Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 962, P. 118291 - 118291
Published: April 21, 2024
Language: Английский
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)
Published: June 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.
Language: Английский
Citations
34
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(28)
Published: April 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.
Language: Английский
Citations
19
Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 371 - 381
Published: Jan. 21, 2025
Language: Английский
Citations
3
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 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
Language: Английский
Citations
3
Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 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.
Language: Английский
Citations
3
Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 8007 - 8016
Published: July 27, 2024
Language: Английский
Citations
18
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Aug. 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
Language: Английский
Citations
16
Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 100, P. 317 - 326
Published: Sept. 7, 2024
Language: Английский
Citations
14
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(25)
Published: April 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
Language: Английский
Citations
13
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 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.
Language: Английский
Citations
1