Interatomic interaction of 2D crumpled V2O5 nanosheets layered with Ni-MOF as a bifunctional electrocatalyst for overall water splitting and supercapacitor applications

Journal of Energy Storage, Год журнала: 2024, Номер 81, С. 110348 - 110348

Опубликована: Янв. 16, 2024

Язык: Английский

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Enhanced HER activity through FeAlO3 perovskite oxide incorporated with conducting polymer PANI

Inorganic Chemistry Communications, Год журнала: 2024, Номер unknown, С. 113609 - 113609

Опубликована: Ноя. 1, 2024

Язык: Английский

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Cooperative effects between NiMo alloy enable highly efficient for all-pH-value and alkaline seawater hydrogen evolution

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 358, С. 124388 - 124388

Опубликована: Июль 9, 2024

Язык: Английский

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In Situ Design of a Nanostructured Interface between NiMo and CuO Derived from Metal–Organic Framework for Enhanced Hydrogen Evolution in Alkaline Solutions

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(8), С. 10078 - 10092

Опубликована: Фев. 20, 2024

Hydrogen shows great promise as a carbon-neutral energy carrier that can significantly mitigate global challenges, offering sustainable solution. Exploring catalysts are highly efficient, cost-effective, and stable for the hydrogen evolution reaction (HER) holds crucial importance. For this, metal–organic framework (MOF) materials have demonstrated extensive applicability either heterogeneous catalyst or precursor. Herein, nanostructured interface between NiMo/CuO@C derived from Cu-MOF was designed developed on nickel foam (NF) competent HER electrocatalyst in alkaline media. The exhibited low overpotential of 85 mV at 10 mA cm–2 rivals Pt/C (83 @ cm–2). Moreover, catalyst's durability measured through chronopotentiometry constant current density −30, −100, −200 50 h each 1.0 M KOH. Such enhanced electrocatalytic performance could be ascribed to presence conductive C Cu species, facilitated electron transfer components because interface, abundant active sites result multiple oxidation states. existence an ionized oxygen vacancy (Ov) signal confirmed all heat-treated samples paramagnetic resonance (EPR) analysis. This revelation sheds light entrapment electrons various environments, primarily associated with underlying defect structures, particularly vacancies. These trapped play role augmenting conductivity, thereby contributing elevated performance.

Язык: Английский

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Unlocking efficient methanol electro-oxidation in alkaline medium with non-stoichiometric 3D sphere-like Cu3Mo2O9@CoMoO4 heterostructure

Materials Science in Semiconductor Processing, Год журнала: 2024, Номер 174, С. 108213 - 108213

Опубликована: Фев. 9, 2024

Язык: Английский

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Regulating the electronic structure of CoMoO₄via La doping for efficient and durable electrochemical water splitting reactions

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Metal molybdates (M′MoO 4 , M = Fe, Co, and Ni) are recognized as active catalysts for water-splitting reactions.

Язык: Английский

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Industrial-scale efficient alkaline water electrolysis achieved with sputtered NiFeV-oxide thin film electrodes for green hydrogen production

Journal of Materials Chemistry A, Год журнала: 2023, Номер 12(1), С. 460 - 474

Опубликована: Ноя. 22, 2023

To mitigate electrocatalyst peel-off under high current conditions, sputtering technology is employed to craft bifunctional films, specifically ternary NiFeV-oxide films with varied V compositions for enabling comprehensive alkaline water splitting in industrial applications.

Язык: Английский

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Highly active NiMo foam-based electrocatalysts for the hydrogen evolution reaction in alkaline media

Electrochimica Acta, Год журнала: 2024, Номер 479, С. 143881 - 143881

Опубликована: Фев. 2, 2024

The design of non-noble electrocatalysts is the foremost approach to overcome scarcity, and high cost benchmark catalysts applied hydrogen evolution reaction (HER) in alkaline media for green H2 generation. Nevertheless, electroactive arrays based on transition metals with an outstanding faradaic ionic performance HER are unusual, or their electrochemical properties not adequately scrutinized. In this sense, easy two-step route described improve catalytic commercial Ni foam electrodes. As first step, ultrasound-assisted chemical treatment allows obtaining regularly cracked catalysts. Subsequently, surface decorated NiMo-based nanostructures, consequently, active-site density increased, overpotential decreased raised. Regarding last, NiMo80/NiFA reports lowest 18 mV at 4 μA mbar−1, Heyrovsky mechanism as rate-determining step towards HER. differential mass spectrometry (DEMS) employed elucidate onset potential, kinetics, medium.

Язык: Английский

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Bridge‐Oxygen Bond: An Active Group for Energy Electrocatalysis

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Abstract Energy electrocatalytic reactions such as hydrogen evolution reaction, oxygen reduction nitrogen carbon etc., are important to solve the current energy shortage and increasing environmental problems. Developing novel efficient catalyts for these has become an essential urgent issue. Catalysts incorporating bridge‐oxygen bond have received attention due their superior conductivity stability, which favorable optimizing reaction mechanism improving kinetics. This paper provides a comprehensive review encompassing concept of bond, means characterization, activity in electrocatalysis effect on catalytic performance. Through this review, it is expected furnish valuable reference rational design catalysts featuring structure across diverse reactions.

Язык: Английский

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Progress in Perovskite Oxide Electrocatalysts for Efficient Hydrogen and Oxygen Evolution Reactions

Journal of Inorganic and Organometallic Polymers and Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Язык: Английский

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