Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR Nashrieh Shimi va Mohandesi Shimi Iran 1022-7768 44 1 2025 04 21 Improving the Electrochemical Behavior of Carbon Nanotubes with Selenium and Molybdenum Sulfide as Cathode Materials in Battery-Supercapacitor Hybrid Systems Improving the Electrochemical Behavior of Carbon Nanotubes with Selenium and Molybdenum Sulfide as Cathode Materials in Battery-Supercapacitor Hybrid Systems 103 113 722731 FA Rezvan Rostami Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, IR. IRAN Hossein Mohammadzadeh Aydisheh Department of Chemistry, Faculty of Basic Sciences, Imam Hossein University, Tehran, IR. IRAN Journal Article 2024 10 15 <em>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.</em> <em>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.</em> https://www.nsmsi.ir/article_722731_519409cd9cf7bf25465de3edb65304d2.pdf