Lattice distortion induced Ce-doped NiFe-LDH for efficient oxygen evolution

Chemical Engineering Journal, Год журнала: 2023, Номер 464, С. 142669 - 142669

Опубликована: Март 29, 2023

Язык: Английский

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Highly efficient and stable oxygen evolution from seawater enabled by a hierarchical NiMoS_x microcolumn@NiFe-layered double hydroxide nanosheet array

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(9), С. 2766 - 2775

Опубликована: Янв. 1, 2023

In situ Raman spectroscopy studies indicate that the high-valent molybdate ions can promote generation of disordered NiOOH active species and protect catalysts from Cl − corrosion during seawater oxidation.

Язык: Английский

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Fe and Mo dual-site single-atom catalysts for high-efficiency wide-pH hydrogen evolution and alkaline overall water splitting

Chemical Engineering Journal, Год журнала: 2023, Номер 468, С. 143605 - 143605

Опубликована: Май 19, 2023

Язык: Английский

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In Situ Raman Study of Surface Reconstruction of FeOOH/Ni₃S₂ Oxygen Evolution Reaction Electrocatalysts

Small, Год журнала: 2024, Номер 20(23)

Опубликована: Янв. 2, 2024

Abstract Construction of heterojunctions is an effective strategy to enhanced electrocatalytic oxygen evolution reaction (OER), but the structural active phases and synergistic mechanism still lack in‐depth understanding. Here, FeOOH/Ni 3 S 2 heterostructure supported on nickel foam (NF) through a two‐step hydrothermal‐chemical etching method reported. In situ Raman spectroscopy study surface reconstruction behaviors /NF indicates that Ni can be rapidly converted NiOOH, accompanied by phase transition from α ‐FeOOH β during OER process. Importantly, deep analysis Ni─O bond reveals FeOOH regulate lattice disorder NiOOH for improved catalytic activity. Density functional theory (DFT) calculations further confirm NiOOH/FeOOH possess strengthened adsorption O‐containing intermediates, as well lower energy barrier toward OER. As result, exhibits promising activity stability in alkaline conditions, requiring overpotential 268 mV @ 100 mA cm −2 long‐term over 200 h at current density . This work provides new perspective understanding heterogeneous electrocatalysts

Язык: Английский

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Interface engineering of three-phase nickel–cobalt sulfide/nickel phosphide/iron phosphide heterostructure for enhanced water splitting and urea electrolysis

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 665, С. 88 - 99

Опубликована: Март 19, 2024

Язык: Английский

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ZnSnO3 perovskite nanostructure anchored on reduced graphene (rGO) nanosheets as an efficient electrocatalyst for oxygen evolution reaction (OER)

Diamond and Related Materials, Год журнала: 2024, Номер 148, С. 111456 - 111456

Опубликована: Июль 30, 2024

Язык: Английский

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Strong Electronic Metal-Support Interaction of Ni4Mo/N-SrMoO4 Promotes Alkaline Hydrogen Electrocatalysis

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124660 - 124660

Опубликована: Сен. 1, 2024

Язык: Английский

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Enhancing electrochemical performance and corrosion resistance of nickel-based catalysts in seawater electrolysis: focusing on OER and HER

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(35), С. 23147 - 23178

Опубликована: Янв. 1, 2024

Hydrogen production by electrochemical hydrogen evolution reaction (HER) using eco-friendly seawater electrolysis can help address the energy shortage.

Язык: Английский

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Enriched edge sites of ultrathin Ni3S2/NiO nanomeshes promote surface reconstruction for robust electrochemical water splitting

Nano Energy, Год журнала: 2024, Номер 129, С. 110020 - 110020

Опубликована: Июль 18, 2024

Developing highly efficient nonnoble bifunctional electrocatalysts for both the H2 evolution reaction (HER) and O2 (OER) is essential but challenging overall water splitting (OWS). Ni based catalysts are proved as promising candidates splitting, which usually undergo surface reconstruction by transforming into nickel oxyhydroxides active sites. Although evidence suggests that originates from exchange of lattice oxygen with OH- in electrolyte under electric field, modulating remains a great challenge. Herein, we propose an edge sites enrichment strategy to promote phase evolution. The one-step synthesized ultrathin Ni3S2/NiO nanomeshes exhibited porous structure contain abundant in-plane interface Owing unique structure, possessed affinity feature proton OH-, resulting faster Ni3S2 Ni(OH)2 than bulk subsequently converted γ-NiOOH lower adsorption barrier H*. Consequently, outstanding OER activity (300 mV at 200 mA cm−2) unexpected HER (73 10 1.0 M KOH. Remarkably, achieved ultralow voltage 1.41 V cm−2 excellent stability prevailed over most reported catalysts. Moreover, performed yield 900 µmol/h solar-assisted system minimum sales price $1.77/kg, much commercial catalyst ($7.18/kg). This work sets new benchmark monometallic industrial provides insights synthesis 2D nanomeshes.

Язык: Английский

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Mo-doping and construction of the heterostructure between NiFe LDH and NiSx co-trigger the activity enhancement for overall water splitting

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 664, С. 980 - 991

Опубликована: Март 11, 2024

Язык: Английский

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