Electrochemically treated AlCoCrFeNi high entropy alloy as a self-supporting electrode for overall water splitting

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 72, С. 209 - 219

Опубликована: Май 29, 2024

Язык: Английский

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Long-term stability for anion exchange membrane water electrolysis: recent development and future perspectives

Deleted Journal, Год журнала: 2025, Номер 5, С. 100024 - 100024

Опубликована: Янв. 9, 2025

Язык: Английский

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Iron phosphide nanoparticles anchored on 3D nitrogen-doped graphene as an efficient electrocatalysts for hydrogen evolution reaction in alkaline media

Materials Today Communications, Год журнала: 2024, Номер unknown, С. 110758 - 110758

Опубликована: Окт. 1, 2024

Язык: Английский

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A Proof‐of‐Principle Demonstration: Exploring the Effect of Anode Layer Microstructure on the Alkaline Oxygen Evolution Reaction

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Abstract This study explores the effect of nickel cobalt oxide (Ni‐Co‐O) anode layer microstructure on oxygen evolution reaction (OER). Four anodes with similar Ni‐Co‐O loadings and chemical characteristics but distinct morphologies are fabricated by ultrasonic spraying catalyst inks varying solvent composition (pure water versus a water‐ethanol mixture) drying temperatures (50 150 °C) (Ni) plates. Upon composition, particles in water‐based ink exhibited lower stability than water‐ethanol‐based ink, boosting particle connectivity layers. correlated mechanical strength layers, resulting reduced contact resistance enhanced activity. The second observation is that at 50 °C, surface morphology hill‐like islands higher roughness, while concave hemispherical shapes roughness observed. From 2D‐distribution data, it found wettability electrolyte. Roughness increased lyophobicity activity through more accessible active sites efficient bubble transport. work highlights how affects macroscopic properties, these turn can enhance or diminish performance OER compared to bare Ni, offering insights into knowledge‐based design

Язык: Английский

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Elucidating the Effect of the Catalyst Layer Morphology on the Growth and Detachment of Bubbles in Water Electrolysis via Lattice Boltzmann Modeling

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

The performance of water electrolysis is profoundly influenced by the behavior gas bubbles generated at electrode surface. In order to improve efficiency bubble transportation, various nanostructures for catalyst layer (CL), such as nanorods (NRs) or nanoparticles (NPs), have been proposed. However, there still a lack complete understanding about relationship between morphology and evolution, which has considerable impact on transport. This study examines effect growth detachment in employing Lattice Boltzmann (LB) model. three different morphologies, namely, nanorods, nanoparticles, hierarchical nanostructures, dynamics estimated. results suggest that characterized two factors: contact area electrochemically active surface area, varies diameter, time, and, subsequently, coverage. As result, energy influenced, aligned with experimental data show voltage differential 148 mV current density 0.65 A/cm2. highlights significance improving structure boost systems.

Язык: Английский

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Relationship between degradation mechanism and water electrolysis efficiency of electrodeposited nickel electrodes

npj Materials Degradation, Год журнала: 2025, Номер 9(1)

Опубликована: Март 13, 2025

Язык: Английский

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Quantifying bubble-induced diffusion resistance through real-time SAM-assisted YOLO high density bubble detection algorithm

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162422 - 162422

Опубликована: Апрель 1, 2025

Язык: Английский

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A molecular design strategy to enhance hydrogen evolution on platinum electrocatalysts

Nature Energy, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Язык: Английский

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Evaluation of Hydrogen Bubble Growth on a Platinum Microelectrode Under Varying Electrical Potential

Applied Sciences, Год журнала: 2025, Номер 15(8), С. 4107 - 4107

Опубликована: Апрель 8, 2025

Green hydrogen, produced via electrolysis using renewable energy, is a zero-emission fuel essential for the global transition to sustainable energy systems. Optimizing hydrogen production requires detailed understanding of bubble dynamics at cathode, which involves three key stages: nucleation, growth, and detachment. In this study, growth was investigated in custom-built cell with microelectrodes, combining high-speed imaging electrochemical measurements potentiostat. The results reveal distinct regimes governed by potential-dependent time exponent, captured through power law. Within evaluated range potentials, regions different departure behaviors were identified: (i) low potentials (2.0–2.6 V), bubbles depart without coalescing, (ii) transitional region (2.6–3.2 coalesce varying degrees before detachment, (iii) high (≥3.2 large, coalesced dominate. These findings highlight significant impact coalescence on behavior, affecting electrode coverage gas and, consequently, efficiency. Understanding these interactions crucial improving evolution efficiency mitigating bubble-induced mass transport limitations. contribute advancing performance, offering insights into optimizing operating conditions enhanced production.

Язык: Английский

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Synergistic effects of magnetic fields and flow velocity on hydrogen bubble dynamics in water electrolysis

Electrochemistry Communications, Год журнала: 2025, Номер unknown, С. 107918 - 107918

Опубликована: Апрель 1, 2025

Язык: Английский

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