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Effects of Preparation Temperatures on Lithium Insertion Properties of Carbon Nanotubes WU Guotao, CHEN Maohui, ZHU Guangming, YOU Jinkua, LIN Zugeng Abstract In the present work, carbon nanotubes were produced by catalytic decomposition of methane at low temperature range (500～700 °C) on Ni-catalysts. Structures and lithium insertion properties of these carbon nanotubes were characterized by X-ray diffraction (XRD), Raman spectroscopy and electrochemical measurements, respectively. The results showed that preparation temperatures of carbon nanotubes have remarkable effects on both specific capacity and cycle life. The mechanism of lithium insertion into carbon nanotubes is similar to that of carbon produced by the pyrolysis of hydrocarbon below 1000°C.Key words Carbon nanotube, Catalytic decomposition, Methane, Lithium ion batteries 碳纳米管制备温度对其嵌锂性能的影响 吴国涛 陈茂惠 朱光明 尤金跨
林祖赓** 摘要 本文利用XRD和RAMAN等方法对甲烷在500～700 °C范围催化裂解制备的碳纳米管结构进行了表征，同时考察了其电化学嵌锂性能。结果表明碳纳米管的制备温度对其锂嵌入脱出电位、可逆容量和充放电循环性能均有显著的影响，并且其嵌锂机理类似于低温热解碳(低于1000°C)。关键词 碳纳米管 催化裂解 甲烷 锂离子电池 吴国涛 男，29岁，博士，主要从事锂离子电池碳负极材料研究。
**联系人 |