The preparation of mesoporous SnO2 nanotubes by carbon nanofibers template and their lithium storage properties

The preparation of mesoporous SnO2 nanotubes by carbon nanofibers template and their lithium storage properties
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碳纳米纤维模板制备介孔SnO2纳米管及其储锂性能

DOI:
10.1016/j.electacta.2013.03.036
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发表时间:
2013-05
影响因子:
6.6
通讯作者:
Ben Q. Li
Ben Q. Li
中科院分区:
材料科学2区
文献类型:
--
作者:
Shujiang Ding;Zhenglong Yang;Wei Yu;Ben Q. Li

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以碳纤维为模板,通过简单的溶液法制备了介孔SnO2纳米管,然后在800℃下焙烧2小时。用扫描电子显微镜、透射电子显微镜、X射线衍射仪、热重分析和氮气吸附等手段对纳米管进行了表征。通过循环伏安(CV)和恒流充放电电压测试,研究了其作为锂离子电池负极的电化学性能。由于其独特的结构(介孔壁、内部孔洞和开放端),所得到的介孔SnO2纳米管在400mAg−1的高电流密度下表现出高达50次循环的585mAhg−1的可逆容量。
Mesoporous SnO2nanotubes are prepared by templating against carbon fibers through a facile solution approach followed by calcination at 800°C for 2h. The nanotubes are characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and nitrogen adsorption. The electrochemical performances as the anodes of lithium-ions batteries are studied by the cyclic voltammogram (CV) and galvanostatic discharge–charge voltage tests. Because of its unique structure (the mesoporous wall, internal void and open ends), the as-obtained mesoporous SnO2nanotubes demonstrate a reversible capacity of 585mAhg−1up to 50 cycles at a high current density of 400mAg−1.
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