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首页> 外文期刊>Journal of Materials Research >One-pot synthesis of core-shell structured Sn/carbon nanotube by chemical vapor deposition and its Li-storage properties
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One-pot synthesis of core-shell structured Sn/carbon nanotube by chemical vapor deposition and its Li-storage properties

机译：化学气相沉积一锅法合成核壳结构锡/碳纳米管及其储锂性能

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摘要

Core-shell structured Sn/carbon nanotube (CNT) was prepared by one-pot chemical vapor deposition (CVD) method in N_2/C_2H_2 (10% C_2H_2) using nanosized SnO_2 as the starting material. The obtained one-dimensional material is composed of a disordered carbon shell and a single-crystalline Sn nanorod core. The diameter of the Sn nanorod and the thickness of the carbon shell are around 40-50 and 4-5 nm, respectively, when the CVD reaction was carried out at 650 °C for 2 h. The core-shell structured Sn/CNT exhibits improved electrochemical performance compared with bare Sn with a diameter of around 100 nm. A reversible capacity of around 350 mAh/g can be retained after 20 cycles at 50 mA/g for Sn/CNT, while for bare Sn, the capacity drops rapidly to 100 mAh/g after the same cycles.
机译：核壳结构的Sn /碳纳米管（CNT）是通过一锅化学气相沉积（CVD）法在N_2 / C_2H_2（10％C_2H_2）中以纳米尺寸的SnO_2为起始原料制备的。获得的一维材料由无序碳壳和单晶锡纳米棒核组成。当在650℃下进行2小时的CVD反应时，Sn纳米棒的直径和碳壳的厚度分别约为40-50nm和4-5nm。与直径约100 nm的裸锡相比，核壳结构的Sn / CNT表现出改善的电化学性能。 Sn / CNT在50 mA / g的20个循环后，可保持约350 mAh / g的可逆容量，而对于裸锡，在相同的循环后，容量迅速下降至100 mAh / g。

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  • 来源
    《Journal of Materials Research》 |2011年第21期|p.2719-2724|共6页
  • 作者

    Yunxiao Zheng; Jian Xie; Wentao Song; Shuangyu Liu; Gaoshao Cao; Xinbing Zhao;

  • 作者单位

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

    Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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