MXenes: An Emerging Platform for Wearable Electronics and Looking Beyond

ure 1). Wearable-based devices can be applied to almost every aspect of our life, including medical devices for monitoring and treatment, sports fitness, and communication.1,2 However, the current progress in flexible wearable electronics is still at an early stage of development. Furthermore, the challenge is how to utilize the corresponding electronic equipment with robust, stable, and reliable performance. In comparison with traditional electronic devices, deficient reliability and stability have inhibited the advancement of flexible electronics to date. Among other impor SUMMARY MXenes (e.g., transition metal carbides, nitrides, and carbonitrides) have penetrated in diverse fields of research as wonder materials. The most attractive features of their applications show great promise in energy storage conversion, harvesting, and sensing. Here, the synthesis and novel fabrication techniques of MXenes are introduced, and conventional etching procedures are revisited. Tailoring hybrid mechanisms for MXenes to fine-tune their electronic and chemical properties are discussed in this review. Because of their unique layered structures and intriguing functional properties, MXenes serve as key components in a variety of flexible devices such as supercapacitors, triboelectric nanogenerators, and sensors. Finally, the challenges related to MXenes-based flexible electronics are presented, and viable solutions to overcome the shrouding issues are presented. This provides an insightful outlook for the future development of flexible and wearable applications of MXenes.