Defect engineering in transition‐metal (Fe, Co, and Ni)‐based electrocatalysts for water splitting

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(6)

Published: Feb. 23, 2024

Abstract Electrocatalytic water splitting seems to be an efficient strategy deal with increasingly serious environmental problems and energy crises but still suffers from the lack of stable electrocatalysts. Designing practical electrocatalysts by introducing defect engineering, such as hybrid structure, surface vacancies, functional modification, structural distortions, is proven a dependable solution for fabricating high catalytic activities, robust stability, good practicability. This review overview some relevant reports about effects engineering on electrocatalytic performance In detail, types defects, preparation characterization methods, performances are presented, emphasizing introduced defects electronic structures optimization intermediates' adsorption throughout review. Finally, existing challenges personal perspectives possible strategies enhancing proposed. An in‐depth understanding will light way design high‐efficiency other applications.

Language: Английский

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Engineering MOF@LDH heterojunction with strong interfacial built-in electric field towards enhanced electrocatalytic water oxidation

Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132796 - 132796

Published: Aug. 17, 2024

Language: Английский

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A roadmap of MOFs derived porous carbon, oxides, chalcogenides, and phosphides of metals: Synthesis, properties, parameter modulation and their utilization as an electrode for Li/Na/K-ion batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110947 - 110947

Published: Feb. 22, 2024

Language: Английский

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Metallic Cu-incorporated NiFe layered double hydroxide nanosheets enabling energy-saving hydrogen generation from chlorine-free seawater electrolysis coupled with sulfion upcycling

Fuel, Journal Year: 2024, Volume and Issue: 367, P. 131506 - 131506

Published: March 19, 2024

Language: Английский

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Fe-Doped Ni/Co-Based Selenide Hierarchical Nanosheet Arrays as Self-Supporting Bifunctional Electrocatalysts for Overall Water Splitting

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(10), P. 11530 - 11540

Published: May 11, 2024

It is necessary to optimize the electrocatalytic activity of an electrocatalyst by means morphology and composition regulation. Herein, Fe-doped bimetallic selenide hierarchical nanosheet arrays grown on nickel foam (Fe-NiCoSe/NiCoSe/NF) are obtained for overall water splitting. The Fe-NiCoSe/NiCoSe/NF fabricated selenizing NiCoFe Prussian blue analogue (NiCoFe-PBA) growing a NiCo-layered double hydroxide (NiCo-LDH). Benefiting from arrays, synergistic effect selenides, as well electronic structure rearrangement caused Fe-doping, catalyst exhibits low overpotentials 120 mV hydrogen evolution reaction (HER) 199 oxygen (OER) at 10 mA·cm–2 in 1.0 M KOH. In addition, when used bifunctional splitting, requires cell voltage 1.93 V (1.82 V) reach 100 (50 mA·cm–2). Additionally, prolonged durability lasting 150 h mA·cm–2. This work provides reasonable idea designing nanostructured toward splitting regulating composition.

Language: Английский

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Facile engineering of metal–organic framework derived SnO2@NiO core–shell nanocomposites based gas sensor toward superior VOCs sensing performance

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157692 - 157692

Published: Nov. 1, 2024

Language: Английский

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Differentiated Modulating the Electronic Structure of NiFe@Ni/Fe‐MnOx via Phase Transformation Engineering to Synergy Promote Bifunctional Water Splitting Reactions

Small, Journal Year: 2025, Volume and Issue: 21(7)

Published: Jan. 7, 2025

Abstract Modulating electronic structure to balance the requirement of both hydrogen evolution reaction (HER) and oxygen (OER) is crucial for developing bifunctional catalysts. Herein, phase transformation engineering utilized separately regulate catalyst structure, designed NiFe@Ni/Fe‐MnOOH schottky heterojunction exhibits remarkable electrocatalytic activity with low overpotentials 19 230 mV at 10 mA cm −2 HER OER in 1M KOH, respectively. Meanwhile, an anion‐exchange membrane water electrolyzer employing as electrodes shows voltages 1.487/1.953 V 10/1000 , operating over 200 h 1000 . Combining theoretical calculations experiments reveal that can differentially active phases HER/OER. In HER, Ni/Fe‐MnOOH metallic NiFe act *OH *H acceptors respectively accelerates dissociation subsequent Heyrovsky/Tafel step. While OER, significant Jahn‐Teller effect Mn 3+ induces surface reconstruction from Ni/Fe‐MnO 2 The formative high value 4+ modify M‐O hybridization activate lattice mechanism, which pivotal breaking restriction volcanic relationship reducing overpotential. These findings provide valuable design guidelines high‐performance multi‐functional electrocatalysts via engineering.

Language: Английский

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Rational design of hollow cubic MnCoFe PBA-P for electrocatalytic oxygen evolution reaction

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 44, P. 102530 - 102530

Published: Jan. 18, 2025

Language: Английский

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High-valent metal molybdenum-doped NiFe LDH nanosheet for efficient oxygen evolution reaction

Journal of Electroanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 118996 - 118996

Published: Feb. 1, 2025

Language: Английский

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Challenges and potential of layered double hydroxides as electrocatalytic materials for hydrogen production from water: A review of recent advances and applications

Energy Nexus, Journal Year: 2025, Volume and Issue: unknown, P. 100399 - 100399

Published: Feb. 1, 2025

Language: Английский

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