Structural Regulation Strategies of Atomic Cobalt Catalysts for Oxygen Electrocatalysis

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Oxygen electrocatalysis is a core reaction in renewable energy devices, greatly promoting the transformation and upgrading of structure. Nonetheless, performance conversion devices hindered by large overpotential slow kinetics oxygen electrocatalytic reactions. Recently, single‐atom catalysts (SACs) have emerged as promising contenders field because their exceptional metal atom utilization, distinctive coordination environment, adjustable electronic properties. This review presents latest advancements design Co‐based SACs for electrocatalysis. First, OER ORR mechanisms are introduced. Subsequently, strategies regulating structure summarized three aspects, including centers, support carriers. A particular emphasis given to relationship between properties catalysts. Afterward, applications explored. Ultimately, challenges prospects prospected.

Language: Английский

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Research Progress and Perspectives on Anti‐Poisoning Hydrogen Oxidation Reaction Electrocatalysts for Hydrogen Fuel Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract As global demand for clean and sustainable energy continues to rise, fuel cell technology has seen rapid advancement. However, the presence of trace impurities like carbon monoxide (CO) hydrogen sulfide (H₂S) in can significantly deactivate anode by blocking its active sites, leading reduced performance. Developing electrocatalysts that are resistant CO H₂S poisoning therefore become a critical priority. This paper provides comprehensive analysis mechanisms reviews key strategies developed over past few decades enhance impurity tolerance electrocatalysts. It begins examining differences oxidation reaction (HOR) acidic alkaline environments, focusing on roles binding (HBE) hydroxide (OHBE). Next, it outlines three main approaches mitigate poisoning: (I) bifunctional mechanisms, (II) direct (III) constructing protective layers. The review then shifts countering poisoning, emphasizing both electrocatalyst design structural improvements cells. Finally, highlights recent advances anti‐poisoning electrocatalysts, discusses their applications limitations, identifies challenges future opportunities further research this field.

Language: Английский

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Single-Atom Catalysts Toward Electrochemical Water Treatment

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 363, P. 124783 - 124783

Published: Nov. 5, 2024

Language: Английский

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External field-assisted catalysis

eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100398 - 100398

Published: March 1, 2025

Language: Английский

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Pd₁Ni₂ Trimer Sites Drive Efficient and Durable Hydrogen Oxidation in Alkaline Media

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: 147(6), P. 5398 - 5407

Published: Jan. 31, 2025

Anion-exchange membrane fuel cell (AEMFC) is a cost-effective hydrogen-to-electricity conversion technology under zero-emission scenario. However, the sluggish kinetics of anodic hydrogen oxidation reaction (HOR) impedes commercial implementation AEMFCs. Here, we develop Pd single-atom-embedded Ni3N catalyst (Pd1/Ni3N) with unconventional Pd1Ni2 trimer sites to drive efficient and durable HOR in alkaline media. Integrating theoretical experimental analyses, demonstrate that dual achieve "*H on Pd1Ni2-HV + *OH Pd1Ni2-HN" adsorption mode, effectively weakening overstrong *H adsorptions pristine Ni3N. Owing unique coordination mode atomically dispersed catalytic sites, resulting Pd1/Ni3N delivers high intrinsic mass activity together excellent antioxidation capability CO tolerance. Specifically, reaches 7.54 A mgPd-1 at overpotential 50 mV. The AEMFC employing as anode displays power density 31.7 W an ultralow precious metal loading only 0.023 mgPd cm-2. This study provides guidance for design high-performance atomic level.

Language: Английский

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System Design Considerations for Magneto‐Electrocatalysis of the Oxygen Evolution Reaction

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract The integration of an external magnetic field into electrocatalysis, termed magneto‐electrocatalysis, can target efficiency challenges in the oxygen evolution reaction (OER). Reaction rates be enhanced through improved mass transport reactants and products, manipulation spin states, lowered resistance. OER is a kinetic bottleneck electrocatalytic water splitting for sustainable hydrogen fuel. Previous studies lack comprehensive analyses consistent reporting effects, resulting varied interpretations. To establish optimized reliable systems at larger scales, significant research advancements are required. This perspective explores complex impact fields on OER, emphasizing interplay between various mechanisms such as spin‐polarization intermediates, Lorentz force‐induced magnetohydrodynamics, magnetoresistance. Here, how experimental design – electrode magnetism, shape, positioning, reactor setup significantly influence these highlighted. Through review current studies, major knowledge gaps propose methodologies identified to improve reproducibility comparability. article aims guide researchers toward development more efficient, scalable that leverage enhance push forward commercial green production.

Language: Английский

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Innovative single atom arrays for the electrocatalytic reaction

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Language: Английский

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LDH-Blended ZrO₂/Polysulfone Composite Membrane for Alkaline Water Electrolysis

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Language: Английский

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Engineering single‐atom equivalent trapping site for Photothermal CO₂ selective hydrogenation

AIChE Journal, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Abstract Photothermal CO 2 hydrogenation into value‐added products represents an optimal strategy for simultaneously addressing energy and environmental crises. However, achieving high production with selectivity target remains a grand challenge. Herein, we constructed S‐scheme ZnO/CeO decorated by bifunctional Pt cocatalyst. This photothermal catalyst exhibits both remarkable yield of the product. The nanoparticles can effectively enhance separation utilization charge carriers, facilitating this reaction. Notably, characterization techniques, in situ experiments, theoretical simulations have demonstrated that generation active surface lattice oxygen vacancies leads to trapping effect on carbon atoms CO, thereby playing crucial role modulating comparable impact single‐atom metals. Integrating promote reaction CO‐sensitive supports improved offers novel insights designing catalysts efficient hydrogenation.

Language: Английский

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Precision Structure Engineering of High-Entropy Oxides under Ambient Conditions

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 14807 - 14818

Published: Sept. 23, 2024

Language: Английский

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