标题
作者
作者:Ou, X (Ou, Xing)[1 ]; Liang, XH (Liang, Xinghui)[1 ]; Zheng, FH (Zheng, Fenghua)[1 ]; Pan, QC (Pan, Qichang)[1 ]; Zhou, J (Zhou, Jun)[1 ]; Xiong, XH (Xiong, Xunhui)[1 ]; Yang, CH (Yang, Chenghao)[1 ]; Hu, RZ (Hu, Renzong)[2 ]; Liu, ML (Liu, Meilin)[1,3 ]
期刊信息
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文献类型:Article
摘要
Nanostructured V5S8/graphite hybrid (V5S8/C) has been synthesized by a facile method combined solid state sulfuration with liquid exfoliation. The SEM and TEM results reveal that the V5S8/C hybrid is consisted of ultrathin V5S8 nanosheet and graphite flake. Due to efficient exfoliation of V5S8 sheet and effective incorporation of graphite flake, excellent electrochemical property of V5S8/C hybrid is demonstrated for lithium ion batteries. Surprisingly, V5S8/C hybrid delivers a high specific capacity of 1112 mAh g(-1) at 0.1 A g(-1); even up to 1.0 A g(-1), a high capacity of 846 mAh g(-1) is achieved after 700 cycles. Moreover, in situ XRD analysis indicates that the high capacity of V5S8/C is derived from the combined Li+ intercalation and conversion reactions. While the excellent cycle performance and superior rate capability are attributed to the reduced stacking of the V5S8 layers and overcoating of conductive graphite material, which can relax the strain and lower the barrier for Li+ insertion and extraction. (C) 2017 Elsevier B.V. All rights reserved.
关键词
作者关键词:V5S8/graphite; Liquid exfoliation; Anode; Lithium ion batteries; In situ X-ray diffraction
作者信息
通讯作者地址:Yang, CH (通讯作者)
 | South China Univ Technol, Guangzhou Key Lab Surface Chem Energy Mat, New Energy Res Inst, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China. |
地址:
电子邮件地址:esyangc@scut.edu.cn
出版商
类别分类
研究方向:Engineering
Web of Science 类别:Engineering, Environmental; Engineering, Chemical