Recent Progress of MXene-Based Materials as Anodes in Sodium-Ion Batteries

As a competitive next-generation energy storage technology, the sodium-ion battery has been intensively studied by researchers. However, sodium-ion batteries (SIBs) suffer inherent issues, including poor cycle stability and slow electrochemical kinetics. MXenes, newly discovered two-dimensional material, have been considered promising potential materials for sodium storage to overcome these problems owing to their robust mechanical properties, good electronic conductivity, and tunable composition and morphology. This review discusses the current research on architecture, properties, synthetic strategies, and sodium storage mechanisms. Then, the recent progress on MXene-based anodes for SIBs, including pristine MXenes, modified pure-phase MXenes, and MXene-containing composites, are comprehensively discussed and summarized. Finally, the existing problems and challenges faced by studies on MXene-based anodes and the prospects for future research direction are presented. With systemic analysis of MXene-based materials, it is expected that this review may guide their further exploration and practical applications in the field of SIBs.

Automated summary

As a competitive next-generation energy storage technology, sodium-ion batteries (SIBs) have inherent issues such as poor cycle stability and slow electrochemical kinetics. MXenes, a newly discovered two-dimensional material, show promise as potential materials for sodium storage due to their robust mechanical properties, good electronic conductivity, and tunable composition and morphology. This review discusses the current research on architecture, properties, synthetic strategies, and sodium storage mechanisms of MXenes. It also comprehensively reviews the recent progress on MXene-based anodes for SIBs, including different types of MXenes and MXene-containing composites. Finally, it presents the existing problems, challenges, and prospects for future research direction of MXene-based anodes, aiming to guide further exploration and practical applications of MXenes in the field of SIBs.