Enhancing Alloyed Nickel Sites via Heterogeneous CoP₃–Ni₂P Modification for Highly Efficient Urea Electrooxidation

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(47), P. 17263 - 17271

Published: Nov. 11, 2024

To align with the high-energy conversion efficiency in electrochemical synthesis of hydrogen carriers, it is pivotal to boost reaction kinetics anode electrolytic cell. Electrocatalytic urea oxidation (UOR) has gained attention as a promising alternative water due its small theoretical potential. However, application UOR confronted great challenges unsatisfactory current under low Herein, we developed self-supported electrode, heterogeneous cobalt phosphide, and nickel phosphide-modified nickel–cobalt alloy nanotube arrays foam skeleton support (CoP3–Ni2P–CoxNi1–x NTAs/NF) improve performance by optimizing local charge distribution active Ni sites. The CoP3–Ni2P–CoxNi1–x NTAs/NF electrode exhibited excellent activity potential 1.36 V (vs RHE) at 100 mA cm–2. Surface structure analysis situ Raman results revealed that synchronous CoNi alloying CoP3–Ni2P introduction boosted formation Ni3+–O species caused modulated surface electronic atoms, thus accelerating interfacial electrocatalysis. This work presents new option for template catalysts efficient reactions.

Language: Английский

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Supramolecular and homogeneous electrocatalytic HER properties of new heteroleptic cyanoacetamide dithiolate based Ni(II) tertiary phosphanes: Effect of co-ligand flexibility on electrocatalytic performance

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Three heteroleptic cyanoacetamide dithiolate-based Ni( ii ) tertiary phosphanes were synthesized and used as electrocatalysts for the hydrogen evolution reaction.

Language: Английский

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Unraveling group dynamics in alkaline electrochemical water splitting using β-substituted porphyrinoids

Inorganica Chimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 122453 - 122453

Published: Nov. 1, 2024

Language: Английский

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Effect of Electrolyte pH in Additive‐Free NiFe Catalyst Electrodeposition for Electro‐Catalytic OER Applications

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

Published: Dec. 10, 2024

Abstract This study presents the correlation between electrolyte pH, surface morphology, chemical speciation and electro‐catalytic oxygen evolution activity of additive‐free electrodeposited NiFe catalysts for application in anion exchange membrane water electrolysis. Spherical morphologies were identified at pH 0, shifting towards honey‐combed structures 4 with increasing area, especially 3. Further, was found to influence composition activity. Enhanced OER noted 2 overpotentials 214 mV 10 mA cm −2 267 100 . The results reveal that is a parameter not only influencing morphology but also tailoring Fe oxide hydroxide consequently catalytic outcomes highlight as key process should be adjusted according application, may substitute addition electrolyte‐additives, proposing simpler method improving catalyst electrodeposition.

Language: Английский

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Nickel-Matrix Composite with Diamane: Molecular Dynamics

Mechanics of Solids, Journal Year: 2024, Volume and Issue: 59(6), P. 3673 - 3680

Published: Dec. 1, 2024

Language: Английский

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