Tungstate Intercalated NiFe Layered Double Hydroxide Enables Long‐Term Alkaline Seawater Oxidation

Small, Journal Year: 2024, Volume and Issue: 20(28)

Published: Feb. 16, 2024

Abstract Renewable electricity‐driven seawater splitting presents a green, effective, and promising strategy for building hydrogen (H 2 )‐based energy systems (e.g., storing wind power as H ), especially in many coastal cities. The abundance of Cl − seawater, however, will cause severe corrosion anode catalyst during the electrolysis, thus affect long‐term stability catalyst. Herein, oxidation performances NiFe layered double hydroxides (LDH), classic oxygen (O ) evolution material, can be boosted by employing tungstate (WO 4 2– intercalated guest. Notably, insertion WO 2− to LDH layers upgrades reaction kinetics selectivity, attaining higher current densities with ≈100% O generation efficiency alkaline seawater. Moreover, after 350 h test at 1000 mA cm −2 , only trace active chlorine detected electrolyte. Additionally, follows lattice mechanism on .

Language: Английский

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Impressive efficiency of zinc oxide-manganese oxide/MAX composite in two-electrode system for photovoltaic-electrolyzer water splitting

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 689, P. 133599 - 133599

Published: Feb. 28, 2024

Language: Английский

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Controlled synthesis of M-MnS/Ni3S2（M=Zr, Ce, Bi and V）nanoarrays on nickel foam for overall urea splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 88, P. 313 - 321

Published: Sept. 20, 2024

Language: Английский

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Recent advances in heteroatom-doped/hierarchically porous carbon materials: Synthesis, design and potential applications

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101408 - 101408

Published: Nov. 1, 2024

Language: Английский

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Controlled synthesis of Co–Ni3Se2/MoS2/Ni3S2 nanoarrays as robust electrocatalyst for urea and seawater oxidation reaction

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 88, P. 450 - 461

Published: Sept. 21, 2024

Language: Английский

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Arming Amorphous NiMoO₄ on Nickel Phosphide Enables Highly Stable Alkaline Seawater Oxidation

Small, Journal Year: 2024, Volume and Issue: 20(31)

Published: March 3, 2024

Abstract Seawater electrolysis holds tremendous promise for the generation of green hydrogen (H 2 ). However, system seawater‐to‐H faces significant hurdles, primarily due to corrosive effects chlorine compounds, which can cause severe anodic deterioration. Here, a nickel phosphide nanosheet array with amorphous NiMoO 4 layer on Ni foam (Ni P@NiMoO /NF) is reported as highly efficient and stable electrocatalyst oxygen evolution reaction (OER) in alkaline seawater. Such /NF requires overpotentials just 343 370 mV achieve industrial‐level current densities 500 1000 mA cm −2 , respectively, surpassing that P/NF (470 555 mV). Furthermore, it maintains consistent over h, improvement compared (120 h) Ni(OH) (65 h). Electrochemical situ Raman spectroscopy, stability testing, chloride extraction analysis reveal formed MoO 2− /PO 3− from during OER test electrode surface, thus effectively repelling Cl − hindering formation harmful ClO .

Language: Английский

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Strain Engineering of High-Entropy Oxides Enriches Highly Active Lattice Oxygen for Electrocatalytic Water Oxidation

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(5), P. 1739 - 1745

Published: April 2, 2024

Developing novel high-entropy oxide electrocatalysts for oxygen evolution is a promising strategy to accelerate the alkaline water electrolysis kinetics by optimizing reaction paths. Herein, we demonstrate high-strain senary (FeCoNiCrMnCu)3O4 electrocatalyst with remarkably increased highly active lattice oxygen, which follows lattice-oxygen-mediated mechanism instead of traditional adsorbate-evolution (OER). A supersmall overpotential 241.4 mV required obtain 10 mA cm–2 and considerable current retention rate 94.9% attained after continuously operating 72 h. The diffusion coefficient 1.97 × 10–14 cm2 s–1, 5.6 times larger than (FeCoNi)3O4, ensuring rapid replenishment during oxidation. OER activity surpasses those most reported spinel electrocatalysts. More impressively, assembled anion exchange membrane electrolyzer can deliver an industrial-level density 1.0 under cell voltage 1.79 V, exhibiting attractive application potential.

Language: Английский

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Enhancing the oxygen reduction reaction in microbial fuel cell by using NiFe-LDH@NiCo2S4@MWCNT as cathode catalyst

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 103, P. 589 - 596

Published: Jan. 21, 2025

Language: Английский

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Modulating Selectivity and Stability of the Direct Seawater Electrolysis for Sustainable Green Hydrogen Production

Materials Today Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 100089 - 100089

Published: Feb. 1, 2025

Language: Английский

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Spin configuration modulation of Co₃O₄ by Ru doping for boosting the overall water splitting and hydrazine oxidation reactions

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(5), P. 1381 - 1393

Published: Jan. 1, 2024

Co-based spinel oxides with unique crystal structures have been identified as a class of promising candidates for alkaline water oxidation catalysis in oxide structural families.

Language: Английский

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