Research progress of the porous membranes in alkaline water electrolysis for green hydrogen production

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159291 - 159291

Published: Jan. 1, 2025

Language: Английский

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Phase regulation of Ni(OH)2 nanosheets induced by W doping as self-supporting electrodes for boosted water electrolysis

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 1 - 10

Published: Jan. 4, 2025

Language: Английский

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Exploring Ni-Based Alkaline OER Catalysts: A Comprehensive Review of Structures, Performance, and In Situ Characterization Methods

DeCarbon, Journal Year: 2025, Volume and Issue: unknown, P. 100097 - 100097

Published: Jan. 1, 2025

Language: Английский

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NiFe‐Based Electrocatalysts for Alkaline Oxygen Evolution: Challenges, Strategies, and Advances Toward Industrial‐Scale Deployment

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 2, 2024

Abstract Developing high‐efficiency alkaline water splitting technology holds great promise in potentially revolutionizing the traditional petrochemical industry to a more sustainable hydrogen economy. Importantly, oxygen evolution reaction (OER) accompanied at anode is considered as critical bottleneck terms of both complicated mechanism and sluggish kinetics, requiring rational design OER electrocatalysts elucidate structure‐performance relationship reduce applied overpotential. As benchmarked non‐precious metal candidate, NiFe‐based have gained enormous attention due low‐cost, earth‐abundance, remarkable intrinsic activity, which are expected be implemented industrial splitting. In this contribution, comprehensive overview provided, starting with fundamental mechanisms, evaluation metrics, synthetic protocols. Subsequently, basic principles corresponding regulatory strategies summarized following sequence substrate‐catalyst‐electrolyte efficient robust toward industrial‐scale deployment. Perspectives on remaining challenges instructive opportunities booming field finally discussed.

Language: Английский

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Coordination Stabilization of Fe by Porphyrin‐Intercalated NiFe‐LDH Under Industrial‐Level Alkaline Conditions for Long‐Term Electrocatalytic Water Oxidation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract The durable and economic electrocatalysts with high current density under industrial alkaline conditions are critical for advancing the production of hydrogen energy by water electrolysis. highly electrolyte exacerbates Fe dissolution NiFe layered double hydroxide (NiFe‐LDH), leading to dramatic degradation stability activity. NiFe‐LDH intercalated Tetrakis(4‐carboxyphenyl)porphyrin (TCPP) (NiFe‐TCPP), 1,4,7,10‐Tetraazacyclododecane‐1,4,7,10‐tetraacetic acid (DOTA) (NiFe‐DOTA) CO 3 2− (NiFe‐CO ) fabricated respectively electrocatalytic oxidation conditions. In 10 m KOH, compared NiFe‐DOTA (335.0 mV) NiFe‐CO (499.2 mV), resultant NiFe‐TCPP exhibits lowest overpotentials 290.2 mV at 1000 mA cm −2 . also operates continuously h 500 near‐zero attenuation. theoretical experimental studies reveal that strong coordination between conjugated carboxylate ligand TCPP laminate inhibits leaching increasing barriers 4.29 eV improving self‐healing ability, thus enhancing stability. Furthermore, charge redistribution induced optimizes d‐band centers (‐2.81 eV) decreases reaction (1.47 eV), thereby catalytic

Language: Английский

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Asymmetric Microenvironment Tailoring Strategies of Atomically Dispersed Dual‐Site Catalysts for Oxygen Reduction and CO₂ Reduction Reactions

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(41)

Published: Aug. 17, 2024

Dual-atom catalysts (DACs) with atomically dispersed dual-sites, as an extension of single-atom (SACs), have recently become a new hot topic in heterogeneous catalysis due to their maximized atom efficiency and dual-site diverse synergy, because the synergistic diversity dual-sites achieved by asymmetric microenvironment tailoring can efficiently boost catalytic activity optimizing electronic structure DACs. Here, this work first summarizes frequently-used experimental synthesis characterization methods Then, four mechanisms (cascade mechanism, assistance co-adsorption mechanism bifunction mechanism) key modulating (active site strategy, transverse/axial-modification engineering, distance engineering strain engineering) are elaborated comprehensively. The emphasis is placed on effects DACs oxygen/carbon dioxide reduction reaction. Finally, some perspectives outlooks also addressed. In short, review useful strategy speed up high-performance electrocatalysts for different reactions.

Language: Английский

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Strategies to maximize the oxygen evolution reaction in layered double hydroxides by electronic defect engineering

eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100380 - 100380

Published: Feb. 1, 2025

Language: Английский

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A Core–Shell Nanocomposite of Borate Anion-Intercalated NiCoFe-LDH Nanoflakes/Co-BNC Nanorods for Efficient Electrocatalytic Oxygen Evolution

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

Published: Feb. 26, 2025

Language: Английский

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Ions‐Migration‐Mediated Structural Stabilization in NiFe (Oxy)Hydroxides for Durable Alkaline Water Electrolysis

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

Published: April 16, 2025

Abstract Elevating iron‐involved sites in NiFe (oxy)hydroxides significantly accelerates oxygen evolution reaction (OER) kinetics but often sacrifices stability due to extensive metal ablation during industrial electrolysis. Here, an ions migration‐induced stabilization strategy is introduced explore robust catalysts for OER. The present approach involving cathodic polarization of Fe‐rich NiFe‐layered double hydroxides (LDH) facilitates selective substitution Ni with Fe cations and deep oxyanions OH ‐ , leading decreased layer thickness, enriched sites, aggravated lattice distortion reorganized NiFe‐LDH (R‐NiFe‐LDH). Correspondingly, R‐NiFe‐LDH fully transforms into γ‐(NiFe)OOH retained nanosheet morphology, reduced distortions, dramatically inhibited dissolution prolonged It achieves exceptional durability at 500 mA cm −2 retaining ≈90% over 5 days, substantially outperforming pristine (50% loss). Over 2 months, delivers only a 70 mV overpotential increase, whereas decays by 140 just 75 h. An anion exchange membrane water electrolyzer applying as both electrodes exhibit zero decay 1000 100 h, compared rate 3.6 h −1 the counterpart. This work showcases straightforward engineering atomic arrangements toward

Language: Английский

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Nb Doping Induced the Formation of Protective Layer to Improve the Stability of Fe‐Ni₃S₂ for Seawater Electrolysis

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 9, 2024

Abstract The seawater electrolysis to produce hydrogen is a significant topic on alleviating the energy crisis. Here, Fe, Nb‐Ni 3 S 2 catalyst prepared by metal‐doping strategy, and it shows high oxygen evolution reaction (OER) activity in alkaline medium, only needs 1.491 V deliver current density of 100 mA cm −2 simulated seawater. Using as bifunctional catalyst, two‐electrode electrolyzer requires voltage 1.751 (without impedance compensation) drive 50 , can run over 150 h stably Importantly, In situ Raman test demonstrates that outstanding performance ascribed formed sulfate protective layer induced Nb doping, which effectively inhibit corrosion chloride ion, while absent for Fe‐Ni . stable operation under industrial further confirms stability improvement mechanism forming layer. short, this study provides new strategy using dopants inducing formation enhance electrolysis.

Language: Английский

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