Boosting Hydrogen Adsorption via Manipulating the d-Band Center of Ferroferric Oxide for Anion Exchange Membrane-Based Seawater Electrolysis

ACS Catalysis, Год журнала: 2024, Номер 14(9), С. 6981 - 6991

Опубликована: Апрель 19, 2024

Ferroferric oxide-based electrocatalysts are widely applied as hydrogen evolution reaction (HER) catalysts due to their low cost and good electrical conductivity, but they tend exhibit slow adsorption kinetics for HER poison by corrosive Cl– alkaline seawater splitting. In this regard, we report a nanosheet-like catalyst constructed decorating Fe3O4 with Ru P dual doping (Ru/P–Fe3O4@IF). situ characterization density functional theory (DFT) calculations demonstrate that the resulting Ru/P–Fe3O4@IF shows enhanced strength coverage thermal neutral free energy of adsorbed H (ΔGH*) modulating d-band center Fe3O4. Moreover, Ru/P moving up center, weak makes on active sites be avoided in Benefiting from above, exhibits superior performance commercial Pt/C overpotentials only −46 −144 mV reach 100 1000 mA cm–2, respectively. addition, AEM electrolyzer assembled Ru/P–Fe3O4 requires 1.93 V (cell voltage) drive current 2 A cm–2 can maintain stable operation more than h at 500

Язык: Английский

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Recent advancements in noble-metal electrocatalysts for alkaline hydrogen evolution reaction

Chinese Chemical Letters, Год журнала: 2024, Номер unknown, С. 109557 - 109557

Опубликована: Янв. 1, 2024

Язык: Английский

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Recent advances in hydrogen production coupled with alternative oxidation reactions

Coordination Chemistry Reviews, Год журнала: 2024, Номер 509, С. 215777 - 215777

Опубликована: Март 26, 2024

Язык: Английский

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In Situ Growth and Dynamic Transformation of Nickel Chelate Nanoarrays into Reactive Surface Reconstituted Heterostructure for Overall Water Splitting

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Июнь 25, 2024

Abstract In this work, self‐derivation and surface reconstruction strategies are innovatively introduced into the synthetic route of metal complex‐derived catalysts. The in situ grown nanorod arrays Ni‐based complex prepared by a simple rapid ligand chelation reaction. Furthermore, highly active heterogeneous electrocatalysts developed mild‐temperature calcination. Attributed to maintained morphology dispersed Ni/Ni(OH) 2 heterojunction sites, as‐prepared electrode exhibits superior hydrogen evolution activity (38.4 mV–10 mA cm −2 ). particular, dynamic during oxygen through Fourier transform infrared Raman spectroscopies observed. reconstructed Ni(OH) /NiOOH activation gives higher performance (369 mV–200 Further density functional theory mechanism studies disclose that contributes adsorption H* activated optimizes formation intermediates evolution.

Язык: Английский

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Unlocking the potential of hydrogen evolution: Advancements in 3D nanostructured electrocatalysts supported on nickel foam

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 355, С. 124197 - 124197

Опубликована: Май 12, 2024

Язык: Английский

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2D PtRhPb Mesoporous Nanosheets with Surface‐Clean Active Sites for Complete Ethanol Oxidation Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер 36(35)

Опубликована: Июль 4, 2024

The development of active and selective metal electrocatalysts for complete ethanol oxidation reaction (EOR) into desired C1 products is extremely promising practical application direct fuel cells. Despite some encouraging achievements, their activity selectivity remain unsatisfactory. In this work, it reported that 2D PtRhPb mesoporous nanosheets (MNSs) with anisotropic structure surface-clean site perform perfectly EOR electrocatalysis in both three-electrode two-electrode systems. Different to the traditional routes, a etching strategy developed produce mesopores while retaining parent anisotropy quasi-single-crystalline without mesopore-forming surfactants. This method also allows general synthesis metals other compositions structures. When being performed alkaline electrocatalysis, best MNSs deliver remarkably high (7.8 A mg

Язык: Английский

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Hydrogen storage performance of MXenes: Intrinsic properties and catalytic effects

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 101, С. 904 - 945

Опубликована: Янв. 5, 2025

Язык: Английский

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Atomic Gap-State Engineering of MoS₂ for Alkaline Water and Seawater Splitting

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 11, 2025

Transition-metal dichalcogenides (TMDs), such as molybdenum disulfide (MoS2), have emerged a generation of nonprecious catalysts for the hydrogen evolution reaction (HER), largely due to their theoretical adsorption energy close that platinum. However, efforts activate basal planes TMDs primarily centered around strategies introducing numerous atomic vacancies, creating vacancy–heteroatom complexes, or applying significant strain, especially acidic media. These approaches, while potentially effective, present substantial challenges in practical large-scale deployment. Here, we report gap-state engineering strategy controlled activation S atom MoS2 through metal single-atom doping, effectively tackling both efficiency and stability alkaline water seawater splitting. A versatile synthetic methodology allows fabrication series single-metal atom-doped materials (M1/MoS2), featuring widely tunable densities with each dopant replacing Mo site. Among these (Mn1, Fe1, Co1, Ni1), Co1/MoS2 demonstrates outstanding HER performance media, overpotentials at mere 159 164 mV 100 mA cm–2, Tafel slopes 41 45 dec–1, respectively, which surpasses all reported TMD-based benchmark Pt/C during splitting, can be attributed an optimal modulation associated sulfur atoms. Experimental data correlating doping density identity performance, conjunction calculations, also reveal descriptor linked near-Fermi gap state modulation, corroborated by observed increase unoccupied 3p states.

Язык: Английский

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Mesoporous Mo-doped PtBi intermetallic metallene superstructures to enable the complete electrooxidation of ethylene glycol

Chemical Science, Год журнала: 2024, Номер 15(12), С. 4349 - 4357

Опубликована: Янв. 1, 2024

Novel freestanding M-PtBiMo IMSs were achieved via a simple and effective one-step wet chemical method. The as highly efficient anode electrocatalysts boosted the activity stability toward EGOR actual DEGFCs.

Язык: Английский

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Insights into the pH effect on hydrogen electrocatalysis

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Язык: Английский

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