Synergistic Sr Activation and Cr Buffering Effect on RuO₂ Electronic Structures for Enhancing the Acidic Oxygen Evolution Reaction

Nano Letters, Год журнала: 2024, Номер 24(35), С. 10899 - 10907

Опубликована: Авг. 26, 2024

The oxygen evolution reaction (OER) performance of ruthenium-based oxides strongly correlates with the electronic structures Ru. However, widely adopted monometal doping method unidirectionally regulates only structures, often failing to balance activity and stability. Here, we propose an "elastic electron transfer" strategy achieve bidirectional optimization Sr, Cr codoped RuO

Язык: Английский

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Recent advances and modulation tactics in Ru- and Ir-based electrocatalysts for PEMWE anodes at large current densities

eScience, Год журнала: 2024, Номер unknown, С. 100323 - 100323

Опубликована: Окт. 1, 2024

Язык: Английский

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Organic ligands and CeO₂-induced generic valence modulation strategies to design Fe active sites for promoted oxygen involved reactions in rechargeable zinc–air batteries

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

CeO 2 -induced multivalent state modulation strategies aim to modulate Fe active sites enhance oxygen reduction and evolution reactions.

Язык: Английский

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Tailoring oxygen vacancies of W-doped TiO2 to stabilize Ir for boosting oxygen evolution activity in proton-exchange membrane water electrolysis

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160933 - 160933

Опубликована: Фев. 1, 2025

Язык: Английский

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The Construction of Built-In Electric Field in P-N Heterojunction for Optimized Interface and Improved Oxygen Evolution Reaction Activity

Опубликована: Янв. 1, 2025

Язык: Английский

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Efficient oxygen evolution in acidic electrolysis of water using copper loaded with iridium nanoclusters

Journal of Environmental Sciences, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Rapid synthesis of metastable materials for electrocatalysis

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Metastable materials are considered promising electrocatalysts for clean energy conversions by virtue of their structural flexibility and tunable electronic properties. However, the exploration synthesis metastable via traditional equilibrium methods face challenges because requirements high precise control. In this regard, rapid method (RSM), with efficiency ultra-fast heating/cooling rates, enables production under non-equilibrium conditions. relationship between RSM properties remains largely unexplored. review, we systematically examine unique benefits various techniques mechanisms governing formation materials. Based on these insights, establish a framework, linking electrocatalytic performance Finally, outline future directions emerging field highlight importance high-throughput approaches autonomous screening optimal electrocatalysts. This review aims to provide an in-depth understanding electrocatalysts, opening up new avenues both fundamental research practical applications in electrocatalysis.

Язык: Английский

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Boosted Oxygen Evolution on Iridium through Dual‐Interface‐Diffusion Generated Oxygen Vacancies in Supporting Tungsten Oxide

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Abstract For oxygen evolution reaction (OER) in proton exchange membrane water electrolyzer (PEMWE), iridium (Ir) remains the primary active component catalysts, but its high cost and low utilization efficiency pose significant barriers to large‐scale deployment. Designing high‐performance supported Ir‐based catalysts is of urgent necessity. By constructing a hierarchical WO 3 @TiN supporting material, an Ir/WO catalyst designed with superior OER activity stability. The optimized exhibits mass (MA) up 920.93 mA mg Ir −1 , over 20 times that commercial IrO 2 . Experimental evidences confirm facilitated vacancies induced by diffusion Ti at interfaces. electrode assembly (MEA) fabricated anode (0.3 cm −2 ) can operate 1.0 A merely 1.60 V (70 °C), durable operation for 200 h. Theoretical calculations reveal doping atoms lattice promotes formation vacancy, which optimize surface electronic structure on lower energy barrier *OOH formation, leading boosted activity. This work not only introduces new strategies support design also shows their great potential practical applications.

Язык: Английский

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Electric field-assisted synthesis of multivalent WO3-x coupling with carbon nanotubes for promoting (photo-)electrocatalytic oxygen evolution reaction

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 127, С. 903 - 911

Опубликована: Апрель 18, 2025

Язык: Английский

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3D ordered RuO ₂/WO ₃ heterostructure inverse opal arrays for highly-active and stable acidic oxygen evolution reaction

Deleted Journal, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 8, 2024

Development of highly active and stable acidic oxygen evolution reaction catalyst is very important for efficient water splitting while remains challenging. Herein, we report a ordered RuO₂/WO₃ inverse opals (IOs) to address the bottleneck problem see-saw relationship between activity stability, in which crystalline corrosionresistant WO₃ facilitates electron transport stabilizes RuO₂, whereas lattice mismatch-induced amorphousdominated RuO₂ provides abundant unsaturated coordination sites enhance (OER) activity. Consequently, IOs demonstrates outstanding OER performance terms low overpotential 180 mV reach 10 mA·cm^–2, excellent stability maintaining 100 hours continuous test. Experimental characterizations density functional theory calculations reveal that interface coupling can spin polarization electrons increase overlaps electronic projected states Ru d orbitals metal O p intermediates, facilitating pathway switch from mechanism adsorbate mechanism, significantly decreases energy barrier process. Meanwhile, rich vacancies supports heterostructures could inhibit over-oxidation species, so as simultaneously.

Язык: Английский

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