Water electrolysis for hydrogen production: from hybrid systems to self-powered/catalyzed devices

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 49 - 113

Published: Nov. 7, 2023

This perspective highlights recent advancements in innovative strategies to provide valuable insights into the potential for energy-saving hydrogen production through water electrolysis.

Language: Английский

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Advanced electrocatalysts with unusual active sites for electrochemical water splitting

InfoMat, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 27, 2023

Abstract Electrochemical water splitting represents a promising technology for green hydrogen production. To design advanced electrocatalysts, it is crucial to identify their active sites and interpret the relationship between structures performance. Materials extensively studied as electrocatalysts include noble‐metal‐based (e.g., Ru, Ir, Pt) non‐noble‐metal‐based 3d transition metals) compounds. Recently, advancements in characterization techniques theoretical calculations have revealed novel unusual sites. The present review highlights latest achievements discovery identification of various unconventional electrochemical splitting, with focus on state‐of‐the‐art strategies determining true establishing structure–activity relationships. Furthermore, we discuss remaining challenges future perspectives development next‐generation By presenting fresh perspective reaction involved this aims provide valuable guidance study industrial applications. image

Language: Английский

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Pt single atom captured by oxygen vacancy-rich NiCo layered double hydroxides for coupling hydrogen evolution with selective oxidation of glycerol to formate

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122617 - 122617

Published: March 11, 2023

Language: Английский

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Oxygenate-induced structural evolution of high-entropy electrocatalysts for multifunctional alcohol electrooxidation integrated with hydrogen production

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(30)

Published: July 16, 2024

High-entropy compounds have been emerging as promising candidates for electrolysis, yet their controllable electrosynthesis strategy remains a formidable challenge because of the ambiguous ionic interaction and codeposition mechanism. Herein, we report oxygenates directionally induced electrodeposition to construct high-entropy materials with amorphous features, on which structural evolution from phosphide oxide is confirmed by introducing vanadate, thus realizing simultaneous optimization composition structure. The representative P-CoNiMnWVO x shows excellent bifunctional catalytic performance toward alkaline hydrogen reaction ethanol oxidation (EOR), small potentials −168 mV 1.38 V at 100 mA cm −2 , respectively. In situ spectroscopy illustrates that electrochemical reconstruction induces abundant Co–O species main active EOR follows conversion pathway C 2 product. Theoretical calculations reveal optimized electronic structure adsorption free energy intermediates thereby resulting in facilitated kinetic process. A membrane-free electrolyzer delivers both high Faradaic efficiencies acetate H over 95% superior stability at100 during 120 h electrolysis. addition, unique advantages endow multifunctional activity realize multipathway formate-coupled production.

Language: Английский

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Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)

Published: May 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.

Language: Английский

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Recent advances in hydrogen production coupled with alternative oxidation reactions

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 509, P. 215777 - 215777

Published: March 26, 2024

Language: Английский

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

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

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Lattice Strain and Charge Redistribution of Pt Cluster/Ir Metallene Heterostructure for Ethylene Glycol to Glycolic Acid Conversion Coupled with Hydrogen Production

Small, Journal Year: 2023, Volume and Issue: 20(1)

Published: Aug. 30, 2023

Abstract Upgrading overall water splitting (OWS) system and developing high‐performance electrocatalysts is an attractive way to the improve efficiency reduce consumption of hydrogen (H 2 ) production from electrolyzed water. Here, a Pt cluster/Ir metallene heterojunction structure (Pt/Ir hetero‐metallene) with unique Pt/Ir interface reported for conversion ethylene glycol (EG) glycolic acid (GA) coupled H production. With assistance oxidation (EGOR), Pt/Ir||Pt/Ir hetero‐metallene two‐electrode electrolysis exhibits lower cell voltage 0.36 V at 10 mA cm −2 . Furthermore, Faradaic EG GA as high 87%. The excellent performance this new heterostructure arise charge redistribution strain effects induced by Pt–Ir interactions between heterogeneous interfaces, well larger specific surface area more active sites due structure.

Language: Английский

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Unveiling anion induced surface reconstruction of perovskite oxide for efficient water oxidation

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122661 - 122661

Published: March 20, 2023

Language: Английский

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Facile synthesis of SmSe2 over multiwalled carbon nanotubes for efficient water-splitting applications

Journal of the Korean Ceramic Society, Journal Year: 2023, Volume and Issue: 61(1), P. 44 - 54

Published: Sept. 21, 2023

Language: Английский

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