Confined Atomically Mo‐Regulating Co³⁺ Sites Enhanced Electrocatalytic Seawater Oxidation

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Abstract Design and construction of stable single‐atom modified catalysts with suppressed deep reconstruction for long‐term durability highly active targeted catalysis in emains a great challenge. Herein, nitrogen/oxygen co‐doped carbon (NOC) encapsulated Mo atomically dispersed at Co 3+ sites 3 O 4 , are constructed through directed corrosion strategy. Meanwhile, the NOC confinement maintains stability single atoms promotes adsorbate evolution into lattice oxygen‐mediated mechanism. The reconstructed CoOOH is confined by layer, thus inhibiting its reconstruction, electrostatically repelling chloride ions to achieve electrolysis seawater. In real seawater flow cell, electrode requires 1.94 V reach 1.0 A cm −2 energy consumption 4.64 kWh Nm −3 ‐H 2 lower than that industrial alkaline electrolysis. continuous 300 h shows almost no decay, Faraday efficiency close 100%, indicating long‐lasting stability.

Язык: Английский

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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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Regulating d-p band center with selenium vacancy in iron diselenide nanoarrays towards sulfion-assisted seawater electrolysis for chlorine-free hydrogen production

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 684, С. 367 - 376

Опубликована: Янв. 8, 2025

Язык: Английский

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Breaking down the barrier: The progress and promise of seawater splitting

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 106, С. 334 - 352

Опубликована: Фев. 3, 2025

Язык: Английский

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Anti‐dissolving High Entropy Phosphorus Sulfide for Efficient and Durable Seawater Electrolysis

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Direct seawater electrolysis is a promising technology for massive green hydrogen production but limited by the lack of durable and efficient electrocatalysts toward oxygen evolution reaction (OER). Herein, high entropy phosphorus sulfide (HEPS) prepared as high‐performance OER catalyst splitting through simple vacuum high‐temperature sintering method. This needs overpotentials merely 245 313 mV in alkalized to deliver current densities 10 100 mA cm −2 , respectively, operates continuously 1200 h practical electrolyzer with negligible activity decay, making it one best catalysts reported date. Detailed experimental theoretical analyses reveal that excellent durability HEPS originates from P S material oxidized forms an anionic protective layer repel chloride ions, preventing further corrosion material. Meanwhile, formed V 2 O x species can effectively prevent oxidation. Further, highly stable assembled anode Ru@C cathode demonstrate practicability catalysts.

Язык: Английский

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Design strategies of electrocatalyst for improving durability and selectivity of seawater splitting

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160362 - 160362

Опубликована: Фев. 1, 2025

Язык: Английский

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Modulating Selectivity and Stability of the Direct Seawater Electrolysis for Sustainable Green Hydrogen Production

Materials Today Catalysis, Год журнала: 2025, Номер unknown, С. 100089 - 100089

Опубликована: Фев. 1, 2025

Язык: Английский

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Silver Induced In-Phase Electronic Interaction and Chloride Ion Repelling for Efficient Electrocatalytic Oxygen Evolution in Seawater Electrolysis

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 2, 2025

Seawater electrolysis for hydrogen production has emerged as a focal point in energy utilization technology due to its low carbon emissions and the abundance of seawater resources. However, high chlorine content an electrolyte negatively impacts stability performance anodic catalysts. Herein, we design silver integration strategy repel surface Cl– adsorption modulate electronic structure metal active center NiCo bimetallic organic framework (MOF). The obtained Ag@NiCo MOF achieves overpotential 269 mV at current density 10 mA cm–2 toward oxygen evolution reaction (OER) maintains this over 500 h simulated alkaline without obvious degradation. superior is because in-phase interaction induced by deposited Ag optimizes electron state sites. Moreover, situ transforms into AgCl during OER further triggering repulsion on electrode surface. This not only facilitates kinetic but also helps chloride ions enhances selectivity OER. electrochemical render them highly competitive among various catalysts spitting.

Язык: Английский

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Seawater electrolysis at ultra-high current density: A comparative analysis of cylindrical versus conical electrodes

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 114, С. 9 - 17

Опубликована: Март 1, 2025

Язык: Английский

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Electrocatalytic seawater splitting from direct electrolysis to hybrid electrolysis: Challenges and opportunities

Materials Today, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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