Zhang X, Medranda D, Borowiec J, Yan K, Zhang J, Wang S, Boi F S
College of Physical Science and Technology, Sichuan University Chengdu China
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology Wuhan China.
RSC Adv. 2018 Feb 13;8(13):6870-6877. doi: 10.1039/c7ra12626c. eCollection 2018 Feb 9.
In this work we demonstrate an advanced chemical vapour synthesis approach in which the synthesis of Cu-filled carbon nano-onions (CNOs) is achieved by direct sublimation and pyrolysis of a not previously used precursor, namely chloro(1,5-cyclooctadiene)copper(i) dimer. The cross-sectional morphology and filling-ratio of the as grown CNOs were characterized by detailed transmission electron microscopy (TEM), high resolution TEM analyses, Fourier transform and lattice profile analyses. The structural graphitic arrangement and electronic properties of the CNOs were then investigated by means of X-ray diffraction and absorption spectroscopy. The electrochemical impedance spectroscopy and cyclic voltammetry of presented structures were also investigated and reveal a high electrical resistance. Finally the electrochemical performances of this type of CNOs were compared with those of another type of CNOs filled with different metal-carbide materials.
在这项工作中，我们展示了一种先进的化学气相合成方法，其中通过直接升华和热解一种以前未使用过的前驱体，即二氯（1,5-环辛二烯）铜（Ⅰ）二聚体，实现了铜填充碳纳米洋葱（CNOs）的合成。通过详细的透射电子显微镜（TEM）、高分辨率TEM分析、傅里叶变换和晶格轮廓分析对生长的CNOs的横截面形态和填充率进行了表征。然后通过X射线衍射和吸收光谱研究了CNOs的结构石墨排列和电子性质。还研究了所呈现结构的电化学阻抗谱和循环伏安法，结果显示其具有高电阻。最后，将这种类型的CNOs的电化学性能与另一种填充不同金属碳化物材料的CNOs的电化学性能进行了比较。
