MXenes as Li-Ion Battery Electrodes: Progress and Outlook

MXenes, in view of their extraordinary properties, such as layered structure, metal-like high thermal stability, good mechanical strength, high conductivity, presence of active sites, and terminal functional groups, have received the utmost importance as outstanding materials for energy storage applications such as supercapacitors and metal-ion batteries. Even though MXenes have promising applications in Li-ion batteries due to their high Li-ion storage capacity, their performance is not satisfactory compared to the presently used state-of-the-art electrodes. Pure MXenes suffer from restacking of their sheets, and to overcome this issue and to enhance their performance, attempts have been made to modify their surfaces and/or surface terminal groups. Synthesis of MXene-based composites has produced attractive electroactive materials. The present review focuses on MXene-based electrode materials for applications in Li-ion batteries.