Long‐term Durability of Seawater Electrolysis for Hydrogen: From Catalysts to Systems

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 29, 2024

Abstract Direct electrochemical seawater splitting is a renewable, scalable, and potentially economic approach for green hydrogen production in environments where ultra‐pure water not readily available. However, issues related to low durability caused by complex ions pose great challenges its industrialization. In this review, mechanistic analysis of electrolytic discussed. We critically analyze the development electrolysis identify at both anode cathode. Particular emphasis given elucidating rational strategies designing electrocatalysts/electrodes/interfaces with long lifetimes realistic including inducing passivating anion layers, preferential OH − adsorption, employing anti‐corrosion materials, fabricating protective immobilizing Cl on surface electrocatalysts, tailoring adsorption sites, inhibition binding Mg 2+ Ca , hydroxide precipitation adherence, co‐electrosynthesis nano‐sized hydroxides. Synthesis methods electrocatalysts/electrodes innovations electrolyzer are also Furthermore, prospects developing technologies clean generation summarized. found that researchers have rethought role ions, as well more attention cathodic reaction electrolyzers, which conducive accelerate commercialization electrolysis.

Language: Английский

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Molecular Weight Engineering Modulates Lignin‐Metal Supramolecular Framework to Construct Carbon‐Coated CoRu Alloy for Effective Overall Water Splitting

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

Published: Feb. 25, 2025

Abstract To overcome the challenges of low catalytic activity and instability, a molecular weight engineering strategy coupled with oxidative ammonolysis is developed to synthesize CoRu‐based alloy catalysts distinct morphologies properties from biorefinery lignin. This approach effectively modulates intrinsic active sites exposes unsaturated nitrogen‐oxygen structures, thereby tailoring morphology defect structure carbon layers in catalysts. The as‐synthesized CoRu lignin precursors varying weights are designated as CoRu@OALC‐EtOAC, CoRu@OALC‐EtOH, CoRu@OALC‐Residual. featuring defect‐rich graphitic carbon‐coated structure, exhibited exceptional overall water‐splitting performance (1.48 V at 10 mA cm −2 ), significantly surpassing Pt/C || Ru/C (1.58 ). In contrast, CoRu@OALC‐Residual, its amorphous demonstrated remarkable stability (350 h 100 vastly outperforming (6 In‐situ Raman spectroscopy DFT calculations revealed that adsorb * H intermediates, accelerating process. strong adsorption also induces layer rearrangement, leading dissolution oxidation metal particles. provides universal method for biomass‐derived catalysts, establishing direct relationship between weight, catalyst morphology, electrocatalytic performance.

Language: Английский

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Tree-like hierarchical porous anode catalyst layer for efficient proton exchange membrane water electrolyzer by optimization of transportation

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 123, P. 231 - 237

Published: April 1, 2025

Language: Английский

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4d-Metal Ion Ru³⁺-Incorporation in Prussian Blue Analogue-Derived Anodic NiFe(O)OH and Cathodic NiFe(OH)₂ Nanosheets Promotes Electrochemical Seawater Splitting

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(13), P. 15754 - 15762

Published: July 3, 2024

Electrochemical seawater splitting is a potential approach to producing H2 and O2. As contains different cations anions, the direct electrochemical of suffers from various challenges like chlorine evolution, corrosion electrodes, poor stability for catalysts. Herein, we have demonstrated incorporation 4d-metal ion Ru3+ in Prussian blue analogue-derived Ru–NiFe(O)OH (at anode) Ru–NiFe(OH)2 cathode) nanosheets splitting. The introduction into active catalysts modulated electronic structure improve cell voltage, reaction kinetics, In real seawater, anodically reconstructed reached 50 mA cm–2 current density at 260 mV overpotential oxygen while cathode attained −50 hydrogen evolution only an 83 overpotential. coupling as anode cathode, respectively, produced voltage 1.58 V overall splitting, outperforming RuO2∥Pt/C catalyst. Moreover, 100 h was also achieved

Language: Английский

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Long‐term Durability of Seawater Electrolysis for Hydrogen: From Catalysts to Systems

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(47)

