Characterization of spark-discharge–synthesized multi-element oxide nanocomposites and thermophysical performance of their water-based nanofluids for solar collectors

Temperature-Driven Formation and Consolidation of Magnetite-Type Nano-Assemblies in a PEI-Assisted Solvothermal System

Magnetite-type iron oxide nano-assemblies are widely investigated because of their strong magnetic response, chemical stability, and tunable surface chemistry. However, the lower-temperature threshold for crystalline spinel formation in polyethylenimine-assisted solvothermal systems remains insufficiently defined. In t...

Hydrothermally Synthesized Rare-Earth Oxides as Positive Electrodes for PVA/KOH Gel-Electrolyte Hybrid Supercapacitors

Rare-earth metal oxides are an exciting group of pseudocapacitive materials, but there are limited comparative studies on their electrochemical performance and the further fabrication of gel-electrolyte-based energy-storage devices. In the present study, CeO2, La2O3, Y2O3, Sm2O3, and Pr2O3 were prepared via the hydroth...

Electrical conductivity and dielectric behavior of Co3O4/MnO2 nanoparticles filled PVA–PEO blend for advanced optoelectronic applications

Synthesis and investigation of the structural, dielectric, and magnetic properties of copper spinel ferrite (CuFe₂O₄) prepared via a self-combustion sol–gel method

Thermophysical Properties And Heat Transfer Performance Of N-Doped Carbon-Metal Oxide Nanocomposite Nanofluids

Nanofluids, made by dispersing solid nanoparticles in a base fluid such as water or ethylene glycol, raise the thermal conductivity of ordinary coolants but come with two familiar penalties: the viscosity rises with loading, and the particles tend to settle or clump over time. Nitrogen-doped carbon combined with a tran...

Magnetic-Field-Assisted Hydrothermal Synthesis of Marigold-Like Nickel Sulfide Nanoflowers with Faradaic-Dominated Intercalation Pseudocapacitance for High-Performance Hybrid Supercapacitors

Nickel sulfide nanostructures have emerged as promising electrode materials for energy storage applications because of their high conductivity and large specific surface area. In this study, nickel sulfide nanostructures were synthesized via a magnetic-field-assisted hydrothermal method, with varying reaction duratio...