The synthesis, characterization and electrochemical properties of Multi-Wall Carbon Nanotube-induced vanadium oxide nanosheet composite as a novel cathode material for lithium ion batteries

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• 作者：Xiaowei Zhou ; Guangming Wu ; ^{wugm@tongji.edu.cn} ; ^{magnificent2@163.com} ; Guohua Gao ; ^{gao@tongji.edu.cn} ; Chaojun Cui ; Huiyu Yang ; Jun Shen ; Bin Zhou ; Zhihua Zhang
• 关键词：Vanadium oxide nanosheet ; Multi-Wall Carbon Nanotube ; Hydrothermal synthesis ; Electrochemical performance
• 刊名：Electrochimica Acta
• 出版年：2012
• 期刊代码：30_00134686
• 类别：ch
• 出版时间：15 July, 2012
• 卷：74
• 期：Complete
• 页码：32-38
• 文件大小：1418 K

摘要

In this paper, MWCNT (Multi-Wall Carbon Nanotube)-induced vanadium oxide nanosheet composite is synthesized via sol-gel method and subsequent hydrothermal treatment process. TEM and SEM tests confirmed that the synthesized product shows a rectangular sheet-like nanostructure with the length of several micrometers, width of a few hundred nanometers and thickness of dozens of nanometers. The analysis of XRD verified the monoclinic crystal structure of the vanadium oxide nanosheet. The XPS results manifested that V⁴⁺ is predominant in the V element of vanadium oxide nanosheet. The corresponding electrochemical performance examinations indicated this nanosheet-MWCNT composite with distinct single phase transition feature exhibits high specific capacity and good cycling stability due to its sheet-like nanostructure and uniform adding of MWCNTs, which makes this novel vanadium oxide nanosheet-MWCNT composite quite suitable and promising as cathode material for Li⁺ ion batteries applications.