Published: Aug. 29, 2024

Abstract Direct electrochemical seawater splitting is a renewable, scalable, and potentially economic approach for green hydrogen production in environments where ultra‐pure water not readily available. However, issues related to low durability caused by complex ions pose great challenges its industrialization. In this review, mechanistic analysis of electrolytic discussed. We critically analyze the development electrolysis identify at both anode cathode. Particular emphasis given elucidating rational strategies designing electrocatalysts/electrodes/interfaces with long lifetimes realistic including inducing passivating anion layers, preferential OH − adsorption, employing anti‐corrosion materials, fabricating protective immobilizing Cl on surface electrocatalysts, tailoring adsorption sites, inhibition binding Mg 2+ Ca , hydroxide precipitation adherence, co‐electrosynthesis nano‐sized hydroxides. Synthesis methods electrocatalysts/electrodes innovations electrolyzer are also Furthermore, prospects developing technologies clean generation summarized. found that researchers have rethought role ions, as well more attention cathodic reaction electrolyzers, which conducive accelerate commercialization electrolysis.

Language: Английский

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Surface S-Doped Nanostructured RuO₂ and Its Anion Passivating Effect for Efficient Overall Seawater Splitting

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Electrolysis of seawater for hydrogen (H2) production to harvest clean energy is an appealing approach. In this context, there urgent need catalysts with high activity and durability. RuO2 electrocatalysts have shown efficient in the oxygen evolution reactions (HER OER), but they still suffer from poor stability. Herein, surface S-doped nanostructured (S-RuO2) rationally fabricated overall splitting. Doping S enhances (overpotentials 25 mV HER 243 long-term durability (1000 h at 100 mA cm–2), achieves nearly 100% Faraday efficiency (FE). Moreover, S-RuO2-based anion exchange membrane electrolyzer requires 2.01 V reach 1.0 A cm–2 under demanding industrial conditions. Experimental analysis theoretical calculations indicate that introduction could lower valence state Ru, thereby conferring enhanced Furthermore, S-RuO2 electrocatalyst highly protected by surface, which repels Cl– alkaline seawater. This investigation presents a feasible strategy designing RuO2-based splitting both performance good resistance anodic corrosion.

Language: Английский

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Achievements, challenges and opportunities in hydrogen production from water/seawater splitting using boron-based materials

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

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Sustainability assessment of seawater splitting: Prospects, challenges, and future directions

EcoEnergy, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract Seawater splitting is one of the desirable techniques for producing green hydrogen from vast natural resource. Several reports about designing and fabricating efficient electrocatalysts to boost oxygen evolution reaction have been published. However, they mainly focus on electrodes, electrocatalysts, cost, system stability. This article presents an overview seawater by highlighting most challenging issues that complicate electrolysis, such as durability, guide future research in this important area. The strategy launch life cycle assessments described evaluate short long‐term impacts. Finally, current challenges prospective solutions are discussed.

Language: Английский

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Design strategies of electrocatalyst for improving durability and selectivity of seawater splitting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160362 - 160362

Published: Feb. 1, 2025

Language: Английский

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Bio‐inspired In Situ Tuning of the Hydrophobic Environment Around Catalytically Active Organic Ligand‐Stabilized Ruthenium Nanoparticles

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

Published: Feb. 22, 2025

Abstract The organic ligand environment surrounding enzymatic and homogeneous catalytic active sites often determines activity. Ruthenium nanoparticles, ≤1 nm in diameter, are synthesized using monodentate thiol, phosphine, bidentate bisphosphine ligands. Even though some of the ruthenium surface is blocked by ligands, activity still observed for CO oxidation H 2 O decomposition. All three ligand‐stabilized nanoparticles have similar rates; however, bisphosphine‐stabilized Ru approximately 2.5 times less than monothiol‐stabilized monophosphine‐stabilized It that modulated situ during nanoparticle synthesis via partial as confirmed 31 P NMR measurements. We hypothesize bisphosphine‐bound consist a core with ligands bound manner where other atom oxidized not to leading thicker hydrophobic layer around nanoparticles. increase hydrophobicity contact angle zeta potential decomposition rates known decrease increasing hydrophobicity, this work illustrates pathway ligand‐bound metallic

Language: Английский

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