Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177296 - 177296
Опубликована: Окт. 1, 2024
Язык: Английский
Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177296 - 177296
Опубликована: Окт. 1, 2024
Язык: Английский
Applied Organometallic Chemistry, Год журнала: 2024, Номер 39(2)
Опубликована: Окт. 20, 2024
ABSTRACT The rational design of noble metal‐free electrocatalysts represents one the basic stones for fuel cell development. With exploration eco‐friendly nanomaterials investigated alcohol oxidation process, nickel‐based electrodes have been recognized as most auspicious anodes with promoted activity and stability. In this work, a series NiCo 2 O 4 nanoparticles were deposited onto graphite sheets (NiCo /T) introducing varied proportions cobalt oxide species. Co‐precipitation protocol respective metallic hydroxides carbonaceous support was followed consecutive annealing in an air atmosphere at 400°C. fabricated mixed nanopowder physically studied using X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), energy dispersive analysis (EDX), photoelectron spectroscopy (XPS), selected area (SAED). Uniformly arranged observed on surface evidenced by SEM TEM. cubic lattice structure formed crystals also confirmed XRD through defined peaks binary oxides clarifying their successful preparation scheme. electrocatalytic properties these /T nanocatalysts evaluated oxidizing ethanol molecules solution. Pronounced current densities remarkably measured relation to that NiO/T. Differing introduced content into synthesized nanocatalyst significantly controlled its catalytic performance. /T‐20 exhibited highest stability among prepared nanomaterials. Much decreased charge transfer resistances recorded electrode demonstrating characteristics. This work could provide reasonable route simple synthesis comparable transition promising attitudes generation purposes.
Язык: Английский
Процитировано
4Fuel, Год журнала: 2025, Номер 392, С. 134955 - 134955
Опубликована: Март 5, 2025
Язык: Английский
Процитировано
0Molecules, Год журнала: 2024, Номер 29(20), С. 4975 - 4975
Опубликована: Окт. 21, 2024
Efficient and cost-effective catalysts for hydrogen evolution reaction (HER) are essential large-scale production, which is a critical step toward reducing carbon emissions advancing the global transition to sustainable energy. Nickel sulfide-based catalysts, exist in various stoichiometries, show promise HER alkaline media. However, as single-phase materials, they do not demonstrate superior activity compared Pt-based catalysts. This review highlights recent strategies enhance performance of nickel sulfides, including heteroatom doping, heterostructure construction, vacancy engineering, tailored their different stoichiometric ratios. The study also examines synthesis methods, characterizations, impact on performance. Furthermore, it discusses challenges limitations current research suggests future directions improvement.
Язык: Английский
Процитировано
2Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177296 - 177296
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
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