Advancements in Ruthenium (Ru)‐Based Heterostructure Catalysts: Overcoming Bottlenecks in Catalysis for Hydrogen Evolution Reaction

Advanced Energy Materials, Год журнала: 2024, Номер 14(35)

Опубликована: Июнь 25, 2024

Abstract Investigating clean and sustainable hydrogen generation from water splitting requires cost‐effective highly efficient electrocatalysts for the evolution reaction (HER). Ruthenium (Ru)‐based heterostructure catalysts have emerged as promising alternatives to precious Pt, offering significant potential overcome current bottlenecks. Recent advancements in Ru‐based focused on achieving a balance between catalytic activity stability. An overview of these developments provides insights into mechanisms facilitates development novel catalysts. This review begins with an exploration enhanced catalysts, followed by critical summary synthetic strategies employed fabricate their performances HER. Attention is then directed experimental endeavors aimed at enhancing HER performance Finally, opportunities challenges developing perspectives material design synthesis are discussed. Through discussions, comprehensive understanding inspiring future research directions aim provide.

Язык: Английский

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Dilute RuCo Alloy Synergizing Single Ru and Co Atoms as Efficient and CO‐Resistant Anode Catalyst for Anion Exchange Membrane Fuel Cells

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(28)

Опубликована: Апрель 26, 2024

Abstract Ruthenium (Ru) is considered a promising candidate catalyst for alkaline hydroxide oxidation reaction (HOR) due to its hydrogen binding energy (HBE) like that of platinum (Pt) and much higher oxygenophilicity than Pt. However, Ru still suffers from insufficient intrinsic activity CO resistance, which hinders widespread use in anion exchange membrane fuel cells (AEMFCs). Here, we report hybrid (RuCo) NC+SAs /N‐CNT consisting dilute RuCo alloy nanoparticles atomically single Co atoms on N‐doped carbon nanotubes The exhibits state‐of‐the‐art with high mass 7.35 A mg −1 . More importantly, when used as an anode AEMFCs, peak power density reaches 1.98 W cm −2 , one the best AEMFCs properties noble metal‐based catalysts at present. Moreover, has superior long‐time stability resistance. experimental functional theory (DFT) results demonstrate alloying monodecentralization exotic element greatly modulates electronic structure host Ru, thus optimizing adsorption H OH promoting surface, then stimulates HOR tolerance catalyst.

Язык: Английский

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Dual active site and metal–substrate interface effect endow platinum–ruthenium/molybdenum carbide efficient pH-universal hydrogen evolution reaction

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 685, С. 371 - 381

Опубликована: Янв. 21, 2025

Язык: Английский

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Revealing the Role of Ru‐O‐Ce Interface Coupling in CeO₂‐Ru Aerogel for Boosting Hydrogen Evolution Kinetics

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Abstract Designing heterogeneous interface to enhance the kinetics for electrocatalysts is a highly efficient but challenging pathway toward hydrogen evolution reaction (HER) in water electrolysis. Herein, coupling of CeO 2 quantum dots onto porous Ru aerogel through interfacial Ru‐O‐Ce bridge proposed construct ‐Ru as superior HER electrocatalyst with ultra‐low overpotentials. In situ characterizations and theoretical calculations reveal electron distribution at boost bonding sites, faster adsorption dissociation sites kinetics. Furthermore, employed excellent cathodes both acidic alkaline electrolyzers ampere‐level current density stably operated over 500 hours. Thus, synergistic effect tunes catalytic mechanism reinforces activity, realizing generation

Язык: Английский

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Breaking symmetry for better catalysis: insights into single-atom catalyst design

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.

Язык: Английский

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Experimental and theoretical investigation of sulfur-doped g-C3N4 nanosheets/FeCo2O4 nanorods S-scheme heterojunction for photocatalytic H2 evolution

Nano Research, Год журнала: 2024, Номер 17(9), С. 8007 - 8016

Опубликована: Июль 27, 2024

Язык: Английский

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Oxophilic gallium single atoms bridged ruthenium clusters for practical anion-exchange membrane electrolyzer

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Авг. 8, 2024

The development of highly efficient and durable alkaline hydrogen evolution reaction (HER) catalysts is crucial for achieving high-performance practical anion exchange membrane water electrolyzer (AEMWE) at ampere-level current density. Herein, we report a design concept by employing Ga single atoms as an electronic bridge to stabilize the Ru clusters boosting HER performance in AEMWE. Experimental theoretical results collectively reveal that bridged sites trigger strong metal-support interaction homogeneous distribution with high density, well optimize Ru-H bond strength due electron transfer between enhanced intrinsic activity. Moreover, oxophilic near tend adsorb hydroxyl species accelerate dissociation sufficient proton supplement medium. Ru-Ga

Язык: Английский

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Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

Journal of Energy Chemistry, Год журнала: 2024, Номер 100, С. 317 - 326

Опубликована: Сен. 7, 2024

Язык: Английский

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Gradient OH Desorption Facilitating Alkaline Hydrogen Evolution Over Ultrafine Quinary Nanoalloy

Advanced Energy Materials, Год журнала: 2024, Номер 14(25)

Опубликована: Апрель 5, 2024

Abstract Strengthening OH adsorption on electrocatalyst is crucial to promote the rate‐determining water dissociation step of alkaline hydrogen evolution reaction (HER), whereas too‐intensified will poison active sites instead. This dilemma remains one major challenges for improving electrocatalysts’ HER activities. Herein, a surprising finding that strongly adsorbed an ultrafine quinary PtCoCuNiZn nanoalloy can be facilely desorbed via unique gradient desorption pattern reported, which tremendously boosts its activity. Theoretical simulations unravel possesses versatile metal adsorbing and gradiently transferred desorb from with moderate energy barriers each transfer desorption. In meanwhile, mode also experimentally evidenced by in situ Raman spectroscopy cyclic voltammetry measurements. offers fresh opportunity expedite without compromising strength electrocatalysts, thus maximally promotes their properties unlocks full potential

Язык: Английский

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Cluster‐Scale Multisite Interface Reinforces Ruthenium‐Based Anode Catalysts for Alkaline Anion Exchange Membrane Fuel Cells

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Ruthenium (Ru) is a more cost-effective alternative to platinum anode catalysts for alkaline anion-exchange membrane fuel cells (AEMFCs), but suffers from severe competitive adsorption of hydrogen (Had) and hydroxyl (OHad). To address this concern, strongly coupled multisite electrocatalyst with highly active cluster-scale ruthenium-tungsten oxide (Ru-WOx) interface, which could eliminate the phenomenon achieve high coverage OHad Had at Ru WOx domains, respectively, designed. The experimental theoretical results demonstrate that domain functions as proton sponge perpetually accommodate activated species spillover adjacent domain, resulting WO-Had are readily Ru-OHad heterointerface finish oxidation reaction faster kinetics via thermodynamically favorable Tafel-Volmer mechanism. AEMFC delivers peak power density 1.36 W cm-2 low catalyst loading 0.05 mgRu outstanding durability (negligible voltage decay over 80-h operation 500 mA cm-2). This work offers completely new insights into understanding HOR mechanism designing advanced AEMFCs.

Язык: Английский

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