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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Recent Advances and Perspectives on Coupled Water Electrolysis for Energy‐Saving Hydrogen Production

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Abstract Overall water splitting (OWS) to produce hydrogen has attracted large attention in recent years due its ecological‐friendliness and sustainability. However, the efficiency of OWS been forced by sluggish kinetics four‐electron oxygen evolution reaction (OER). The replacement OER alternative electrooxidation small molecules with more thermodynamically favorable potentials may fundamentally break limitation achieve production low energy consumption, which also be accompanied value‐added chemicals than or electrochemical degradation pollutants. This review critically assesses latest discoveries coupled various OWS, including alcohols, aldehydes, amides, urea, hydrazine, etc. Emphasis is placed on corresponding electrocatalyst design related mechanisms (e.g., dual hydrogenation N–N bond breaking hydrazine C═N regulation urea inhibit hazardous NCO − NO productions, etc.), along emerging reactions (electrooxidation tetrazoles, furazans, iodide, quinolines, ascorbic acid, sterol, trimethylamine, etc.). Some new decoupled electrolysis self‐powered systems are discussed detail. Finally, potential challenges prospects highlighted aid future research directions.

Язык: Английский

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Local Charge Modulation Induced the Formation of High‐Valent Nickel Sites for Enhanced Urea Electrolysis

Advanced Energy Materials, Год журнала: 2024, Номер 14(41)

Опубликована: Авг. 17, 2024

Abstract Ni‐based electrocatalysts are considered to be significantly promising candidates for electrocatalytic urea oxidation reaction (UOR). However, their UOR activity and stability severely enslaved by the inevitable Ni group self‐oxidation phenomenon. In this study, glassy state NiFe LDH with uniform Cu dopant (Cu‐NiFe LDH) a simple sol–gel strategy is successfully synthesized. When served as catalyst, Cu‐NiFe required 123 mV lower potential at both 10 100 mA cm −2 in comparison conventional anodic OER. It can also operate steadily more than 300 h . The in‐depth investigation reveals that incorporation optimize local electronic structure of species induce high‐valent sites. sites would act active center during proposed energetically favorable route, which directly reacts on without inducing formation NiOOH species, resulting boosted stability.

Язык: Английский

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Ru‐Doped Fe₂TiO₅ as a High‐Performance Electrocatalyst for Urea‐Assisted Water Splitting

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

The urea oxidation reaction (UOR), with its low thermodynamic potential, offers a promising alternative to the oxygen evolution (OER) for efficient hydrogen production. However, sluggish kinetics still demand development of an electrocatalyst. In this study, critical role Ru doping in Fe₂TiO₅ is demonstrated accelerate UOR kinetics. computational finding confirmed feasibility approach, guiding experimental synthesis Fe2-xRuxTiO5. Benefitting from surface properties and electronic structure, synthesized material exhibits superior performance potential 1.30 V at current density 10 mA cm-2 UOR, compared undoped Fe2TiO5 (1.40 V). Moreover, it demonstrates favourable Tafel slope 52 mV dec-1 maintains robust durability 72 h. As findings, enhanced activity can be attributed resulting structural distortion Fe site creation adsorption thereby enhancing via dual active center. This study not only broadens applications Fe2TiO5-based materials beyond their traditional as photocatalysts but also establishes them electrocatalysts underscoring versatility improved

Язык: Английский

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Development and experimental investigation of a new direct urea fuel cell

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 88, С. 1123 - 1137

Опубликована: Сен. 24, 2024

Язык: Английский

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Progress on electrochemical and photoelectrochemical urea and ammonia conversion from urine for sustainable wastewater treatment

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 362, С. 124718 - 124718

Опубликована: Окт. 20, 2024

Язык: Английский

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Efficient and Long-Term Stable Ni-Zn@Cu(OH)2 Core–Shell Nanorod Arrays for Electrocatalytic Oxidation of Methanol and Urea

Journal of Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 5, 2025

Язык: Английский

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Synthesis of high-entropy perovskite metal fluoride anode materials for lithium-ion batteries via a one-pot solution method

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 177458 - 177458

Опубликована: Ноя. 7, 2024

Язык: Английский

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Fluorinated catalysts for the oxygen evolution reaction: a comprehensive review of synthesis, structure, and performance

Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Fluorination has been proven to be an effective strategy boost catalysts' OER performance by significantly reducing overpotential and the Tafel slope while enhancing stability.

Язык: Английский

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