Muhammad Arshad Kamran , Muhammad Rashid , Sami Ullah , Thamer Alharbi
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引用次数: 0
Abstract
The electrode materials, which exhibit improved electrochemical characteristics, have broad applications in high-capacity and high-power-density storage devices like supercapacitors. This research investigates the synthesis, electrochemical performance, and characterization of novel nanostructures comprised of molybdenum-doped nickel cobalt sulfide (Mo-NiCo2S4 NSs) as active electrode materials. For the first time, Mo-NiCo2S4 nanostructures synthesized via a one-step hydrothermal method demonstrate high efficiency as supercapacitor materials, showcasing their potential for supercapacitor applications. To examine the physical and chemical characteristics of the synthesized Mo-NiCo2S4 nanostructures, X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) analyses were employed. Furthermore, the electrochemical efficacy of novel electrode materials was investigated using three electrodes configuration, aiming for superior performance in supercapacitor applications. Moreover, the collaborative effect of Mo-NiCo2S4 NSs was examined via cyclic voltammogram (CV), galvanostatic charge-discharge (GCD) curves, and electrochemical impedance spectroscopy (EIS). The cotton-like modified morphology observed via SEM revealed an increase in redox-active sites, thereby enhancing the energy storage capacity of the electrode material. The optimized sample (5 % Mo-NiCo2S4 NSs) demonstrated a specific capacitance of 1740 F g−1 at a current density of 4 A g−1. Additionally, the optimized electrode displayed notable energy density (60.4 WhKg−1) and power density (500 Wkg-1). The modified cotton-like morphology of the optimized sample exhibited superior electrochemical performance compared to the NiCo2S4 NSs. This study suggests that Mo-NiCo2S4 nanostructures hold great promise as electrode materials for future supercapacitors in energy storage systems.
期刊介绍:
Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals.
Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena.
Keywords:
• topological insulators/superconductors, majorana fermions, Wyel semimetals;
• quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems;
• layered superconductivity, low dimensional systems with superconducting proximity effect;
• 2D materials such as transition metal dichalcogenides;
• oxide heterostructures including ZnO, SrTiO3 etc;
• carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.)
• quantum wells and superlattices;
• quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect;
• optical- and phonons-related phenomena;
• magnetic-semiconductor structures;
• charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling;
• ultra-fast nonlinear optical phenomena;
• novel devices and applications (such as high performance sensor, solar cell, etc);
• novel growth and fabrication techniques for nanostructures