MXenes as Li-Ion Battery Electrodes: Progress and Outlook

Abstract

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 Liion batteries.

Advanced Insights on MXenes: Categories, Properties, Synthesis, and Applications in Alkali Metal Ion Batteries

“…In addition, MXenes are inclined to easily oxidize unstable surfaces, and lamellar structure agglomeration or stack, which prevent their practical application prospect for energy storage. The MXene-based composites integrating the advantages of electrical conductivity of MXenes and the high capacity of active materials have been widely studied for LIBs . Besides, due to the active surface chemistry, the dominant pseudocapacitive behavior of MXenes is conducive to achieving high-rate performance.…”

Review and Perspectives on Preparation Strategies and Applications of Ti3C2 MXene for Li Metal Batteries/Li–S Batteries

“…The primary distinction between MXene and the MAX phase of the precursor lies in the expanded interlayer spacing and the abundance of functional groups on the surface of MXene. T x , on the other hand, signifies the type of surface functional group, such as −O, −OH, −F, −Cl, etc. − MXene finds widespread applications in supercapacitors, batteries, and electrocatalysis due to its diverse elemental compositions and exceptional lamellar structure. , Despite being a relatively recent concept, MXene’s distinctive layered structure positions it as a promising material for various chemical applications within the realm of 2D materials. Common MXene materials include Ti 3 C 2 T x , Ti 2 CT x , V 2 CT x , (Ti 0.5 Nb 0.5 ) 2 CT x , (V 0.5 Cr 0.5 ) 3 C 2 T x , with Ti 3 C 2 T x being one of the most extensively studied. ,, With the progress in science and technology and the implementation of peak carbon and carbon-neutral policies, the country is pushing for the development of new energy storage solutions.…”