Smart Construction of MoS₂ on Carbon Cloth Flexible Electrodes as High‐Performance Anode for Lithium‐Ion and Sodium‐Ion Batteries

Abstract A self‐supporting flexible electrode, composed of 1T phase MoS₂ nanosheets synthesized on carbon cloth, was fabricated using a one‐step hydrothermal method. This electrode material exhibits outstanding electrochemical performance when utilized as the anode for both lithium‐ion and sodium‐ion batteries. In lithium‐ion batteries, a capacity of approximately 600 mAh g⁻¹ is retained after 150 cycles at a current density of 0.1 A g⁻¹. In sodium‐ion batteries, a high capacity of 500 mAh g⁻¹ is sustained even after 100 cycles. Compared to both powder MoS₂ and carbon cloth with MoS₂ that has been grown and treated through annealing, the self‐supporting flexible electrodes demonstrate enhanced electrochemical performance. This enhanced performance can be attributed to the carbon cloth substrate, which significantly enhances the stability and conductivity of MoS₂. In contrast, annealing induces a transformation of 1T‐phase MoS₂ into the more stable yet less conductive 2H phase, thereby diminishing its electrochemical efficiency. This underscores the benefits of the unannealed MoS₂‐carbon cloth composite material.