Enhancing Electrochemical Influence of Nanocomposite Ti₃C₂T_x/MoS₂ Layered Electrode for Hybrid Supercapacitor by Synergetic Effect

Abstract

Ti 3 C 2 T x is a 2D layered structure and a promising candidate for use as a working electrode material in electrochemical applications, similar to other 2D structured nanomaterials. Moreover, the surface of the Ti 3 C 2 T x material carries a negative charge and, owing to the presence of surface functional groups, exhibits hydrophilic properties. This is due to the formation of hydrogen bonds between water molecules and T x . A Ti 3 C 2 T x /MoS 2 composite was fabricated by using a hydrothermal approach. The composition of MoS 2 in conjunction with Ti 3 C 2 T x enhances the layered distance due to its synergetic effect. The electrode composition exhibits a significantly higher specific surface area of 34.2 m 2 /g −1 in comparison to that of the Ti 3 C 2 T x electrode. A supercapacitor device based on Ti 3 C 2 T x /MoS 2 is primarily fabricated using a 1 M LiClO 4 aqueous electrolyte. This prepared device achieves a high areal capacitance of 1227.2 F/cm 2 at a scan rate of 5 mVs −1 with 90% capacitance retention over 4000 cycles at a current density of 10 A/g, indicating good energy storage capacity. The enhanced ionic conductivity of the composite electrode is compared to that of pure Ti 3 C 2 T x . This research work presents an improved electrode layered structure for studying the electrochemical performance of Ti 3 C 2 T x and Ti 3 C 2 T x /MoS 2 displays as well as their applications in supercapacitor devices.

Engineered Two-Dimensional Transition Metal Dichalcogenides for Energy Conversion and Storage

“…Recently, MXenes have been employed in the synthesis of hybrids with TMDs to exploit the synergistic benefits of these materials . The most explored MXene is the transition metal carbide T 3 C 2 T x , which has been utilized to prepare a hybrid with TMDs such as MoS 2 , 1T′-VTe 2 , CrSe 2 , and 1T-VSe 2 . ,− ASCs employing TMD-MXene hybrids have been reported to have remarkable energy and power densities. Sree Raj et al prepared a metallic VTe 2 /Ti 3 C 2 T x 2D/2D heterostructure by acid etching of Ti 3 C 2 T x from its MAX phase followed by hydrothermal synthesis to incorporate VTe 2 .…”