Artificial interlayer channels composed of a brush-like polymer: enhanced ion transport of Ti3C2Tx for lithium storage

Abstract

Interlayer structure engineering of Ti₃C₂T_x MXene, constructed by in situ polymerized poly(ethylene glycol)methyl ether acrylate (PPM), significantly enhances the interlayer spacing and ion transport of Ti₃C₂T_x. The PPM, featuring a brush-like polymer, serves as a versatile pillar for artificial interlayer ion channels of Ti₃C₂T_x. As an anode of lithium ion batteries, the resultant Ti₃C₂T_x-PPM delivers excellent cycling stability and rate capability due to accelerated ion diffusion and accessible active sites.