Recent advances in Ru/Ir-based electrocatalysts for acidic oxygen evolution reaction

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 343, С. 123584 - 123584

Опубликована: Дек. 1, 2023

The electrocatalytic process of water splitting offers a promising approach to produce sustainable hydrogen. However, the slow kinetics oxygen evolution reaction (OER) presents notable challenge, especially in acidic environment proton exchange membrane (PEM) systems. Despite extensive progress made catalyst development for hydrogen production through electrolysis last century, significant advancements have been accomplished. quest OER catalysts that possess both high activity and stability, while also being affordable, continues be challenging. Currently, Ru/Ir-based electrocatalysts are only practical anode available. Therefore, it is crucial explore feasible strategies enhance performance longevity catalysts. This review comprehensive assessment obstacles prospective Additionally, underscores areas research concentration, providing valuable perspectives future endeavors development.

Язык: Английский

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The self-reconstruction of Co-modified bimetallic hydroxysulfide nanosheet arrays for efficient hydrazine assisted water splitting

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 49, С. 489 - 497

Опубликована: Авг. 23, 2023

Язык: Английский

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Directed electron transport induced surface reconstruction of 2D NiFe-LDH/Stanene heterojunction catalysts for efficient oxygen evolution

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 353, С. 124073 - 124073

Опубликована: Апрель 17, 2024

Язык: Английский

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Dual doping: An emerging strategy to construct efficient metal catalysts for water electrolysis

EcoEnergy, Год журнала: 2024, Номер 2(1), С. 114 - 140

Опубликована: Март 1, 2024

Abstract Developing efficient electrocatalysts for water electrolysis is critical sustainable hydrogen energy development. For enhancing the catalytic performance of metal catalysts, dual doping has attracted enormous interest its high effectiveness and facile realization. Dual effective tuning electronic properties, electrical conductivity, populating active sites, improving stability catalysts. In this review, recent developments in cation–cation, cation–anion, anion–anion dual‐doped catalysts splitting are comprehensively summarized discussed. An emphasis put on illustrating how regulates external internal properties boosts Additionally, perspectives pointed out to guide future research engineering high‐performance heteroatom‐doped electrocatalysts.

Язык: Английский

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Tuning d–p Orbital Hybridization of NiMoO₄@Mo₁₅Se₁₉/NiSe₂ Core‐Shell Nanomaterials via Asymmetric Coordination Interaction Enables the Water Oxidation Process

Advanced Energy Materials, Год журнала: 2024, Номер 14(20)

Опубликована: Апрель 3, 2024

Abstract The electrocatalytic performance of MoNi‐based nanomaterials undergo selenization has garnered significant interest due to their modified electronic structure, while still posses certain challenges for obtained bimetallic selenides. Here, a novel electrocatalyst NiMoO 4 @Mo 15 Se 19 /NiSe 2 core‐shell is constructed promote the desorption OOH * which can facilitate water oxidation process. nanoarrays show that “cores” are mainly nanorods “shells” selenides nanoflakes, super architectures expand more active sites and accelerate electron transfer. Moreover, hybridization interaction between Ni 3d, Mo 4d, 4p orbitals leads an asymmetric distribution electric clouds, decreases adsorption energy transformation oxygen‐containing species. Electrochemical data displays overpotentials only 195 mV, 220 224 mV oxygen evolution reaction (OER) in alkaline freshwater, simulated seawater, natural seawater. current density decay negligible after 100 h stability at about 1.46 V with three‐electrode system low cost unique this work provide constructive solution designing efficient stable OER catalysts future.

Язык: Английский

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Electro‐Reconstructed Transition Metal Electrodes for Coupled‐Upgrading of Nitrate Pollution and Waste Poly(Ethylene Terephthalate) Plastics

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Two unrelated forms of pollution, nitrate‐containing wastewater and waste poly(ethylene terephthalate) (PET) plastics, can be converted into high‐value chemicals by electrochemical reduction oxidation reactions. Herein, coupled electrocatalysis is used for the co‐production ammonia (NH 3 ) formic acid (FA) with a cathode formed reconstructing Co on copper foam (R‐Co/CF) as catalyst nitrate reaction (NO RR) an anode NiCo nickel (R‐NiCo/NF) ethylene glycol (EGOR). The Faraday efficiency R‐Co/CF 96.2% that R‐NiCo/NF catalysts 98.2%. By coupling NO RR PET hydrolysate reaction, cell voltage required at current density 50 mA cm −2 202 mV lower than traditional electrolytic system, indicating electrocatalytic upcycling plastics energy‐saving cost‐effective strategy producing value‐added chemicals. Techno‐economic analysis indicates compared RR//OER RR//PET system save 2.8 × 10 kW h −1 in electricity generate ≈6 900 USD revenue per tonne NH .

Язык: Английский

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Non-noble metal high entropy sulfides for efficient oxygen evolution reaction catalysis

Applied Surface Science, Год журнала: 2023, Номер 642, С. 158598 - 158598

Опубликована: Окт. 2, 2023

Язык: Английский

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Silver Nanowires Cascaded Layered Double Hydroxides Nanocages with Enhanced Directional Electron Transport for Efficient Electrocatalytic Oxygen Evolution

Small, Год журнала: 2024, Номер 20(29)

Опубликована: Фев. 20, 2024

Designing and fabricating highly efficient oxygen evolution reaction (OER) electrocatalytic materials for water splitting is a promising practical approach to green sustainable low-carbon energy systems. Herein, facile in situ growth self-template strategy by using ZIF-67 as consumable layered double hydroxides (LDHs) template silver nanowires (AgNWs) 1D conductive cascaded substrate controllably synthesize the target AgNWs@CoFe-LDH composites with unique hollow shell sugar gourd-like structure enhanced directional electron transport effect reported. The AgNWs exhibit key functions of close connection CoFe-LDH nanocages support composite catalyst inducing electrons directionally moving from AgNWs. Meanwhile, ultrathin nanosheets structural properties show abundant active sites generation. versatile optimized components, transport, synergistic achieves high OER performance overpotential 207 mV long-term 50 h stability at 10 mA cm

Язык: Английский

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Electronic structure engineering of NiFe hydroxide nanosheets via ion doping for efficient OER electrocatalysis

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156430 - 156430

Опубликована: Окт. 1, 2024

Язык: Английский

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Synergistic etching of nickel foam by Fe3+ and Cl− ions to synthesize nickel-iron-layered double hydroxide nanolayers with abundant oxygen vacancies for superior urea oxidation

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 668, С. 375 - 384

Опубликована: Апрель 17, 2024

Язык: Английский

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