MXenes in solid-state batteries: Current status and outlook

MXene, without a doubt, has emerged as the fastest-growing family of materials in the past decade. Its potential in emerging solid-state batteries (SSBs) is particularly promising, as it offers new opportunities to create novel redox-active and ionically permeable phases. The diverse chemical compositions, exceptional electrochemical properties, and surface tunability of MXenes provide fertile ground for composite design, potentially leading to significant advancements in the next generation of SSBs. This review, specifically focusing on SSBs, explores the potential and promises of MXene-based materials in advanced energy storage systems while highlighting the current progress. Additionally, the review discusses the challenges that need to be addressed to fully exploit the potential of MXenes for integration into safe and high-energy density electrochemical storage technologies.