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

Thang Phan Nguyen; Il Tae Kim

doi:10.3390/nano10071336

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

Nanomaterials (Basel). 2020 Jul 9;10(7):1336. doi: 10.3390/nano10071336.

Authors

Thang Phan Nguyen¹, Il Tae Kim¹

Affiliation

¹ Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Korea.

Abstract

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.

Keywords: W2C; WS2; hydrothermal; lithium-ion batteries; nanoflowers.

Abstract

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