Graphitic Carbon Nitride-Supported Layered Double Hydroxides (GCN@FeMg-LDH) for Efficient Water Splitting and Energy Harvesting

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

The advancement of highly efficient and cost-effective electrocatalysts for electrochemical water splitting, along with the development triboelectric nanogenerators (TENGs), is crucial sustainable energy generation harvesting. In this study, a novel hybrid composite by integrating graphitic carbon nitride (GCN) an earth-abundant FeMg-layered double hydroxide (LDH) (GCN@FeMg-LDH) was synthesized hydrothermal approach. Under controlled conditions, optimized concentrations metal ions GCN, fabricated electrode, GCN@FeMg-LDH demonstrated remarkably low overpotentials 0.018 0.284 V 0.101 0.365 at 10 600 mA/cm2 toward hydrogen evolution (HER) oxygen (OER) reactions, respectively, in 1.0 M KOH. Furthermore, we leveraged potential to develop high-performance TENG suitable practical electronic applications. resulting GCN@FeMg-LDH-based device, sized 3 × 4 cm2, substantial current output 52 μA voltage 771 V. Notably, device exhibited instantaneous power 5780 μW exceptional stability, enduring over 15 000 cycles. Thus, study concludes that emerges as superior candidate applications splitting TENGs, exhibiting significant promise advancing clean technologies, addition lowering greenhouse gas emissions.

Language: Английский

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Electro-Activated Ni3s2-Nio Modified by Amorphous Nifeox as Superior Electrocatalyst for Oxygen Evolution Reaction

Published: Jan. 1, 2025

The electrochemical oxygen evolution reaction (OER) as a rapid control step in water splitting for hydrogen production can utilise FeNi-based catalysts to reduce the overpotential. In considering disparate effects of crystalline and amorphous phases on stability activity catalyst, amorphous/crystalline heterojunctions were formed by metal oxides employed catalysts. this work, NiFeOx-modified Ni3S2-NiO/NF* heterojunction nanosheets (NiFe@Ni3S2-NiO/NF*) with three-dimensional structural configuration successfully prepared through two-stage process involving hydrothermal electrical treatments. NiFe@Ni3S2-NiO/NF*, electrically activated in-stiu exhibit stable crystal structure regular morphology, which enhances catalytic facilitates exposure active sites. Meanwhile, nickel-iron modified electrodeposition methods robust bond substrate, coupled flexibility, low contact resistance high electrocatalytic activity. NiFe@Ni3S2-NiO/NF* electrode exhibits remarkable towards OER alkaline media, particularly at potential 1.49 V reach large current density 50 mA cm-2, along excellent long-term stability. These findings are significant importance providing novel insights design construction oxide

Language: Английский

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A “Two-Pronged” Strategy via Tungsten Doping and Heterostructure to Boost Hydrogen Evolution Reaction in pH-Universal Media

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

Published: April 8, 2025

Language: Английский

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Electro-activated Ni3S2-NiO Modified by Amorphous NiFeOx as Superior Electrocatalyst for Oxygen Evolution Reaction

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180453 - 180453

Published: April 1, 2025

Language: Английский

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Superhydrophilic V‐Doped CoP Nanoparticles@Cu₃P Nanotubes with Vacancy and Interface Engineering for Synergistically Enhanced Electrocatalytic Overall Water Splitting

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

Published: April 29, 2025

Abstract Synergistically optimizing electronic structure and exposing abundant active sites to significantly improve performance of transition metal‐based electrocatalysts is an urgent necessity remains a significant challenge. Herein, hybrid nanotubes array rich P‐vacancy V‐CoP@Cu 3 P in situ grown on copper foam (V ‐V‐CoP@Cu HNTAs/CF) fabricated for overall water splitting. The combined experimental theoretical calculations reveal that V doping‐induced vacancies lead the formation local electric field within V‐CoP heterojunction‐induced built‐in field, which can jointly accelerate electron transfer charge separation, thereby enhancing reaction kinetics. Moreover, nanotube not only increase electrochemical surface area offer superior mass transfer, but also possess superhydrophilic nature utilization efficiency electrode surfaces. Due these advantages, HNTAs/CF provide distinguished HER OER activity, by employing as bifunctional electrocatalysts, splitting device delivered current density 10 mA cm −2 at low voltage 1.46 maintained its activity without decay 200 h 1 m KOH electrolyte.

Language: Английский

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Laminar-Confined Co9S8 quantum dots within Layered Hydroxide Electrocatalyst for Alkaline Overall Water Splitting

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180978 - 180978

Published: May 1, 2025

Language: Английский

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