W 2 C/WS 2 Alloy Nanoflowers as Anode Materials for Lithium-Ion Storage.

Authors :: Nguyen TP
Kim IT
Source :: Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2020 Jul 09; Vol. 10 (7). Date of Electronic Publication: 2020 Jul 09.
Publication Year :: 2020
Abstract: Recently, composites of MXenes and two-dimensional transition metal dichalcogenides have emerged as promising materials for energy storage applications. In this study, W <subscript>2</subscript> C/WS <subscript>2</subscript> 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 W <subscript>2</subscript> C in the WS <subscript>2</subscript> NFs improved their electronic properties. Among them, the W <subscript>2</subscript> C/WS <subscript>2</subscript> &#95;4h NF electrode showed the best electrochemical performance with an initial discharge capacity of 1040 mAh g <superscript>-1</superscript> and excellent cyclability corresponding to a reversible capacity of 500 mAh g <superscript>-1</superscript> after 100 cycles compared to that of the pure WS <subscript>2</subscript> NF electrode. Therefore, the incorporation of W <subscript>2</subscript> C is a promising approach to improve the performance of LIB anode materials.