Efficient and Ultrastable Seawater Electrolysis at Industrial Current Density with Strong Metal‐Support Interaction and Dual Cl⁻‐Repelling Layers

Advanced Materials, Год журнала: 2024, Номер 36(49)

Опубликована: Окт. 25, 2024

Abstract Direct seawater electrolysis is emerging as a promising renewable energy technology for large‐scale hydrogen generation. The development of Os‐Ni 4 Mo/MoO 2 micropillar arrays with strong metal‐support interaction (MSI) bifunctional electrocatalyst reported. structure enhances electron and mass transfer, extending catalytic reaction steps improving efficiency. Theoretical experimental studies demonstrate that the MSI between Os Ni optimizes surface electronic catalyst, reducing barrier thereby activity. Importantly, first time, dual Cl − repelling layer constructed by electrostatic force to safeguard active sites against attack during oxidation. This includes Os─Cl adsorption an in situ‐formed MoO 2− layer. As result, catalyst exhibits ultralow overpotential 113 336 mV reach 500 mA cm −2 HER OER natural from South China Sea (without purification, 1 m KOH added). Notably, it demonstrates superior stability, degrading only 0.37 µV h −1 after 2500 oxidation, significantly surpassing technical target 1.0 set United States Department Energy.

Язык: Английский

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High entropy catalysts in electrolytic water splitting: A review from properties to applications

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155736 - 155736

Опубликована: Сен. 12, 2024

Язык: Английский

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Screening biomass by machine learning to construct Fe/Co loaded carbon for organic pollutants degradation via peroxymonosulfate activation

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131664 - 131664

Опубликована: Янв. 1, 2025

Язык: Английский

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Unveiling the Dual Active Sites of Ni/Co(OH)₂‐Ru Heterointerface for Robust Electrocatalytic Alkaline Seawater Splitting

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract Constructing bifunctional electrocatalysts through the synergistic effect of diverse metal sites is crucial for achieving high‐efficiency and steady overall water splitting. Herein, a “dual‐HER/OER‐sites‐in‐one” strategy proposed to regulate dominant active sites, wherein Ni/Co(OH) 2 ‐Ru heterogeneous catalysts formed on nickel foam (NF) demonstrate remarkable catalytic activity oxygen evolution reaction (OER) as well hydrogen (HER). Meanwhile, potentials@10 mA cm −2 ‐Ru@NF alkaline seawater splitting are only 1.36 1.41 V, respectively, surpassing those commercial RuO @NF Pt/C@NF. The Ru site identified primary HER by density functional theory (DFT) calculations, while Co(OH) displays minimal rate‐determining step energy barrier (RDS) functions main OER. This study offers novel perspectives rational utilization species’ capabilities developing dual multifunctional electrocatalysts.

Язык: Английский

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3d–2p–5d Orbital Synergy in Electrocatalytic Hydrazine Oxidation Assisted Water Splitting with Industrial Scale Current Density

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 2, 2025

The hydrazine oxidation reaction (HzOR) is a promising alternative to the oxygen evolution (OER) in electrolyzers due its lower potential than water, which significantly reduces energy demands and enhances hydrogen production efficiency. Incorporating high-valent 5d metals into 3d metal hydroxides has shown great for enhancing water-splitting performance through strong 3d–2p–5d orbital interactions, improving charge transfer, intermediate adsorption, reducing overpotentials. This study showcases an innovative approach enhance electrocatalytic of Co(OH)2 incorporation metal, tungsten (W6+), using straightforward electrochemical synthesis method. W6+ led significant Co3d–O2p–W5d coupling, strengthening electronic interactions between Co W. facilitated electron withdrawal from Co2+, promoting easier access Co3+ sites catalytic performance. W-Co(OH)2 achieved current density 100 mA cm–2 at 1.00 V versus RHE HzOR, notably 1.54 required OER. In two-electrode system, substituting OER with HzOR resulted reduction cell voltage by 0.50 V.

Язык: Английский

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Ce-doped and carbon-coating nano-needle-shaped NiCoP as a superior electrocatalyst for water splitting

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114328 - 114328

Опубликована: Март 1, 2025

Язык: Английский

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Recent progress and advancement on zinc-based materials for water splitting: Structure-property-performance correlation

Coordination Chemistry Reviews, Год журнала: 2025, Номер 535, С. 216647 - 216647

Опубликована: Апрель 3, 2025

Язык: Английский

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Metal-Organic Framework (MOF) Based Materials: Promising Candidates for Electrocatalytic Seawater Splitting

Materials Chemistry Frontiers, Год журнала: 2024, Номер 8(19), С. 3136 - 3149

Опубликована: Янв. 1, 2024

MOF-based materials for seawater electrolysis have been reviewed with a focus on structure–property–performance.

Язык: Английский

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Cerium-doped construction of oxygen vacancies in IrO2 to promote acidic OER reaction

Journal of Electroanalytical Chemistry, Год журнала: 2024, Номер unknown, С. 118650 - 118650

Опубликована: Сен. 1, 2024

Язык: Английский

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Effect of heat and bubble mass transfer on the efficiency of alkaline electrolysis hydrogen production

Nano Research, Год журнала: 2024, Номер 17(11), С. 9345 - 9370

Опубликована: Авг. 27, 2024

Язык: Английский

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