Synthesis of few-layer WS2 by jet cavitation as anode material for lithium ion batteries

被引：0
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作者：
Yeh, Yen-Yu [1 ]
Chiang, Wei-Hung [2 ]
Liu, Wei-Ren [1 ]
机构：
[1] Department of Chemical Engineering, Chung Yuan Christian University, No. 200, Chung Pei Road, Chung Li,32023, Taiwan
[2] Department of Chemical Engineering, National Taiwan University of Technology, Taipei, Taiwan
来源：
Journal of Alloys and Compounds | 2020年 / 775卷
关键词：
In this study; we propose a green; facile; low-cost and scalable industrial method to get good quality tungsten disulfide (WS2) with few-layer structure (Mo-WS2) by jet cavitation process (JC). The characterizations of bare WS2 and as-synthesized Mo-WS2 are carried out by X-ray diffraction (XRD); scanning electron microscopy (SEM); transmission electron microscopy (TEM); Raman spectroscopy (Raman); Brunauer-Emmett-Teller (BET) and atomic force microscopy (AFM) to study its surface morphologies; crystal structure; structural defects and distributions of pore size; lateral and thickness. The average thickness of as-synthesized Mo-WS2 is about 2.4 nm (2 and Mo-WS2. The specific capacity of Mo-WS2 delivered a capacity of 581 mAh g−1 and 257 mAh g−1 at 0.1C and 10C; respectively; which are superior to those of bare WS2. AC impedance data further approve that Li+ diffusion coefficient in WS2 could be improved by JC process. All these results confirm that the as-synthesized Mo-WS2 exhibited good electrochemical performance and excellent rate capability performance compared to bare one. These results demonstrate that Mo-WS2 is a promising anode material for lithium-ion batteries. © 2018 Elsevier B.V;
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页码：1251 / 1258
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