Surface Corrosion‐Resistant and Multi‐Scenario MoNiP Electrode for Efficient Industrial‐Scale Seawater Splitting

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 30, 2024

Abstract The construction of efficient and durable multifunctional electrodes for industrial‐scale hydrogen production presents a main challenge. Herein, molybdenum‐modulated phosphorus‐based catalytic (Mo‐NiP@NF) are prepared via mild electroless plating. Heteroatoms doping or heterostructures can reconfigure the intrinsic electronic structure pre‐catalyst optimizes key intermediates adsorption. Moreover, (hypo/meta‐)phosphite anions (PO x δ− ) molybdate ions (MoO on electrode surface Mo‐NiP@NF afford resistance to chloride (Cl − corrosion. exhibits ultralow overpotentials 278/550 282/590 mV at 1 A cm −2 during hydrogen/oxygen evolution reaction (HER/OER) in alkaline simulated real seawater, respectively, whereas overall seawater splitting (OWS) reach 1.96 1.97 V cell . Remarkably, maintains stable operation 1500 h OWS. scalability allowing assembly proton exchange membrane (PEM) electrolyzer powered by photovoltaic energy, simulating portable hydrogen‐oxygen respirator provides an oxygen/hydrogen flows 160/320 mL min −1 Expanding further, trace ruthenium‐loaded catalyst sodium borohydride (NaBH 4 hydrolysis achieving generation rate (HGR) 11049.2 g This work strategic innovations optimization solutions economical multi‐scenario green energy conversion materials application.

Язык: Английский

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Rational Design of Prussian Blue Analogues for Ultralong and Wide-Temperature-Range Sodium-Ion Batteries

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Architecting Prussian blue analogue (PBA) cathodes with optimized synergistic bimetallic reaction centers is a paradigmatic strategy for devising high-energy sodium-ion batteries (SIBs); however, these usually suffer from fast capacity fading and sluggish kinetics. To alleviate the above problems, herein, series of early transition metal (ETM)-late (LTM)-based PBA (Fe-VO, Fe-TiO, Fe-ZrO, Co-VO, Fe-Co-VO) cathode materials have been conveniently fabricated via an "acid-assisted synthesis" strategy. As paradigm, FeVO-PBA (FV) delivers superb rate capability (148.9 56.1 mAh/g under 0.5 100 C, respectively), remarkable cycling stability over 30,000 cycles, high energy density (259.7 Wh/kg full cell), wide operation-temperature range (-60-80 °C). In situ/ex situ techniques functional theory calculations reveal quasi-zero-strain multielectron redox mechanisms during cycling, supporting its higher specific stable cycling. It considered that d-d electron compensation effect between Fe V enhanced reversibility kinetics reactions simultaneously improved electronic conductivity structural cathode. This work may pave new way rational design high-performance SIBs.

Язык: Английский

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Design of RuO_x Electrocatalysts Containing Metallic Ru on the Surface to Accelerate the Alkaline Hydrogen Evolution Reaction

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 27, 2025

The development of water splitting technology in alkaline medium requires the exploration electrocatalysts superior to Pt/C boost hydrogen evolution reaction (HER). Ruthenium oxides with strong dissociation ability are promising candidates; however, lack combination sites immensely limits their performance. Herein, we reported a unique RuOx catalyst metallic Ru on its surface through simple cation exchange method. We demonstrated that formation greatly enhances interaction between and adsorbed (*H), resulting extremely high HER activity media. Moreover, proposed potential zero charge (Epzc) as descriptor ruthenium-base catalysts for first time revealed existence optimizes Epzc toward region. As result, designed achieves an overpotential only 18 mV at current density 10 mA cm–2. Furthermore, 1.80 V reach 800 cm–2 anion membrane electrolyzer, outperforming benchmark Pt/C.

