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

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: Английский

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External field-assisted catalysis

eScience, Год журнала: 2025, Номер unknown, С. 100398 - 100398

Опубликована: Март 1, 2025

Язык: Английский

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Structural Regulation Strategies of Atomic Cobalt Catalysts for Oxygen Electrocatalysis

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

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Single-Atom Catalysts Toward Electrochemical Water Treatment

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 363, С. 124783 - 124783

Опубликована: Ноя. 5, 2024

Язык: Английский

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

Journal of the American Chemical Society, Год журнала: 2025, Номер 147(6), С. 5398 - 5407

Опубликована: Янв. 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.

Язык: Английский

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

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

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Innovative single atom arrays for the electrocatalytic reaction

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Язык: Английский

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Precision Structure Engineering of High-Entropy Oxides under Ambient Conditions

ACS Catalysis, Год журнала: 2024, Номер unknown, С. 14807 - 14818

Опубликована: Сен. 23, 2024

Язык: Английский

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Hierarchically Structured Catalysts toward Sustainable Hydrogen Economy: Electro‐ and Thermo‐chemical Pathways

ChemSusChem, Год журнала: 2024, Номер unknown

Опубликована: Окт. 18, 2024

Abstract Hydrogen, as an important clean energy source, plays a more and crucial role in decarbonizing the planet meeting global climate challenge due to its high density zero‐emission. The demand for sustainable hydrogen is increasing drastically worldwide driven by shift towards low‐carbon solutions. Thermochemical catalysis process dominates production at scale given relatively mature technology commercialization status, well established manufacturing infrastructure. While environmentally friendly nature growing abundant sources of renewable electricity, electrochemical path rising major alternative thermochemical means. Nevertheless, hierarchically structured catalysts devices have gradually taken center stage toward replacing traditional counterparts, especially with rapid advancement design manufacture such ordered nanostructure assemblies activity, efficient mass transport, superb stability. In this review, latest progress been surveyed on electro‐ thermo‐ chemical pathways comparatively. It covers structure designs atomic dispersion, nanoscale surfaces interfaces achieving highly active durable catalysts, components, devices. Both approaches are reviewed terms vast details, engineered benefits, understandings various Pt‐group metal (PGM) non‐PGM based transition production. As trend, brief discussions also presented high‐level assembly complexly components systems.

Язык: Английский

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A Review on Solid-Solid Heterogeneous Interfacial Interaction in Electrocatalytic Conversion of Inorganic Molecules

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A schematic depiction of the various solid–solid interfaces existing in a porous electrode.

Язык: Английский

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