我课题组硕士研究生杜立勇在英国皇家化学学会期刊Nanoscale上发表“One-step detonation-assisted synthesis of Fe3O4-Fe@BCNT composite towards high performance lithium-ion batteries（一步爆轰法合成碳纳米管Fe3O4-Fe高性能复合锂离子电池）”的热点文章（Nanoscale 2017, 9(38), 14376-14384）。这项工作成功利用炸药爆轰法合成了碳纳米管-四氧化三铁纳米复合材料，通过在密闭的高压反应釜中加热引爆黑索金和二茂铁混合前体，合成了由竹节状碳纳米管和Fe3O4薄片组成的复合材料。产物形貌良好，尺寸均一，具有优良的电化学性能。该方法操作简单，成本较低，在碳基纳米材料制备方面有着良好的应用前景。第一作者杜立勇是材料学院硕士研究生，指导老师是机电学院陈鹏万教授。

祝贺杜立勇！

论文摘要：

An Fe3O4-Fe@BCNT composite was successfully synthesized via detonation of a mixture of hexogen (C3H6N6O6) and ferrocene (C10H10Fe), in which bamboo-like carbon nanotubes encapsulating iron nanoparticles attached to Fe3O4 flakes (up to 58.1%) were formed. In the detonation process, hexogen was used to generate high temperature and high pressure, while ferrocene was used as a carbon source and catalyst. The recovered Fe3O4-Fe@BCNT composite was characterized by TEM, SEM, XRD, XPS, and Raman spectroscopy. The results indicate that multi-walled carbon tubes with a bamboo-like structure are formed, in which iron nanoparticles are encapsulated. The length of the multi-layered nanotubes (about 18–20 layers) is over 600 nm with diameters in the range of 20–30 nm. The content of Fe3O4 flakes dispersed into the carbon tubes is affected by the atomic ratio of C to Fe. In addition, the Fe3O4-Fe@BCNT composite exhibits excellent electrochemical performance as an anode material in Li-ion batteries. The charge–discharge coulombic efficiency is up to 81.1% in the first cycle. After 100 cycles, the discharge capacity steadily increases up to nearly 800 mA h g−1 due to activation. The rate capability of the Fe3O4-Fe@BCNT composite is also excellent at current densities ranging from 100 to 2000 mA g−1.

（论文链接：http://pubs.rsc.org/en/content/articlelanding/2017/nr/c7nr05362b#!divAbstract ）