Interfacial built‐in electric fields facilitating surface reconstruction in heterojunction electrocatalysts for boosting water oxidation and simulated seawater oxidation

Fuel, Journal Year: 2024, Volume and Issue: 369, P. 131716 - 131716

Published: April 17, 2024

Language: Английский

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Unique CoP Microflower Decorated with Phosphorous‐Enriched PtP₂ onto Nickel Foam with Interfacial Electronic Interactions to Boost Alkaline Water‐Splitting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(27)

Published: March 1, 2024

Abstract The development of stable and efficient electrocatalysts for overall freshwater/seawater water‐splitting has received significant attention. In this study, the fabrication electrocatalytic properties phosphorus‐enriched PtP 2 dispersed on CoP (PtP /CoP) HER OER in both alkaline fresh/seawater media are described. Physical characterization density functional theory calculations reveal that strong electronic interfacial interactions between optimized reaction kinetics by regulating adsorption/desorption intermediates cleavage reactants. Additionally, operando electrochemical impedance spectroscopy reveals /CoP significantly decreased phase angle with increasing applied potential compared CoP, demonstrating construction heterostructure provides a faster charge transfer surface inner layer. Notably, catalyst only requires overpotentials 101 298 mV to achieve benchmark 100 mA cm −2 freshwater OER. Moreover, prepared featured 108 330 an seawater electrolyte. Furthermore, high‐efficiency water electrolysis operation can be achieved using as anode cathode (1.63 V@100 ) coupled satisfactory durability. This finding deeper comprehension interaction Pt‐less compounds matrix electrocatalysis bifunctional electrocatalysts.

Language: Английский

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Enhancing interfacial electron transfer through PANI electron bridge for tailoring dynamic reconstruction and achieving high-performance water oxidation

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 158 - 166

Published: July 30, 2024

Language: Английский

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Progress in the development of copper oxide-based materials for electrochemical water splitting

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 62, P. 209 - 227

Published: March 12, 2024

Language: Английский

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Electric Field Redistribution Triggered Surface Adsorption and Mass Transfer to Boost Electrocatalytic Glycerol Upgrading Coupled with Hydrogen Evolution

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(29)

Published: May 5, 2024

Abstract Electrocatalytic glycerol oxidation reaction (GOR) stands out as an economical and prospective technology to replace oxygen evolution for co‐producing high‐valued chemicals hydrogen (H 2 ). Regulating the adsorption of (GLY) hydroxyl (OH) species is great significance improving GOR performance. Herein, a hierarchical p–n heterojunction by combining Co‐metal organic framework (MOF) nanosheets with CuO nanorod arrays (CuO@Co‐MOF) developed realize optimization on GOR. Specifically, CuO@Co‐MOF electrode exhibits superior performance conversion 98.4%, formic acid (FA) selectivity 87.3%, Faradaic efficiency (FE) 98.9%. The flow‐cell system bifunctional pairing (HER) reveals better energy efficiency. Experimental results theoretical calculations unravel redistributed electric field introducing Co‐containing that contribute improved performance, which not only enhances OH but also modulates excessive GLY CuO, thus reducing barriers FA desorption. Simultaneously, finite element analysis novelty structure can increase concentration − facilitate mass transfer in solution.

Language: Английский

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Constructing Built‐in‐Electric Field for Boosting Electrocatalytic Water Splitting

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

Published: June 4, 2024

Abstract Electrocatalytic water splitting shows great potential for producing clean and green hydrogen, but it is hindered by slow reaction kinetics. Advanced electrocatalysts are needed to lower the energy barriers. The establishment of built‐in electric fields (BIEF) in heterointerfaces has been found be beneficial speeding up electron transfer, increasing electrical conductivity, adjusting local environment, optimizing chemisorption with intermediates. Engineering modifying BIEF heterojunctions offer significant opportunities enhance electronic properties catalysts, thus improving This comprehensive review focuses on latest advances engineering heterojunction catalysts efficient electrolysis. It highlights fundamentals, engineering, modification, characterization, application electrocatalytic splitting. also discusses challenges future prospects engineering. Overall, this provides a thorough examination next generation electrolysis devices.

Language: Английский

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Built‐in Electric Field in Yolk Shell CuO‐Co₃O₄@Co₃O₄ with Modulated Interfacial Charge to Facilitate Hydrogen Production from Ammonia Borane Methanolysis Under Visible Light

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

Published: June 10, 2024

Abstract Developing highly efficient and low‐cost catalysts is an endless challenge in the field of producing H 2 from ammonia borane (AB). Herein, manufacture yolk‐shell CuO‐Co 3 O 4 @Co nanocomposites are reported by using Cu O@CuO as a template, which encapsulated into Co hollow nanocubes. Due to unique morphology built‐in electric (BIEF) induced interface, display remarkable catalytic activity AB methanolysis. The turnover frequency (TOF) 24.8 min ‐1 absence light significantly increases 33.9 when exposed visible light. experimental theoretical calculations demonstrate that charge migration CuO results formation dual active sites (Cu sites) adsorption activation CH OH AB, respectively. Visible light‐induced acceleration likely caused type‐II heterojunction, allows large number photogenerated electrons accumulate conduction band. This effectively activates adsorbed on site, rendering it easier break O−H bond. A plausible reaction mechanism involved bond OH, RDS proposed according FT‐IR kinetic isotope effect (KIE) experiments. work offers avenue rationally design high‐performance catalyst for rapid hydrogen production methanolysis under

Language: Английский

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Novel self-supporting thin film electrodes of FeCoNiCrMn high entropy alloy for excellent oxygen evolution reaction

Journal of Alloys and Compounds, Journal Year: 2022, Volume and Issue: 938, P. 168582 - 168582

Published: Dec. 22, 2022

Language: Английский

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Boosting alkaline urea oxidation with a nickel sulfide/cobalt oxide heterojunction catalyst via interface engineering

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(6)

Published: Dec. 1, 2023

Language: Английский

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Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Molecules, Journal Year: 2023, Volume and Issue: 28(3), P. 1475 - 1475

Published: Feb. 3, 2023

Water splitting technology is an efficient approach to produce hydrogen (H2) as energy carrier, which can address the problems of environmental deterioration and shortage well, well establishment a clean sustainable economy powered by renewable sources due green reaction H2 with O2. The efficiency production water intimately related reactions on electrode. Nowadays, electrocatalysts in are precious metal-based materials, i.e., Pt/C, RuO2, IrO2. Ni (Co, Fe)-based layered double hydroxides (LDH) two-dimensional (2D) materials typical non-precious their advantages including low cost, excellent electrocatalytic performance, simple preparation methods. They exhibit great potential for substitution materials. This review summarizes recent progress LDH 2D splitting, mainly focuses discussing analyzing different strategies modifying towards high performance. We also discuss achievements, electronic structure, catalytic center, process, mechanism. Furthermore, characterization revealing structure mechanism highlighted this review. Finally, we put forward some future perspectives relating design explore advanced catalysts splitting.

Language: Английский

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