Synthesis of MXene and design the high-performance energy harvesting devices with multifunctional applications

Abstract

MXene is a promising candidate in two-dimensional materials because of its novel and unique properties. It shows remarkable results in energy harvesting devices owing to the high conductivity, transparency, excellent absorbance, significant generation of photogenerated charge carriers and extensive charge storage capabilities. The MXene is successfully synthesized and used in energy harvesting devices in this study. The estimated performance of the MXene/based Schottky photovoltaics device is increased to 11.9%, much higher than the recently reported 2D-based solar cells. Further, the efficiency and stability are estimated using the different interfacial layers (SiO2, Al2O3, and h-BN) and surface modification by controlling the recombination rate and Schottky barrier height. Besides, the MXene is used to design an electrode in the supercapattery emerges device. The highest value of specific capacity (755.7 Cg-1) is estimated at a current density of 1.5 Ag-1. Further, the supercapattery device is designed. A high value of specific capacity (197.7 Cg-1) and energy density of 68.8 WhKg−1 with an extraordinary power density of 1120 WKg-1 is obtained at the current density of 0.8 Ag-1. Further, the Coulomb efficiency (92%) and capacity retention (87%) is maintained after 1000 charging and discharging cycles. The astonishing results provide a unique platform to increase the performance of photovoltaic and energy storage devices using 2D MXene materials.