Silicon/Graphite/Carbon Nanotubes Composite as Anode for Lithium Ion Battery

Xinxi Li; Guoqing Zhang; Lei Zhang; Meiling Zhong; Xiaojiao Yuan

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Silicon/Graphite/Carbon Nanotubes Composite as Anode for Lithium Ion Battery

机译：硅/石墨/碳纳米管复合材料作为锂离子电池阳极

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Silicon/graphite/ carbon nanotubes (Si/G/CNTs) material was prepared by ball milling and annealingin a special condition. Each sample was characterized by XRD, SEM, and electrochemicaltestament.The results revealed that Si/G/CNTs exhibited an initial specific discharge capacity of 2326 mAh g . After 35 cycles, a high reversible capacity of 1363 mAh g is still retained and thereversible capacity retention is nearly 86%. The improved electrochemical properties were due to theCNTs uniform dispersion in the inter-space of Si and graphite materials. This feature of CNTs not onlyhas excellent electron conductivity, but can also alleviate the SEI film.

机译：硅/石墨/碳纳米管（Si / G / CNTs）材料是在特殊条件下通过球磨和退火制备的。通过X射线衍射（XRD），扫描电镜（SEM）和电化学测试对样品进行了表征。结果表明，Si / G / CNTs的初始放电容量为2326 mAh g。在35次循环后，仍保留了1363 mAh g的高可逆容量，可逆容量保持率接近86％。电化学性能的提高归因于碳纳米管在硅和石墨材料的间隙中的均匀分散。 CNT的这一特征不仅具有优异的电子传导性，而且可以减轻SEI膜。

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《International Journal of Electrochemical Science》 |2015年第4期|共10页
作者
Xinxi Li; Guoqing Zhang; Lei Zhang; Meiling Zhong; Xiaojiao Yuan;
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Silicon/Graphite/Carbon Nanotubes Composite as Anode for Lithium Ion Battery

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