The Future of MXene Fibers.

Since the first report on MXene-coated fibers in 2017, the field has grown rapidly, with over 1500 publications on fiber-related advancements. Improved understanding of MXene's colloidal dispersions has led to new fabrication techniques, resulting in fibers with exceptional electrical conductivity and electrochemical properties. These fibers show promise in energy storage, wearable electronics, motion and strain sensors, and electromagnetic interference shielding. Ongoing research is focused on improving their mechanical properties and fabrication methods, as well as new applications. As new MXene compositions and their properties are discovered, the field continues to open new avenues for innovation in functional fibers and textiles enabled using MXenes. This perspective explores the broad applications of MXene fibers, often overlooked in fiber-focused reviews, and emphasizes the need to address gaps in synthesis, scalability, and long-term performance to fully realize their potential.