Structural engineering evoked multifunctionality in molybdate nanosheets for industrial oxygen evolution and dual energy storage devices inspired by multi-method calculations

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 676, С. 471 - 484

Опубликована: Июль 23, 2024

Язык: Английский

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Facilitating active NiOOH formation via Mo doping towards high-efficiency oxygen evolution

Catalysis Science & Technology, Год журнала: 2024, Номер 14(15), С. 4166 - 4173

Опубликована: Янв. 1, 2024

The promotion effects of Mo doping into NiFe layered double hydroxide were revealed as facilitated NiOOH generation, tailored *OH adsorption, and improved dehydrogenation, which enabled enhanced activity durability towards water oxidation.

Язык: Английский

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Crystalline‐Amorphous Interface‐Triggered Electron Redistribution on Copper(II) Sulfide@Metal (Ni, Co, and Fe) Oxyhydroxides for Ultra‐Efficient Overall Water/Seawater Splitting

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Abstract Rearranging the electronic orbitals of metal sites through interface engineering is breakthrough for achieving high efficiencies in hydrogen/oxygen evolution reactions (HER/OER) on bimetallic catalysts. Here, via a multistep liquid‐phase synthesis strategy, crystalline‐amorphous (c‐a) built by coating amorphous oxyhydroxide layer surface crystallized copper(II) sulfide (CuS@MOOH, M = iron (Fe), cobalt (Co) and nickel (Ni)) with an internal cavity. For HER, c‐a facilitates electron filling 3d Cu, thereby enhancing coordination between Cu (Cu 2+ /Cu + ) *H reducing energy barrier adsorption. OER, triggers rearrangement sites, prompting transition from t2g to eg achieve half‐filled state, optimizing oxygen‐intermediates adsorption (M 3+ /M 4+ ). Among CuS@MOOH, as‐marked CuS@CoOOH‐6 exhibits best activities ultra‐low overpotentials 62 mV (HER) 136 (OER). Only 1.52 V sufficient power electrolyzer CuS@CoOOH‐6‐based cathode/anode, maintaining ultra‐stable efficiency (96.9 %) over 72 h. Notably, also impressive activity/durability natural seawater electrolysis. This study enhances understanding properties structure water splitting.

Язык: Английский

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Anion modulate the morphological and electronic structure of NiFe-based electrocatalyst for efficient urea oxidation-assisted water electrolysis

Journal of Material Science and Technology, Год журнала: 2024, Номер 197, С. 207 - 214

Опубликована: Март 14, 2024

Язык: Английский

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Boosting urea-assisted water splitting over P-MoO2@CoNiP through Mo leaching/reabsorption coupling CoNiP reconstruction

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 676, С. 445 - 458

Опубликована: Июль 19, 2024

Язык: Английский

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Review on chemisorbed oxyanions on electrocatalysts for efficient oxygen evolution reaction

Nano Energy, Год журнала: 2024, Номер 129, С. 110089 - 110089

Опубликована: Авг. 5, 2024

Язык: Английский

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Utilizing reconstruction achieves ultrastable water electrolysis

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(50)

Опубликована: Дек. 2, 2024

The dissolution of active atoms under operating potential will lead to a decline in their oxygen evolution reaction (OER) performance, thus preventing the current highly catalysts from being practically applicable industrial water electrolysis. Here, we propose sequential leaching strategy utilize dynamic restructuring and enhance chemical bond strength for stable OER. Modeling on nickel-iron sulfides (NiFe-S), introduced utilized foreign Mo dopant preleaching as sacrificial agent alleviate oxidation corrosion partial M─S bonds. Operando spectroscopic reveal that leach matrix then adsorb surface NiFe O(S)OH molybdate at lower OER potential. crystal occupation hamiltonian population analysis uncovers charge transfer into energy M─S, further S Fe/Ni leaching. By manipulating ion leaching, resulting phase achieves an ultralow overpotential 250 mV 400 mA cm −2 high stability more than 3,700 h 100 . An electrolysis equipment using our delivered consumption 4.30 kWh m −3 H2 record over (2,300 lifetime by epitaxial method with 10% attenuation) working 8,000 mA. hydrogen production cost US$2.46/kg aligns green target set European Commission coming decade.

Язык: Английский

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High-entropy layered hydroxide for efficient and sustainable seawater oxidation

Materials Advances, Год журнала: 2024, Номер 5(12), С. 5156 - 5166

Опубликована: Янв. 1, 2024

High-entropy NiCrCoFeMo layered hydroxide has been identified as a potential electrocatalyst for sustainable seawater oxidation with high activity and great corrosion resistance ability.

Язык: Английский

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Leaching-Reconstruction Engineering of Anions on Ferronickel Phosphate Promotes the Enhancement of the Oxygen Evolution Reaction

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(9), С. 13851 - 13860

Опубликована: Фев. 21, 2025

Electrochemical reconstruction typically generates powerful active sites for the oxygen evolution reaction (OER). However, engineering effective strategies to manipulate in situ formation of desired catalytically surfaces, generate sites, and enhance their catalytic performance remains a challenge. Herein, leveraging oxidation-potential-assisted precipitation etching, heterostructure NiFeOOH/NiFe phosphate was meticulously engineered achieve highly efficient OER. During electrochemical reconstruction, leaching inactive PO43- species NiFe facilitates exposure more Ni and/or Fe creates pores, thereby contributing NiFeOOH layer on surface phosphate. The resultant exhibits excellent OER activity with an overpotential 205 mV at 50 mA cm-2 alkaline electrolyte. theoretical calculations reveal that weakens thermodynamic barrier from *O *OOH, thus enhancing activity. present proof-of-concept study introduces approach facilitate further exploration development energy-related applications.

Язык: Английский

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Redox-active ligands for oxygen evolution reactions activity: modulation of metal valence states in synthesis and accelerated reconstruction by rapid hydrolysis in alkaline electrolytes

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116622 - 116622

Опубликована: Апрель 1, 2025

Язык: Английский

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