Stretchable MXenes for Supercapacitors: A Review

The rapid advancement of wearable and implantable technologies drives the need for stretchable energy storage systems with strong electrochemical and mechanical performance. MXenes, 2D transition metal carbides/nitrides, are promising materials due to their high conductivity, tunable chemistry, and scalable fabrication. While effective in flexible devices, adapting MXenes for stretchable architectures remains a key challenge. This review highlights emerging strategies to develop MXene-based stretchable composites through various designs for supercapacitors. However, challenges such as interfacial stability, scalability, and durability under repeated deformation persist. We have summarized the transitioning of MXene-based stretchable composites from lab-scale to commercial products. Finally, this work outlines a path toward next-generation, stretchable energy storage solutions for wearable electronics, robotics, and othertechnologies.