Harnessing the potential of NiMn₂O₄ nanoparticle: a next-generation supercapacitor electrode material

Abstract

This research addresses the pressing demand to enhance energy density and power in energy storage devices, including batteries, fuel cells, and supercapacitors. Here, NiMn2O4 is synthesized using the urea combustion method. Characterization techniques, including powder X-ray diffraction, field emission scanning electron microscopy, and BET analysis, are employed to investigate its properties. The diffraction peaks showed that NMO had a face-centered tetragonal structure, and the Scherrer equation was used to figure out the average crystallite size (t) as 8.73 nm. Its electrochemical behavior is extensively evaluated through cyclic voltammetry and galvanic charge-discharge measurements. The findings indicate that the fabricated NiMn2O4 electrodes exhibited remarkable specific capacitance and exceptional cycling stability, retaining 97% of their initial performance over 10000 cycles. The specific capacitance of the electrode from GCD was obtained 80 F/g at a current density of 0.25 A/g. This study highlights the potential of NiMn2O4 as an electrode material for high-performance electrochemical supercapacitors, offering a viable solution for advancing energy storage technologies.

Integrated study of the structural and magnetic characteristics of Nd(Mn, Cr)0.5O3: exploring perovskite material

“…The positive value of θc signifies the ferromagnetic interaction. The estimated parameters, such as θc and effective paramagnetic moment μ eff are summarized in table 4. In low spin state (i.e., 4.5 μ B ), the practical value of μ eff is found to be similar to the theoretical value.…”

“…Perovskites are a type of inorganic crystal that has gained significant attention due to their physical properties and various applications in fields such as semiconducting, optoelectronics, and sensing [1][2][3]. They have found widespread use in industrial applications, such as the multilayer ceramic capacitor industry, where perovskite nanopowder is utilized for its excellent dielectric properties [4]. 3D organo-halide perovskites have unique photovoltaic characteristics.…”

Recent advancements in supercapacitors and their charge storage mechanism and progress in transition metal sulfide-based electrodes

“…High theoretical capacitance, porosity, strong electrical conductance, and short diffusion paths are favored in materials for electrodes with excellent performance and effectiveness as potential SC electrodes. So, modern energy research focuses on the discovery of novel electrode materials that are both environmentally acceptable and commercially successful [74,75]. The electrolyte utilized may significantly impact stability, energy and power outputs, and overall storage, in addition to the relevance of the electrode materials [75].…”