Outstanding Activity and Durability of Supported NiCo₂O₄ Nanoparticles for Direct Ethanol Fuel Cells

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

---

Crassula perforata structured Ni3S2/NiTe electrodes enable efficient and robust seawater electrolysis at industrial-level current density

Fuel, Год журнала: 2025, Номер 392, С. 134955 - 134955

Опубликована: Март 5, 2025

Язык: Английский

---

A Review of Stoichiometric Nickel Sulfide-Based Catalysts for Hydrogen Evolution Reaction in Alkaline Media

Molecules, 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

---

Nitrogen-doped carbon nanotube-coated cobalt and cobalt nitride heterojunction hierarchical structure for hydrogen evolution at full pH

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177296 - 177296

Опубликована: Окт. 1, 2024

Язык: Английский

---