Perovskite oxides as electrocatalysts for water electrolysis: From crystalline to amorphous

Carbon Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 2, 2024

Abstract Crystalline perovskite oxides are regarded as promising electrocatalysts for water electrolysis, particularly anodic oxygen evolution reactions, owing to their low cost and high intrinsic activity. Perovskite with noncrystalline or amorphous characteristics also exhibit electrocatalytic performance toward electrochemical splitting. In this review, a fundamental understanding of the advantages crystalline, noncrystalline, is presented. Subsequently, recent progress in development advanced electrolysis by engineering breaking crystallinity reviewed, special focus on underlying structure–activity relationships. Finally, remaining challenges unsolved issues presented, an outlook briefly proposed future exploration next‐generation water‐splitting based oxides.

Language: Английский

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Carbon-based electrocatalysts for hydrogen evolution reaction

Energy Conversion and Management X, Journal Year: 2025, Volume and Issue: unknown, P. 100892 - 100892

Published: Jan. 1, 2025

Language: Английский

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Four-functional iron/copper sulfide heterostructure for alkaline hybrid zinc batteries and water splitting

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 457, P. 141357 - 141357

Published: Jan. 7, 2023

Language: Английский

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Sr-deficient medium-entropy Sr1-xCo0.5Fe0.2Ti0.1Ta0.1Nb0.1O3-δ cathodes with high Cr tolerance for solid oxide fuel cells

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147665 - 147665

Published: Nov. 24, 2023

Language: Английский

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Current Progress of Mo‐Based Metal Organic Frameworks Derived Electrocatalysts for Hydrogen Evolution Reaction

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

Published: Aug. 30, 2023

Abstract As an important half‐reaction for electrochemical water splitting, electrocatalytic hydrogen evolution reaction suffers from sluggish kinetics, and it is still urgent to search high efficiency non‐platinum‐based electrocatalysts. Mo‐based catalysts such as Mo 2 C, MoO , MoP, MoS MoN x have emerged promising alternatives Pt/C owing their similar electronic structure with Pt abundant reserve of Mo. On the other hand, due adjustable topology, porosity, nanostructure metal organic frameworks (MOFs), MOFs are extensively used precursors prepare nano‐electrocatalysts. In this review, first time, progress Mo‐MOFs‐derived electrocatalysts summarized. The preparation method, structures, catalytic performance illustrated based on types derived including . Especially, commonly strategies improve heteroatoms doping, constructing heterogeneous structure, composited noble discussed. Moreover, opportunities challenges in area proposed guide designment development MOF

Language: Английский

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Cu nanoclusters activating ultrafine Fe3N nanoparticles via the Mott-Schottky effect for rechargeable zinc-air batteries

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 326, P. 122415 - 122415

Published: Jan. 25, 2023

Language: Английский

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Heterostructured Ultrathin Two-Dimensional Co-FeOOH Nanosheets@1D Ir-Co(OH)F Nanorods for Efficient Electrocatalytic Water Splitting

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(13), P. 16702 - 16713

Published: March 27, 2023

It is highly desirable to develop high-performance and robust electrocatalysts for overall water splitting, as the existing exhibit poor catalytic performance toward hydrogen oxygen evolution reactions (HER OER) in same electrolytes, resulting high cost, low energy conversion efficiency, complicated operating procedures. Herein, a heterostructured electrocatalyst realized by growing Co-ZIF-67-derived 2D Co-doped FeOOH on 1D Ir-doped Co(OH)F nanorods, denoted Co-FeOOH@Ir-Co(OH)F. The Ir-doping couples with synergy between Co-FeOOH Ir-Co(OH)F effectively modulate electronic structures induce defect-enriched interfaces. This bestows Co-FeOOH@Ir-Co(OH)F abundant exposed active sites, accelerated reaction kinetics, improved charge transfer abilities, optimized adsorption energies of intermediates, which ultimately boost bifunctional activity. Consequently, exhibits overpotentials 192/231/251 38/83/111 mV at current densities 10/100/250 mA cm-2 OER HER 1.0 M KOH electrolyte, respectively. When used cell voltages 1.48/1.60/1.67 V are required cm-2. Furthermore, it possesses outstanding long-term stability OER, HER, splitting. Our study provides promising way prepare advanced alkaline

Language: Английский

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Unveiling the electron configuration‐dependent oxygen evolution activity of 2D porous Sr‐substituted LaFeO₃ perovskite through microwave shock

Carbon Neutralization, Journal Year: 2023, Volume and Issue: 2(6), P. 709 - 720

Published: Oct. 17, 2023

Abstract Developing an efficient and stable oxygen evolution reaction (OER) catalyst is beneficial in various energy conversion storage applications for achieving the “Carbon Neutrality” goal. Among iron‐based perovskite oxides (AFeO 3 ), LaFeO stands out as a preferred electrocatalytic OER due to its exceptional selectivity bonding at A‐site. The introduction of A‐site substitution controlled morphological engineering structures has proven effective enhancing electrical conductivity intrinsic catalytic activity. Nevertheless, conventional approach often involves prolonged high‐temperature calcination, leading agglomeration nanostructures, particularly two‐dimensional (2D) porous configurations. Herein, we introduce novel method synthesizing 2D with Sr using microwave shock. This technique capitalizes on benefits transient heating cooling, enabling simultaneous construction morphology precise regulation one step. By conducting theoretical simulations electron configuration analysis crystal structure, unveil impact activity . synthesized La 0.2 0.8 FeO (LSFO‐8) exhibits overpotential 339 mV 10 mA cm −2 small Tafel slope 56.84 dec −1 alkaline electrolyte. investigation provides fresh perspective design electronic highly active materials.

Language: Английский

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Mixed metal oxides in catalytic ammonia cracking process for green hydrogen production: A review

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 63, P. 828 - 843

Published: March 22, 2024

Hydrogen, a versatile energy carrier, is promising alternative to replace the environmentally harmful and unsustainable use of fossil fuels. This much-touted fuel future may however have pitfalls, such as issues associated with hydrogen production, storage, distribution. Hydrogen storage distribution are concerned various technical, environmental safety issues. Indirect methods – in solid-state materials, ammonia, methanol/ethanol recently being considered by academic industry parties. Ammonia (NH3) can be carbon-free carrier high density, established transportation network, contents flexibility. production from NH3 decomposition requires catalyst/support metal oxides. In binary oxides like perovskites spinels, their unique morphologies structural flexibility enable apply defined control over reaction profile through detailed engineering material design. The focus this study conduct comprehensive review on existing emerging mixed catalysts used process production. activity oxide critically assessed, resulting performances discussed detail. Furthermore, covers challenges catalytic cracking process.

Language: Английский

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Copper oxide nanofibers obtained by solution blow spinning as catalysts for oxygen evolution reaction

Ceramics International, Journal Year: 2024, Volume and Issue: 50(8), P. 13034 - 13045

Published: Jan. 18, 2024

Language: Английский

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