Catalyst‐Anchored 3D Framework Electrodes: A Breakthrough in Large‐Scale Hydrogen Production

Particle & Particle Systems Characterization, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract The idea of grid‐scale hydrogen production by water electrolysis has been made possible developing catalyst‐anchored three‐dimensional (3D) foam‐based electrodes. Catalytic performance in and oxygen evolution reactions is improved incorporating catalyst 3D interlinked porous architecture, which enhances electrical conductivity speeds up the discharge gas bubbles. detailed study on role‐play frameworks energy generation explained this article. review also focuses recent development utilizing these substrates field electrochemistry. Furthermore, it imperative to enhance their compatibility with renewable systems high‐temperature for sustainable hydrogen. Therefore, briefly explores innovative design self‐supported framework electrodes using heterostructures doping techniques develop stable, durable, efficient electrocatalysts. These catalysts aim provide near‐zero overpotential, high selectivity, long‐term stability through electrolysis, paving way commercial‐scale green production. can emerge as a key technology

Language: Английский

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Synergistic Fe-Mn-Cu ternary alloys enhance bifunctional activity and stability for alkaline water splitting

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 19, 2025

Developing cost-effective, high-performance electrocatalysts for water splitting remains a critical challenge advancing renewable energy technologies. Herein, we present novel ternary alloy catalyst, 20Fe-80Mn-20Cu, designed and optimized hydrogen evolution (HER) oxygen reactions (OER). The synthesized via electrodeposition, demonstrates exceptional bifunctional activity stability, outperforming binary (20Fe-80Mn) benchmark electrodes, such as Pt DSA. Linear sweep voltammetry (LSV) revealed that 20Fe-80Mn-20Cu requires remarkably low overpotential (without iR drop correction) of 172 mV HER 147 OER to achieve current density 10 mA cm- 2, significantly surpassing the performance alloys bare substrates. Tafel slope analysis further confirmed catalytic efficiency, with values 53 dec- 1 56 OER. Electrochemical impedance spectroscopy (EIS) charge transfer resistance, highlighting alloy's excellent electron transport properties. Raman XRD investigations catalyst's unique structural compositional features, including extra crystallographic reflections indicating increased surface activity. Stability tests conducted at ± 250 2 over 4 days demonstrated durability, only 7% 5% (OER) drops. Post-stability characterizations, EDX, Mn Fe redistribution Cu enrichment on surface, well formation stable copper oxides under conditions. These findings establish promising candidate scalable splitting, offering an energy-saving potential up 5.5 V per cm2 electrode surface. This study increases our understanding alloy-based catalysts feasible approach efficient sustainable production.

Language: Английский

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Current Amplification Driven by Reversible Redox Cycling in a Thin-Layer Reactor Using Boron-Doped Diamond Electrodes

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Current amplification plays an essential role in electrochemistry by improving the productivity of electrochemical production industrial materials and enhancing sensitivity environmental biomedical sensing. Various approaches have been explored to enhance steady-state current, such as thin-layer reactors, microelectrodes, rotating-disk electrodes. Thin-layer reactors several advantages, including ability generate larger currents using bulk-sized electrodes simple fabrication processes. In this study, we developed a reactor boron-doped diamond (BDD) with interelectrode distance tens micrometers, which is comparable thickness diffusion layer. The use BDD enabled reversible redox cycling reactor, resulting more than 2-fold current compared conventional reactors. This effect was observed only when were used for both working counter electrodes, 200 μm below. Based on experimental results present propose novel concentration profile model reaction mechanism that cannot be explained models. involves three-step cycle: (1) consumption reduced species generation oxidized at electrode, (2) regeneration (3) resupply electrode. also demonstrated twice sensitivity, detection limit one-tenth those bulk-reactor based proposed model.

Language: Английский

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Application of ZrO2 and Ni modified carbon nanotube composites as bifunctional water electrolysis catalysts

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: unknown, P. 111731 - 111731

Published: Oct. 1, 2024

Language: Английский

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Rare-metal single atom catalysts for large scale hydrogen production under actual operating conditions

EES Catalysis, Journal Year: 2024, Volume and Issue: 3(1), P. 32 - 56

Published: Nov. 11, 2024

This review summarizes the research progress made in recent years rational design of RMSACs for large-scale hydrogen production under actual conditions, including high current density, seawater electrolysis and long term operation.

Language: Английский

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