Mechanism Insights and Design Strategies for Metal-Organic Framework-Based Alkaline Hydrogen Evolution Reaction Electrocatalysts

Nano Energy, Год журнала: 2024, Номер 130, С. 110177 - 110177

Опубликована: Авг. 25, 2024

Язык: Английский

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Destabilization of Single‐Atom Catalysts: Characterization, Mechanisms, and Regeneration Strategies

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Abstract Numerous in situ characterization studies have focused on revealing the catalytic mechanisms of single‐atom catalysts (SACs), providing a theoretical basis for their rational design. Although research is relatively limited, stability SACs under long‐term operating conditions equally important and prerequisite real‐world energy applications, such as fuel cells water electrolyzers. Recently, there has been rise destabilization regeneration SACs; however, timely comprehensive summaries that provide catalysis community with valuable insights directions are still lacking. This review summarizes recent advances strategies SACs, specifically highlighting various state‐of‐the‐art techniques employed studies. The factors induce identified by discussing failure active sites, coordination environments, supports, reaction scenarios. Next, primary introduced, including redispersion, surface poison desorption, exposure subsurface sites. Additionally, advantages limitations both ex discussed. Finally, future proposed, aimed at constructing structure–stability relationships guiding design more stable SACs.

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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Transition metal tellurides for water electrolysis: Recent advances and perspectives

Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101796 - 101796

Опубликована: Янв. 1, 2025

Язык: Английский

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Anchoring Ni(OH)₂‐CeO_x Heterostructure on FeOOH‐Modified Nickel‐Mesh for Efficient Alkaline Water‐Splitting Performance with Improved Stability under Quasi‐Industrial Conditions

Small, Год журнала: 2024, Номер 20(44)

Опубликована: Июль 16, 2024

Developing low-cost and industrially viable electrode materials for efficient water-splitting performance constructing intrinsically active with abundant sites is still challenging. In this study, a self-supported porous network Ni(OH)

Язык: Английский

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Architecting Ni₃Se₄‐NiSe₂‐Co₃O₄ Triple‐Interface Heterostructure on MXene Nanosheets for Boosting Water Splitting by Electronic Modulation and Interface Effects

Small, Год журнала: 2024, Номер 20(43)

Опубликована: Авг. 15, 2024

Strategically engineering electrocatalysts with optimized interfacial electronic architectures and accelerated reaction dynamics is pivotal for augmenting hydrogen generation via alkaline water electrolysis on an industrial scale. Herein, a novel triple-interface heterostructure Ni

Язык: Английский

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Precise synthesis of dual atom sites for electrocatalysis

Nano Research, Год журнала: 2024, Номер unknown

Опубликована: Сен. 17, 2024

Язык: Английский

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Asymmetric charge distribution boosts hydrogen evolution performance in two‐dimensional MoO₂/MoS₂ step heterostructure

Carbon Energy, Год журнала: 2025, Номер unknown

Опубликована: Янв. 3, 2025

Abstract Step heterostructures are predicted to hold a profound catalytic performance because of the rearranged electronic structure at their interface. However, limitations in morphology prepared by hydrothermal reactions or molten salt‐assisted strategies make it challenging directly assess charge distribution and evaluate single interface's hydrogen evolution reaction (HER) performance. Here, we two‐dimensional MoO 2 /MoS step with large specific surface area chemical vapor deposition method. Surface Kelvin probe force microscopy electrical transport measurement verified asymmetric By fabricating series micro on‐chip electrocatalytic devices, investigate HER for interface confirm that is essential superior We experimentally confirmed enhancement heterostructure attributed This work lays foundation designing highly efficient systems based on heterostructures.

Язык: Английский

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Unveiling OER bubble dynamics in alkaline electrolysis: Impacts on cell resistance

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 106, С. 138 - 145

Опубликована: Фев. 1, 2025

Язык: Английский

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Trifunctional Nature of Heteroatom (B, N, S, O)‐Doped Waste Diesel Soot: Turning Pollutants Into Potential Energy Catalysts for HER, OER, and ORR

Carbon Neutralization, Год журнала: 2025, Номер 4(2)

Опубликована: Фев. 12, 2025

ABSTRACT This study delves into the innovative use of multiheteroatom‐doped vehicle exhaust soot as a catalyst for oxygen reduction reactions (ORR) and hydrogen/oxygen evolution (OER/HER), presenting transformative approach in energy materials. The synergistic effects boron, nitrogen, oxygen, sulfur (B, N, O, S) heteroatom doping on carbon nanoparticles (CNPs) were explored thoroughly experimentally through density functional theory (DFT) modeling, revealing potential these materials tri‐purpose catalysts converting pollutants electrocatalysts. B‐CNPs had lowest overpotential (338 mV) at current 10 mA/cm 2 , whereas reaction kinetics B–N–S‐CNPs superior, they Tafel slope (83.09 mV/dec). Furthermore, all heteroatom‐doped CNPs perform better terms OER than pristine CNPs, are range 1.05–1.15 V (values deducted from theoretical 1.23 vs. RHE) . In ORR, highest limiting density, onset potential, half‐wave overpotential, which 1.70 0.86, 0.64 V, respectively. addition to experimental investigations, DFT simulations used calculate binding (BE), interaction (IE/ E ads ), HOMO‐LUMO band gap, charge transfer (CT), noncovalent (NCI) plot, QTAIM molecular graphs provided evocative outcomes expected. multifaceted integrates analyses, contributing comprehensive understanding catalytic soot.

Язык: Английский

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