Charge storage properties of mixed ternary transition metal ferrites MZnFe oxides (M = Al, Mg, Cu, Fe, Ni) prepared by hydrothermal method

Abstract

The current investigation focus on synthesize of nano-crystalline mixed ternary transition metal ferrites (MTTMF) through facile hydrothermal method combining post-annealing treatments via tuning the ratio of metallic elements using a nickel foam as the substrate. In this research, different transition metal ferrites of ZnFe 2 O 4 (ZnFe), CoZnFe oxide, CuZnFe oxide, NiZnFe oxide, AlZnFe oxide and MgZnFe oxide have been synthesized. X-ray diffraction analysis was used to characterize phase development occurred in the MTTMF samples. The Morphologies of the prepared materials have been studied by means of field emission scanning electron microscopy and transmission electron microscopy. The electrochemical performance of the electrodes was evaluated using galvanostatic charge-discharge, AC impedance measurement and cyclic voltammetry analysis. ZnFe electrode prepared at 150 °C shows the highest specific capacitance of 1298 F g −1 at 10 mV s −1 scan rate in 1 M KOH aqueous solution. It was concluded that higher annealing temperatures (180 °C) for this electrode resulted in better capacitive behavior with specific capacitance of 1580 F g −1 at a scan rate of 10 mV s −1. These high performance and great capacitive behavior indicated that the ZnFe electrode is a promising material for energy storage devices.

Hyperthermia and Photocatalytic Performance of Magnetic Polyvinyl Alcohol under External Magnetic Field

“…PVA with dense electrons of free lone pairs can strongly affect the photo behavior by absorbing light irradiation and instantly being excited by the influence of irradiation. Several techniques have been applied for the preparation of polymeric PVA@IONPs, such as the electrospinning method and ex situ, in situ, and solution-mixing techniques [17][18][19][20][21][22][23][24][25][26][27]. Hence, this work aimed to prepare polyvinyl alcohol-stabilized iron oxide nanoparticles (PVA@IONPs) via ultrasonic-assisted coprecipitation at room temperature.…”

Effect of Electrolyte Concentration on Electrochemical Performance of Bush Like α‐Fe2O3 Nanostructures

“…On the other hand, pseudocapacitors store charges with the help of ultra-fast reversible faradaic redox reactions between the electrolyte and the electrode materials. [15][16][17] The specific capacitance of pseudocapacitors is generally much greater than that of EDLCs which makes them superior for developing high-performance supercapacitors. [18][19] Different transition metal oxides and few conducting polymer based materials act as pseudocapacitive materials.…”

Synthesis and Characterization of CuO@PANI composite: A new prospective material for electrochemical sensing

“…In addition, Nanomaterials and their nanocomposites with unique atomic thickness are promising materials for various applications including tissue engineering [16], energy storage [17,18], water related applications [18] and catalytic industries [20][21][22] due to their outstanding properties such as high mechanical strength, large surface area, good chemical and thermal stability, ease of functionalization, and hydrophilic surface.For instance, Benmoussa et al, proposed a novel electrochemical biosensor to detect cancer biomarker (lactic acid) based on organic-inorganic composite coupled with a molecularly imprinted polymer to create a highly sensitive and selective electrochemical biosensor where a limit of detection around 0.726 μM has been determined [14]. Hence, The NPs-modified electrode enhanced signal responsiveness, sensitivity, and repeatability [23][24][25][26][27], and it has several bioscience applications.Furthermore, the characteristics of composite materials are determined by the morphology of the phases, which must be regulated across many length scales [25][26][27][28]. As a result, the creation of such materials is a "land of multidisciplinarity", requiring chemists, physicists, material scientists, and engineers to collaborate together.CuO NPs have been popular in bio-electrochemical and electrochemical operations in recent years due to their capacity to promote electron transmission in various types of sensors [29][30][31][32] and update the electrode surface in batteries and supercapacitors [33][34][35][36].…”

“…For instance, Benmoussa et al, proposed a novel electrochemical biosensor to detect cancer biomarker (lactic acid) based on organic-inorganic composite coupled with a molecularly imprinted polymer to create a highly sensitive and selective electrochemical biosensor where a limit of detection around 0.726 μM has been determined [14]. Hence, The NPs-modified electrode enhanced signal responsiveness, sensitivity, and repeatability [23][24][25][26][27], and it has several bioscience applications.…”

“…Furthermore, the characteristics of composite materials are determined by the morphology of the phases, which must be regulated across many length scales [25][26][27][28]. As a result, the creation of such materials is a "land of multidisciplinarity", requiring chemists, physicists, material scientists, and engineers to collaborate together.…”