MXene Derived-TiO2/β-Ag2MoO4 Nanocomposite: A Multifunctional Electrode for Enhanced Energy Storage in Supercapacitors and Lithium-Ion Batteries

Abstract

We employed a simple and cost effective reflux process to construct an advanced hybrid M-TiO2/β-Ag2MoO4 nanocomposite, evaluating its potential as a versatile electrode material for both lithium-ion batteries (LIBs) and supercapacitors (SCs). The combination of layered MXene with the cubic-like morphology of β-Ag2MoO4 yielded the M-TiO2/β-Ag2MoO4 nanocomposite, which exhibited exceptional electrochemical performance in three-electrode systems, coin-cell symmetric supercapacitors (SCs), and lithium-ion batteries. The M-TiO2/β-Ag2MoO4-2 nanocomposite achieved an outstanding specific capacitance (Csp) of 2599 F g-1 at 1 A g-1 with 98.6% retention over 25,000 cycles in the three-electrode setup. In a symmetric device, it demonstrated a Csp of 309 F g-1 at 1 A g-1, with 95% retention and 95% coulombic efficiency after 10,000 cycles. The fabricated device offered a maximum energy density (ED) of 27.4 Wh kg-1 and a power density (PD) of 2500 W kg-1. Detailed analysis of the charge storage mechanism further elucidated the high performance of the device. In addition, the synthesized M-TiO2/β-Ag2MoO4-2 nanocomposite was used as an anode material for lithium-ion batteries. As an anode material for LIBs, the nanocomposite exhibited an impressive lithium storage capacity of 1013 mAh g-1 at 0.1 A g-1, with remarkable rate capability and stability, underscoring its multifunctional nature. This study highlights the potential of M-TiO2/β-Ag2MoO4-2 as a high-performance material for next-generation energy storage technologies.