Fabrication of WS₂-nanoflowers@rGO composite as an anode material for enhanced electrode performance in lithium-ion batteries

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• 作者：Sangui Liu ; Bolei Shen ; Yubin Niu ; Maowen Xu ; ^{xumaowen@swu.edu.cn}
• 关键词：WS2-NF@rGO ; Three dimensional ; Lithium-ion batteries ; Graphene
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：488
• 期：Complete
• 页码：20-25
• 全文大小：1876 K
• 卷排序：488

文摘

In this paper, we descried a simple method to fabricate three-dimensional (3D) composite materials, WS2-nanoflowers @ reduced graphene oxide (WS2-NF@rGO), in which rGO crossed-link the isolated WS2-NF to construct a 3D conductive network and provided protection against the volume changes of WS2 during electrochemical processes simultaneously. This unique structure of the WS2-NF@rGO composite could not only promote both ion and electron diffusion, but also enhance the electrode stability, thus obtaining a high-capacity and long-cycle anode material for lithium-ion batteries. As a result, the WS2-NF@rGO exhibited a reversible capacity of 730 mA h g−1 after 150 cycles at 100 mA g−1 and maintained a capacity of higher than 260 mA h g−1 at 2 A g−1, thus exhibiting great potential as an anode material for lithium storage.