Functionality Modulation Toward Thianthrene‐based Metal‐Free Electrocatalysts for Water Splitting

Advanced Materials, Год журнала: 2024, Номер 36(18)

Опубликована: Янв. 21, 2024

The development of metal-free bifunctional electrocatalysts for hydrogen and oxygen evolution reactions (HER OER) is significant but rarely demonstrated. Porous organic polymers (POPs) with well-defined electroactive functionalities show superior performance in reaction (HER) (OER). Precise control the active sites' local environment requires careful modulation linkers through judicious selection building units. Here, a systematic strategy introduced modulating functionality to design synthesize series thianthrene-based sp

Язык: Английский

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Development of noble metal-free electrocatalysts towards acidic water oxidation: From fundamental understanding to state-of-the-art catalysts

eScience, Год журнала: 2024, Номер unknown, С. 100295 - 100295

Опубликована: Июль 1, 2024

The development of low-cost and efficient electrocatalysts for oxygen evolution reaction (OER) in acid electrolytes is critical to the widespread implementation proton electrolyte membrane water electrolyzers (PEMWE) towards carbon neutralization. Noble metal Ir- Ru-based materials are state-of-the-art catalysts but still suffer from prohibitive price scarcity. In this context, a variety noble metal-free have been developed decrease cost PEMWE. review, we first summarize activity expression mechanism stability issues non-precious catalysts, highlighting origins performance degradation possible mitigation strategies. Then, systematically review several recently focusing on design rationale structure-performance relation. Finally, prospects non-noble prospected, with potential challenges practical applications presented.

Язык: Английский

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Synergistic effect of a bamboo-like Bi₂S₃ covered Sm₂O₃ nanocomposite (Bi₂S₃–Sm₂O₃) for enhanced alkaline OER

Physical Chemistry Chemical Physics, Год журнала: 2024, Номер 26(3), С. 2678 - 2691

Опубликована: Янв. 1, 2024

Efficient and durable electrocatalyst for OER.

Язык: Английский

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Redox insights and OER activity in 3D-MOFs: the role of alkali metal ions

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(14), С. 8392 - 8404

Опубликована: Янв. 1, 2024

In situ decoration of outer sphere K + ions was made in a 3D Co( ii ) MOFs, those are showing outstanding OER activity; having 27-fold higher TOF than Co 3 O 4 materials. The impact examined through various electrochemical studies, marking first instance such an investigation.

Язык: Английский

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‘Total electrode’ and ‘intrinsic’ activity parameters in water electrolysis: a comprehensive investigation

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(47), С. 26023 - 26043

Опубликована: Янв. 1, 2023

Various electrochemical activity markers were distinguished based on their intrinsic and extrinsic behaviours. A detailed experiment portrays the importance of properly reporting in terms parameters.

Язык: Английский

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Intrinsic Specific Activity Enhancement for Bifunctional Electrocatalytic Activity toward Oxygen and Hydrogen Evolution Reactions via Structural Modification of Nickel Organophosphonates

Inorganic Chemistry, Год журнала: 2024, Номер 63(8), С. 3795 - 3806

Опубликована: Фев. 9, 2024

A comprehensive knowledge of the structure–activity relationship framework material is decisive to develop efficient multifunctional electrocatalysts. In this regard, two different metal organophosphonate compounds, [Ni(Hhedp)2]·4H2O (I) and [Ni3(H3hedp)2(C4H4N2)3]·6H2O (II) have been isolated through one-pot hydrothermal strategy by using H4hedp (1-hydroxyethane 1,1-diphosphonic acid) N-donor auxiliary ligand (pyrazine; C4H4N2). The structures synthesized materials established single-crystal X-ray diffraction studies, which confirm that compound I formed a one-dimensional molecular chain structure, while II exhibited three-dimensional extended structure. Further, crystalline participated as electrocatalysts for oxygen evolution hydrogen reactions (OER HER) compared state-of-the-art electrocatalyst RuO2. electrocatalytic OER HER performances show displayed better toward (η10 = 305 mV) 230 in alkaline (1 M KOH) acidic (0.5 H2SO4) media, respectively. Substantially, specific activity has assessed order measure inherent title electrocatalyst, displays an enrichment fourfold higher (0.64 mA/cm2) than (0.16 experiments. Remarkably, inclusion pyrazine into structure (compound II) not only offers dimensionality along with significant enhancement overall bifunctional but also improves long-term stability, noteworthy family hybrid materials.

Язык: Английский

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Modulating Electronic Structures of Bimetallic Co-Fe Sulfide Ultrathin Nanosheet Supported on g-C3N4 Promoting Electrocatalytic Hydrogen Evolution Performance

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 653, С. 1557 - 1565

Опубликована: Окт. 2, 2023

Язык: Английский

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Enhanced oxygen evolution reaction and durability of carbon dot-anchored nickel-iron oxyhydroxide electrodes for alkaline water electrolysis at high current densities

Materials Today Advances, Год журнала: 2025, Номер 25, С. 100560 - 100560

Опубликована: Янв. 28, 2025

Язык: Английский

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Interfacial surface engineering of Co-Mn-P ultrathin nanosheets on Ni-Co hierarchical nanostructure for boosting electrochemical active sites in overall water splitting

Journal of Power Sources, Год журнала: 2025, Номер 641, С. 236840 - 236840

Опубликована: Март 28, 2025

Язык: Английский

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Sustainable energy and OER: A comprehensive review of copper-based electrocatalyst developments

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 131, С. 177 - 190

Опубликована: Апрель 28, 2025

Язык: Английский

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