Poly(Acid Yellow 17)-Modified CoFe-Layered Double Hydroxide Achieves Long-Term Alkaline Seawater Oxidation

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Seawater electrolysis powered by renewable energy is a promising technique for green hydrogen production. However, the high concentration of chloride ions (Cl–) and their derivatives in seawater can severely corrode anode catalyst, significantly challenging lifespan electrolyzers. Herein, we present poly(acid yellow 17) (PAY) layer-modified CoFe-layered double hydroxide nanoarrays on nickel foam (CoFe LDH@PAY/NF), which serves as an efficient stable electrocatalyst alkaline oxidation (ASO). PAY layer functions electrically conductive layer, enhances conductivity CoFe LDH/NF thus improves catalytic activity ASO. Moreover, sulfonic acid groups create negatively charged environment surface LDH/NF, effectively repelling Cl–, while chlorine atoms form Cl–-free protective surface. These two mechanisms work synergistically to stabilize process. Electrochemical test data indicate that LDH@PAY/NF achieves current density 1000 mA cm–2 at just 336 mV The demonstrated superb stability, exhibiting slight degradation after 800 h ASO under cm–2. This provides important guidance developing catalysts resistant Cl– corrosion during

Language: Английский

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Superhydrophilic S‐NiFe LDH by Room Temperature Synthesis for Enhanced Alkaline Water/Seawater Oxidation at Large Current Densities

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Abstract Developing high‐performance oxygen evolution reaction (OER) electrocatalysts that can operate stably at large current densities in seawater plays a crucial role enabling large‐scale hydrogen production, however, it remains significant challenge. Herein, sulfur‐doped NiFe layered double hydroxide nanosheet (S‐NiFe LDH) grown on 3D porous nickel foam skeleton is synthesized through electrochemical deposition and ion‐exchange strategies room temperature as high‐performance, highly selective, durable OER electrocatalyst for electrolysis density. The incorporation of S enhance the conductivity, promote structural reconstruction to form active oxyhydroxides, well improve anti‐corrosion ability chloride ions. Furthermore, due its unique self‐supporting structure superhydrophilicity, which provide abundant sites efficient bubble release, optimized demands minimal overpotential 278 299 mV generate 1000 mA cm −2 alkaline freshwater/seawater, respectively, confirming excellent activity. Meanwhile, also demonstrates exceptional stability both media, maintains stable performance duration 200 h 500 . present work offers an strategy innovative viewpoint developing electrolysis.

Language: Английский

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Synergetic engineering of Zeolitic Imidazolate framework for efficient oxygen evolution reaction

Emergent Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Language: Английский

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Tailored Heterogeneous Catalysts via Space‐Confined Engineering for Efficient Electrocatalytic Oxygen Evolution

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Abstract Enhancing the intrinsic activity and number of catalytic sites is crucial in developing high‐performing robust electrocatalysts. Reductionism provides a material design concept that progresses from atoms to phases then phase sequences. Herein, well‐recognized high‐active (CoFe)Se 2 multi‐site (CoFe)─N─C are carefully selected creatively combined by space‐confined selenization, resulting @(CoFe)─N─C heterogeneous nanocatalyst. This simultaneously yields “better” “more” active enable stronger reaction kinetics with low overpotential 238 mV at 10 mA cm −2 for oxygen evolution reaction. The surprisingly remained almost unchanged after an ultra‐long 500 h continuous ideal combination effectively optimizes absorption capacity alters rate‐determining step *O→*OOH *OH→*O. work demonstrates principles reductionism confined engineering, opening promising avenue designing constructing efficient multi‐phase nanomaterials.

Language: Английский

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Constructing NiCo-hydroxide/Ni Mott-Schottky heterostructure electrocatalyst for enhanced alkaline hydrogen evolution reaction by inducing interfacial electron redistribution

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 688, P. 1 - 10

Published: Feb. 15, 2025

Language: Английский

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A hierarchical NiPOx@NiFe LDH nanoarray for durable seawater oxidation

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 708 - 714

Published: Feb. 17, 2025

Language: Английский

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Tungstate intercalated Mg-Al layered double hydroxide and its derived mixed metal oxide: preparation, characterization, and investigation of optical, electrical, and dielectric properties

Clays and Clay Minerals, Journal Year: 2025, Volume and Issue: 73

Published: Jan. 1, 2025

Language: Английский

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Innovations in seawater electrolysis: From fundamental challenges to practical applications

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 122, P. 289 - 331

Published: April 1, 2025

Language: Английский

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POM-Intercalated NiFe-LDH as Enhanced OER Catalyst for Highly Efficient and Durable Water Electrolysis at Ampere-Scale Current Densities

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 6486 - 6496

Published: April 6, 2025

Language: Английский

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Interlocking Fe3C-Mo2C interface engineering in carbon nanofibers for high-efficiency oxygen evolution catalysis under simulated seawater conditions

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180297 - 180297

Published: April 1, 2025

Language: Английский

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