Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Год журнала: 2024, Номер 14(30)

Опубликована: Май 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Язык: Английский

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Unlocking Efficiency: Minimizing Energy Loss in Electrocatalysts for Water Splitting

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 25, 2024

Abstract Catalysts play a crucial role in water electrolysis by reducing the energy barriers for hydrogen and oxygen evolution reactions (HER OER). Research aims to enhance intrinsic activities of potential catalysts through material selection, microstructure design, various engineering techniques. However, consumption has often been overlooked due intricate interplay among catalyst microstructure, dimensionality, catalyst–electrolyte–gas dynamics, surface chemistry, electron transport within electrodes, transfer electrode components. Efficient development high‐current‐density applications is essential meet increasing demand green hydrogen. This involves transforming with high into electrodes capable sustaining current densities. review focuses on improvement strategies mass exchange, charge transfer, resistance decrease consumption. It bridge gap between laboratory‐developed, highly efficient industrial regarding structural catalyst‐electrode interplay, outlining roadmap hierarchically structured electrode‐based minimizing loss electrocatalysts splitting.

Язык: Английский

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Engineering MOF@LDH heterojunction with strong interfacial built-in electric field towards enhanced electrocatalytic water oxidation

Fuel, Год журнала: 2024, Номер 377, С. 132796 - 132796

Опубликована: Авг. 17, 2024

Язык: Английский

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Enhancing interfacial electron transfer through PANI electron bridge for tailoring dynamic reconstruction and achieving high-performance water oxidation

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 677, С. 158 - 166

Опубликована: Июль 30, 2024

Язык: Английский

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Solar-powered hydrogen production: Advancements, challenges, and the path to net-zero emissions

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 84, С. 549 - 579

Опубликована: Авг. 22, 2024

Язык: Английский

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Boosting energy-efficient hydrogen evolution by electronically modulating Ni nodes in a framework for methanol oxidation in fresh and seawater

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(43), С. 29978 - 29988

Опубликована: Янв. 1, 2024

An e-modulated Ni MOF prepared through Zn doping enhances the number of active sites for formation a catalytic Ni–OOH phase, thereby accelerating methanol oxidation at anode and boosting H 2 generation cathode.

Язык: Английский

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Modulating Built‐In Electric Field Via N‐Doped Carbon Dots for Robust Oxygen Evolution at Large Current Density

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Constructing a built-in electric field (BIEF) within heterostructures has emerged as compelling strategy for advancing electrocatalytic oxygen evolution reaction (OER) performance. Herein, the p-n type nanosheet array heterojunction Ni2P-NCDs-Co(OH)2-NF are successfully prepared. The variation in interaction affinity between nitrogen N-doped carbon dots (NCDs) and Ni/Co induces charge redistribution Co Ni Ni2P-NCDs-Co(OH)2-NF-3 heterostructure, thereby enhancing intensity of BIEF, facilitating electron transfer, markedly improving OER activity. optimized electrocatalyst, Ni2P-NCDs-Co(OH)2-NF-3, demonstrates remarkably low overpotential 389 mV at 500 mA cm-2, alongsides small Tafel slope 65 dec-1, expansive electrochemical active surface area (ECSA), impedance, outstanding stability exceeding 425 h Faradaic efficiency up to 96%. In situ Raman spectroscopy density functional theoretical (DFT) calculations elucidate mechanism, revealing that enhanced BIEF optimizes adsorption energy Co3+ OH- weakened desorption during reaction. work ponieeringly employed NCDs regulator effectively tuning achieving superior performance under large current density, thus charting new pathways development high-efficiency electrocatalysts.

Язык: Английский

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Constructing Built‐in‐Electric Field for Boosting Electrocatalytic Water Splitting

ChemSusChem, Год журнала: 2024, Номер unknown

Опубликована: Июнь 4, 2024

Abstract Electrocatalytic water splitting shows great potential for producing clean and green hydrogen, but it is hindered by slow reaction kinetics. Advanced electrocatalysts are needed to lower the energy barriers. The establishment of built‐in electric fields (BIEF) in heterointerfaces has been found be beneficial speeding up electron transfer, increasing electrical conductivity, adjusting local environment, optimizing chemisorption with intermediates. Engineering modifying BIEF heterojunctions offer significant opportunities enhance electronic properties catalysts, thus improving This comprehensive review focuses on latest advances engineering heterojunction catalysts efficient electrolysis. It highlights fundamentals, engineering, modification, characterization, application electrocatalytic splitting. also discusses challenges future prospects engineering. Overall, this provides a thorough examination next generation electrolysis devices.

Язык: Английский

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Multicomponent Interface and Electronic Structure Engineering in Ir-Doped CoMO₄–Co(OH)₂ (M = W and Mo) Enable Promoted Oxygen Evolution Reaction

Inorganic Chemistry, Год журнала: 2024, Номер 63(34), С. 16037 - 16046

Опубликована: Авг. 9, 2024

The core principles of multicomponent interface and electronic structure engineering are essential in designing high-performance catalysts for the oxygen evolution reaction (OER). However, combining these aspects within a catalyst is significant challenge. In this investigation, novel approach involving development hybrid Ir-doped CoMO4–Co(OH)2 (M = W Mo) hollow nanoboxes was introduced, enabling remarkably efficient water oxidation electrocatalysis. Constructed from ultrathin nanosheet-assembled nanoboxes, structures boast wealth active centers intermediate species, which turn enhance both charge transfer mass transport capabilities. Moreover, compelling synergistic effects arising interaction between CoMO4 Co(OH)2 significantly bolster OER electrocatalysis by facilitating electron transfer. introduction Ir atoms serves to strategically adjust structure, fine-tune its state, operate as electrocatalysis, thus diminishing overpotential. This configuration results Ir-CoWO4–Co(OH)2 Ir-CoMoO4–Co(OH)2 exhibiting impressively low overpotentials 252 261 mV, respectively, 10 mA cm–2. Utilized conjunction with Pt/C two-electrode system overall splitting, mere 1.53 V cell potential needed achieve desired cm–2 current density.

Язык: Английский

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Coupled electrocatalytic hydrogen production

Materials Science and Engineering R Reports, Год журнала: 2024, Номер 160, С. 100829 - 100829

Опубликована: Июль 26, 2024

Язык: Английский

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