Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Improving the Electrochemical Behavior of Carbon Nanotubes with Selenium and Molybdenum Sulfide as Cathode Materials in Battery-Supercapacitor Hybrid Systems

Document Type : Research Article

Authors
1 Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, IR. IRAN
2 Department of Chemistry, Faculty of Basic Sciences, Imam Hossein University, Tehran, IR. IRAN
Abstract
Battery-Supercapacitor Hybrid systems are electrical storage devices that can simultaneously exhibit high energy density and power density. In this study, the MoS2-SeCNTs@Gr electrode was developed as the cathode for the hybrid battery-supercapacitor system. Initially, multi-walled carbon nanotubes were functionalized, followed by the doping of selenium nanoparticles to enhance conductivity and capacity on the nanotubes. Additionally, molybdenum disulfide nanoparticles were deposited on the selenium-doped carbon nanotubes by hydrothermal method. The electrochemical behavior of the synthesized materials was investigated using cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopy. The results indicated that the synthesized materials exhibited favorable electrochemical properties, with the electrode demonstrating a capacity of 560 F/g and retaining 94% of its initial capacity after 4000 cycles. Finally, the surface morphology and structure of the prepared electrodes were analyzed using Fe-SEM, XRD, and contact angle measurements.
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