Hydrothermal synthesis of ultrathin WS 2 nanosheets as anodes for sodium-ion batteries

Chalcogenide Letters

article

X. H. Zhang¹  C. K. Yan²  H. B. Cao³  H. Tan¹  Z. Wang⁴ 

[1] School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu Province;Jiangsu Laboratory of Lake Environment Remote Sensing Technologies，Huaiyin Institute of Technology, HuaiAn, 223003, Jiangsu Province;School of Computer Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu Province;School of Materials and Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu Province

关键词: WS2;    nanosheets;    Sodium-ion batteries;    Cycle performance;   

DOI  :  10.15251/CL.2022.1911.817

学科分类：物理（综合）

来源: Forum of Chalcogeniders

【 摘 要 】

In this study, ultrathin WS2 nanosheets with an average thickness of about 10 nm were successfully synthesized via a facile hydrothermal method. Their electrochemical properties were systematically investigated by various electrochemical testing techniques, and the morphology and structure were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). When applied as anode for sodium ion batteries, ultrathin WS2 nanosheets exhibit an impressive high-rate capability and good cyclic stability, a reversible capacity of 250 mAh g-1 after the following cycling test of 100 cycles is still achieved at 100 mA g-1 . The excellent rate performance and cycling stability are attributed to better electronic conductivity and well-developed layered structure.

【 授权许可】

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