Stabilizing NiFe sites by high-dispersity of nanosized and anionic Cr species toward durable seawater oxidation

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 5, 2024

Electrocatalytic H

Language: Английский

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Oxalate anions-intercalated NiFe layered double hydroxide as a highly active and stable electrocatalyst for alkaline seawater oxidation

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 662, P. 596 - 603

Published: Feb. 6, 2024

Language: Английский

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Enhancing electrochemical performance and corrosion resistance of nickel-based catalysts in seawater electrolysis: focusing on OER and HER

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(35), P. 23147 - 23178

Published: Jan. 1, 2024

Hydrogen production by electrochemical hydrogen evolution reaction (HER) using eco-friendly seawater electrolysis can help address the energy shortage.

Language: Английский

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Structural evolution and self-reconstruction of nickel hexacyanoferrate Prussian blue analogues for long-lasting ampere-current seawater oxidation

Nano Today, Journal Year: 2024, Volume and Issue: 58, P. 102454 - 102454

Published: Aug. 23, 2024

Language: Английский

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Innovations in Electrocatalysts, Hybrid Anodic Oxidation, Eelectrolyzers for Enhanced Direct Seawater Electrolysis

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 6897 - 6942

Published: Jan. 1, 2024

This review focuses on the latest developments in direct seawater electrolysis, specifically electrocatalysts, hybrid anodic oxidation, and electrolyzers, providing a glimpse into future of environmentally friendly hydrogen generation.

Language: Английский

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Ce‐Doping Rather Than CeO₂ Modification and Their Synergistic Effect: Promotion from Ce Species in the Electrocatalytic Oxidation of 5‐Hydroxymethylfurfural Over NiFe–LDH

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(38)

Published: July 11, 2024

Abstract Electrocatalytic oxidation of 5‐hydroxymethylfurfural (HMFOR) is an effective route to produce value‐added chemicals with low energy consumption. In this work, efficient electrocatalysts are prepared by varying the amount Ce doping and CeO 2 modification on NiFe layered double hydroxide (NiFe–LDH) nanosheets supported carbon cloth (CC). Through heterogeneous interface construction, electronic structure coordination chemistry NiFe–LDH greatly changed. Compared synergistic effect Ce‐doping modification, CC@NiFeCe(3%)‐LDH only show excellent charge transfer ability, higher HMF conversion (95.73%), 2,5‐furandicarboxylic acid (FDCA) selectivity (93.31%), Faraday efficiency (99.47%) at 1.44 V RHE . Density‐functional theory calculations X‐ray fine spectroscopy demonstrate that doping, compared their effects, significantly facilitates electron transport optimizes intermediate adsorption effectively lowering activation for transformation 5‐formyl‐2‐furancarboxylic (FFCA) encourage FFCA FDCA. Overall, work systemically investigates HMFOR behaviors CC@NiFe–LDH under synergetic effect, which provides some guidance development high‐performance performance.

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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Recent advances in NiFe layered double hydroxide electrocatalysts for seawater oxidation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1002, P. 175368 - 175368

Published: June 27, 2024

Language: Английский

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p–d Orbitals Coupling Heterosites of Ni₂P/NiFe‐LDH Interface Enable O─H Cleavage for Water Splitting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(40)

Published: Aug. 11, 2024

Abstract Electrocatalytic water splitting for hydrogen production still faces a bottleneck due to sluggish reactive kinetics and high energy barriers. Herein, p–d orbital coupling P–Fe heterosites are constructed at Ni 2 P–FeNi‐LDH interfaces enhance the O─H bond cleavage of reaction intermediates H O* OH* oxygen evolution (OER) (HER), respectively. The P/NiFe‐LDH heterostructure shows superior HER OER activities alkaline with overpotentials 230 270 mV 100 mA cm −2 , respectively, even exhibits activity electrocatalytic seawater splitting. interaction P 2p Fe 3d orbitals upshifts d‐band center downshifts p‐band P. This finding not only facilitates dissociation bonds in O promotes Volmer–Heyrovsky step HER, but also reduces barrier rate‐determining from transition. work proposes new approach constructing heterojunctions facilitate reduce electrocatalysis.

Language: Английский

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Non‐Noble‐Metal‐Based Electrocatalysts for Acidic Oxygen Evolution Reaction: Recent Progress, Challenges, and Perspectives

Small, Journal Year: 2024, Volume and Issue: 20(48)

Published: Aug. 25, 2024

Abstract The oxygen evolution reaction (OER) plays a pivotal role in diverse renewable energy storage and conversion technologies, including water electrolysis, electrochemical CO 2 reduction, nitrogen fixation, metal‐air batteries. Among various electrolysis techniques, proton exchange membrane (PEM)‐based devices offer numerous advantages, high current densities, exceptional chemical stability, excellent conductivity, high‐purity H . Nevertheless, the prohibitive cost associated with Ir/Ru‐based OER electrocatalysts poses significant barrier to broad‐scale application of PEM‐based splitting. Consequently, it is crucial advance development non‐noble metal catalysis substance acid‐activity thereby fostering their widespread integration into PEM electrolyzers (PEMWEs). In this review, comprehensive analysis acidic mechanism, encompassing adsorbate mechanism (AEM), lattice (LOM) oxide path (OPM) offered. Subsequently, systematic summary recently reported noble‐metal‐free catalysts transition metal‐based, carbon‐based other types provided. Additionally, compilation situ/operando characterization techniques provided, serving as invaluable tools for furnishing experimental evidence comprehend catalytic mechanism. Finally, present challenges future research directions concerning precious‐metal‐free are comprehensively summarized discussed review.

Language: Английский

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