Язык: Английский

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Recycling Spent Lithium-Ion Battery Cathodes to Multimetallic Phosphides for High-Efficiency Oxygen Evolution Reaction

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Язык: Английский

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Engineering Ru and Ni sites relay catalysis and strong metal-support interaction for synergetic enhanced electrocatalytic hydrogen evolution performance

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161348 - 161348

Опубликована: Март 1, 2025

Язык: Английский

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Rapid Outgassing of Hydrophilic TiO2 Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Март 13, 2025

Abstract The state-of-the-art anion-exchange membrane water electrolyzers (AEMWEs) require highly stable electrodes for prolonged operation. stability of the electrode is closely linked to effective evacuation H 2 or O gas generated from surface during electrolysis. In this study, we prepared a super-hydrophilic by depositing porous nickel–iron nanoparticles on annealed TiO nanotubes (NiFe/ATNT) rapid outgassing such nonpolar gases. NiFe/ATNT exhibited an overpotential 235 mV at 10 mA cm −2 oxygen evolution reaction in 1.0 M KOH solution, and was utilized as anode AEMWE achieve current density 1.67 A 1.80 V. addition, with electrode, which enables outgassing, showed record 1500 h 0.50 under harsh temperature conditions 80 ± 3 °C.

Язык: Английский

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Engineered Nickel–Iron Nitride Electrocatalyst for Industrial‐Scale Seawater Hydrogen Production

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

Abstract Seawater electrolysis under alkaline conditions is a crucial technology for sustainable hydrogen production. However, achieving the long‐term stability of electrocatalyst remains significant challenge. In this study, it demonstrated that surface reconstruction transition metal nitride (TMN) can be used to develop highly stable oxygen evolution reaction (OER) electrocatalyst. Rapid introduction phosphate groups (PO 4 3− ) accelerates in situ Ni 3 FeN, generating catalyst, with conductive core and Cl − ‐resistant hydroxide shell demonstrates outstanding performance, maintaining over 2500 h at 1 A cm −2 current density seawater. characterization functional theory (DFT) calculations reveal dynamic active sites, providing insights into mechanisms driving stability. This work not only introduces an efficient approach TMN‐based catalyst design but also advances development durable electrocatalysts industrial‐scale seawater

Язык: Английский

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Optimizing Sodium Ion Adsorption Through Robust d–d Orbital Modulation for Efficient Capacitive Deionization

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 5, 2024

Abstract Unraveling the fundamental mechanisms of sodium ion adsorption behavior is crucial for guiding design electrode materials and enhancing performance capacitive deionization systems. Herein, optimization systematically investigated through robust d–d orbital interactions within zinc‐doped iron carbide, facilitated by a novel liquid nitrogen quenching treatment. Liquid treatment can enhance coordination number, strengthen interactions, promote electron transfer, shift d‐band center Fe closer to Fermi level, thereby ions energy. Consequently, obtained material achieves superior gravimetric capacity 121.1 mg g −1 attractive cyclic durability. The highly competitive compared vast majority related research works in field deionization. Furthermore, adsorption/desorption are substantiated ex situ techniques, revealing dynamic atomic electronic structure evolutions under operational conditions. This work demonstrates that optimizing via modulation enabled an effective approach developing efficient materials.

Язык: Английский

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Hollow Mo Doped CoS₂ Polyhedron Derived from Polyoxometalate‐based Metal‐Organic Frameworks for Efficient Overall Water Splitting

ChemistrySelect, Год журнала: 2025, Номер 10(4)

Опубликована: Янв. 1, 2025

Abstract Nowadays, the sluggish hydrogen evolution reaction (HER) and oxygen (OER) kinetics are key obstacles limiting commercial application of water splitting. In this study, a size‐matching strategy is proposed to construct molybdenum‐doped CoS 2 polyhedra (Mo‐CoS ) by encapsulating polyoxometalate (POM, H 3 PMo 12 O 40 guests into mesoporous zeolite imidazolium framework‐67 (ZIF‐67), with thioacetamide (TAA) serving as gentle sulfur source. The catalyst exhibits pronounced hollow structure due synergistic etching effects POM TAA, which can increase number active sites. Additionally, incorporation Mo optimizes electronic structure, thereby improving both HER OER performance. alkaline electrolytes, Mo‐CoS delivers an overpotential 330 mV 269 for HER, respectively, produce current density 100 mA cm −2 . Moreover, demonstrates exceptional performance in overall splitting, achieving cell voltage 1.55 V at 10 , along outstanding long‐term stability. This study provides promising avenue structural component optimization cobalt sulfide, could significantly improve efficiency production.

Язык: Английский

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Theoretical insights into performance descriptors and their impact on activity optimization strategies for cobalt-based electrocatalysts

Coordination Chemistry Reviews, Год журнала: 2025, Номер 533, С. 216560 - 216560

Опубликована: Фев. 27, 2025

Язык: Английский

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