Review of MXene Nanosheet Composites for Flexible Pressure Sensors

Abstract

Recently, there has been a huge demand for flexible pressure sensors in various fields, including smart wearable textiles, health detection, and electronic skin. Flexible pressure sensors have been developed with high sensitivity, wide sensing range, rapid response time, and excellent cycling stability. Currently, emerging conductive materials include two-dimensional transition metal carbides and nitrides (MXenes). These materials have attracted immense attention in the field of flexible pressure sensors due to their high electrical conductivity, large specific surface area, and satisfactory hydrophilicity. This review highlights different preparation methods of MXene composites. It also summarizes the nanostructure design of pressure-sensitive materials to improve the performance of flexible pressure sensors for soft electronics applications. This review provides a comprehensive overview of the progress of MXene composites and their prospects in the area of flexible pressure sensors and summarizes the applications and challenges of these sensors in intelligent wearables. This review also proposes some suggestions for developing a new generation of intelligent textiles.

Sensing nitrophenols and luminescent ink applications of sulfur quantum dots

“…48 The band at 1193 cm À1 was attributed to the C-O-H or C-N bond, 49 and the sulfur-oxygen bond appeared at 659.5 cm À1 . 44 According to the XPS data, these observed stretching vibrations demonstrate that the surface of SQDs is covered with functional groups related to sulfur, nitrogen, and oxygen.…”

“…Also, the binding energy peaks at 166.4 and 167.69 eV may be attributed to the SO 3 À (2p 2/3 ), SO 2 2À (2p 1/1 ) or SO 3 2À (2p 2/3 ). [42][43][44] The deconvoluted N 1s spectrum indicated binding energies of 399.88, 397.67 and 400.32 eV (Fig. 1d), which might correspond to the S-N, C-N and N-H functional groups, respectively.…”

The Need for Smart Materials in an Expanding Smart World: MXene-Based Wearable Electronics and Their Advantageous Applications

“…Wet-spinning, electrospinning, and coating are three widely examined textile processing processes that are currently being researched to generate MXene-mediated yarns, fibers, and textiles. 69 In order for MXene to perform its role as a codopant in numerous spinning solutions that contain polymers, it has been utilized as an efficient nanofiller and introduced into these solutions. The outcome is nanofibers that have several functions in contrast to pure polymeric spun fibers.…”

Interfacial Modulation of Ti3C2Tx MXene by Cellulose Nanofibrils to Construct Hybrid Fibers with High Volumetric Specific Capacitance

“…[4] Researches has shown that compounding MXene nanosheets with graphene, carbon nanotubes, conductive polymers, and polymers could improve the shear viscosity of MXene dispersions, which contributes to the formation of macroscopic fibers. [5] The improvement in rheological properties can be attributed to the synergistic effect of the added materials with MXene nanosheets. [6,7] These added materials help to reduce the aggregation and stacking between the MXene nanosheets, allowing a more uniform and stable dispersion.…”