Enhancing Supercapacitor Performance: Synergistic 1T/2H-MoS<sub>2</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> Hybrid as an Efficient Electrode Material for Asymmetric Supercapacitor Applications
Monika Patel, Kajal Mahabari, Riddhi Patel, Ranjit Mohili, Amal A. Abdel Hafez, Mani Govindasamy, Nitin K. Chaudhari
Abstract
The development of high-performance electrode materials with superior energy storage capabilities is crucial for next-generation supercapacitors. In this study, we present the synthesis of 1T/2H-MoS 2 @Ti 3 C 2 T x hybrid nanostructures that synergistically combine the high electrical conductivity of Ti 3 C 2 T x MXene and the redox-active characteristics of 1T/2H-MoS 2 . The hybrid material exhibits excellent electrochemical performance, delivering a specific capacitance of 1162.22 F g –1 at 1 A g –1 and retaining 80% of its capacitance after extended cycling, indicating excellent stability. The assembled asymmetric supercapacitor (ASC) operates across a wide potential window of 1.6 V in a 2 M KOH electrolyte, achieving a specific capacitance of 62.5 F g –1 at 1 A g –1 and demonstrating remarkable rate capability. Electrochemical impedance spectroscopy (EIS) reveals a low charge transfer resistance and Warburg impedance, indicating rapid ion diffusion. The Ragone plot highlights a high energy density of 22.22 Wh kg –1 and a power density of 2880 W kg –1, underlining its potential for high-power energy storage. The superior performance is attributed to the synergistic effects of conductive Ti 3 C 2 T x and redox-active 1T/2H MoS 2, enabling efficient charge transport and abundant electroactive sites. This work provides a promising pathway for designing advanced electrode materials for high-performance energy storage systems.