice Strain Suppresses Ni_xSe Surface Reconstruction for Stable OER in Alkaline Fresh/Seawater Splitting

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract Transition metal selenides (TMSe) are promising oxygen evolution reaction (OER) electrocatalysts but act as precursors rather than the actual active phase, transforming into amorphous oxyhydroxides during OER. This transformation, along with formation of selenium oxyanions and unstable heterointerfaces, complicates structure‐activity relationship reduces stability. work introduces novel “layered‐hierarchical dual lattice strain engineering” to inhibit surface reconstruction Ni x Se by modulating both nickel foam (NF) substrate Mo 2 N nanosheets (NM) nanorods‐nanosheets catalytic layer (NiSe‐Ni 0.85 Se‐NiO, NSN) ultrafast interfacial bimetallic NiFeOOH coating, achieving optimized NM/NSN/NiFeOOH configuration. The NM induces strain, enhancing OER activity improving electron transport adhesion, while coating additional mitigating oxidative degradation, reinforcing structural integrity. catalyst demonstrates exceptional performance low overpotentials 208 mV@10 mA cm −2 outstanding stability over 100 h at in alkaline freshwater seawater. Theoretical analysis shows that effectively prevents degradation preserving sites for optimal intermediate interactions stabilizing electronic environment. provides a strategy TMSe beyond.

Language: Английский

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A multifunctional PANI-wrapped Bi2WO6 2D-nanoplates with in-situ grown BiOCl nanocomposite for electrochemical seawater splitting, supercapacitor, and photocatalytic applications

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162979 - 162979

Published: March 1, 2025

Language: Английский

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Self-activated oxophilic surface of porous molybdenum carbide nanosheets promotes hydrogen evolution activity in alkaline environment

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137423 - 137423

Published: March 1, 2025

Molybdenum carbides are promising alternatives to Pt-based catalysts for the hydrogen evolution reaction (HER) due their similar d-band electronic configuration. Notably, MoxC exhibits superior HER kinetics in alkaline media compared acidic conditions, contrasting with catalysts. Herein, we present 3D porous β-Mo2C nanosheets, achieving an overpotential of 111 mV at 10 mA cm-2 1 M KOH, significantly lower than environments. Simulations on pristine Mo2C surface reveal that water dissociation poses a higher energy barrier media, suggesting crystal structure alone does not dictate kinetics. Operando attenuated total reflection surface-enhanced infrared absorption spectroscopy shows activates interfacial water, generating liquid-like and free facilitates hydroxyl species adsorption, reducing activation below 38.43 ± 0.19 kJ/mol. Our findings self-activation effect offer insights into mechanism Mo-based electrocatalysts guide design highly active

Language: Английский

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Hierarchical assembly of NiMoO4/Mo3Se4/Ni3Se2 in situ grown on nickel foam as a highly efficient and durable electrocatalyst for alkaline hydrogen evolution reaction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162340 - 162340

Published: April 1, 2025

Language: Английский

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Ru atom-doped MoO2-Ni3Mo3N heterojunction catalyst for pH universal hydrogen evolution reaction

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135379 - 135379

Published: April 14, 2025

Language: Английский

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Suppressing deactivation in alkaline seawater oxygen evolution with Fe-doping induced dual-phase lattice strain in Ni/Mo nitrides

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Functionalized 3D Mo₂N Current Collectors Drive Multi‐Phase Ni‐based Synergy and Mitigate Surface Reconstruction for Enhanced Oxygen Evolution Catalysis

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Electrochemical water splitting is a promising approach for sustainable hydrogen production, but the oxygen evolution reaction (OER) remains bottleneck due to sluggish kinetics, poor activity, and limited stability scalability. Here, Mo 2 N‐functionalized nickel designed foam (NF@Mo N) subsequently transform into N/NiSe/Ni P multi‐phase heterostructure through selenization phosphorization, address these challenges. The optimized NF@Mo catalyst integrates three key strategies: (I) functionalizing NF with N enhance conductivity charge transfer, (II) engineering collaborative multi‐interface optimize active sites (III) precisely controlling phase formation phosphorization mitigate surface reconstruction ensure long‐term stability. not only achieves an overpotential of 242 mV@10 mA cm −2 remarkable over 350 h, also low 395 mV at high current density 800 , outperforming pristine other control samples. Theoretical analysis reveals that N‐stabilized NiSe/Ni on enhances optimizes adsorption energies OER intermediates, leading improved catalytic performance This work provides new strategy designing high‐performance, non‐precious metal catalysts industrial applications advancing production.

Language: Английский

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Heterojunction Engineering of the Hierarchical SnO2/SnS2 to Boost Hydrogen Evolution Reaction in Alkaline and Acidic Solution

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180639 - 180639

Published: April 1, 2025

Language: Английский

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