Review of MXene-Based Electrospun Nanocomposites for Flexible and Wearable Sensors

The necessity for achieving high-performance and precise detection of internal and external stimuli in physical and biological settings has emerged as exceedingly crucial in recent years. The exceptional electrical conductivity and high surface area of MXenes have significantly accelerated the advancement of flexible sensor research. Recently, MXenes have been integrated into electrospun nanofiber structures, with researchers exploiting these frameworks for a diverse range of applications. This article provides an overview of the latest developments in MXene-functionalized flexible electrospun sensors. Initially, we examined the various flexible sensing mechanisms (such as piezoelectric/resistive, chemoresistive, etc.), followed by an analysis of the numerous factors that impact the electrospinning of MXene-based composites. Subsequently, we highlight the recent areas of application for MXene-functionalized flexible electrospun sensors, encompassing uses from wearable health monitoring to gas detection. Finally, we conclude by delineating the existing limitations and suggesting future research directions for this technology.