Abstract
The fascinating features of 2D nanomaterials for various applications have prompted increasing research into single and few-layer metal dichalcogenides nanosheets using improved nanofabrication and characterization techniques. MoS2 has recently been intensively examined among layered metal dichalcogenides and other diverse transition metal-based materials, that have previously been studied in various applications. In this research, we report mixed-phase Mn-doped MoS2 nanoflowers for supercapacitor performance studies. The confirmation of the successfully prepared Mn-doped MoS2 nanoflowers was characterized by XRD, SEM-EDS, RAMAN, and BET research techniques. The mixed-phase of the as-synthesized electrode material was confirmed by the structural changes observed in the XRD and RAMAN studies. The surface area from the BET measurement was calculated to be 46.0628 m2/g, and the adsorption average pore size of the electrode material was 11.26607 nm. The electrochemical performance of the Mn-doped MoS2 electrode material showed a pseudo-capacitive behavior, with a specific capacitance of 70.37 Fg−1, and with a corresponding energy density of 3.14 Whkg−1 and a power density of 4346.35 Wkg−1. The performance of this metal-doped MoS2-based supercapacitor device can be attributed to its mixed phase, which requires further optimization in future works.
Highlights
Electrochemical energy storage devices are currently attracting considerable consideration for harnessing their energy potential, across the scientific world
The as-synthesized materials showed a hierarchical 3D-structure flower-like morphology
The elucidation of the as-synthesized material was carried out using XRD, RAMAN, SEM-EDS, and BET methods
Summary
Electrochemical energy storage devices are currently attracting considerable consideration for harnessing their energy potential, across the scientific world. This is due to the ever-increasing demand for eco-friendly energy storage devices (fuel cells, batteries, and supercapacitors), as a better replacement for the existing energy sources (fossil fuel) that are deteriorating climatic conditions around the world [1,2,3]. The fast depletion of these energy resources based on their availability calls for the development of alternative energy storage devices [4]. Supercapacitors are high-power energy storage devices that possess a better capacitance output than conventional capacitors [5]. High energy/power density, fast charge/discharge capability, and excellent cycling stability are some of the distinguishing characteristics of supercapacitors that
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