W₂C/WS₂ Alloy Nanoflowers as Anode Materials for Lithium-Ion Storage

Recently, composites of MXenes and two-dimensional transition metal dichalcogenides have emerged as promising materials for energy storage applications. In this study, W₂C/WS₂ alloy nanoflowers (NFs) were prepared by a facile hydrothermal method. The alloy NFs showed a particle size of 200 nm-1 μm, which could be controlled. The electrochemical performance of the as-prepared alloy NFs was investigated to evaluate their potential for application as lithium-ion battery (LIB) anodes. The incorporation of W₂C in the WS₂ NFs improved their electronic properties. Among them, the W₂C/WS₂_4h NF electrode showed the best electrochemical performance with an initial discharge capacity of 1040 mAh g^-1 and excellent cyclability corresponding to a reversible capacity of 500 mAh g^-1 after 100 cycles compared to that of the pure WS₂ NF electrode. Therefore, the incorporation of W₂C is a promising approach to improve the performance of LIB anode materials.