期刊
CHEMISTRY OF MATERIALS
卷 19, 期 17, 页码 4198-4204出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm0707206
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Carbon nanofibers and carbon nanotubes continue to draw unwavering interest from industrial and academic communities because of their fascinating properties and their projected application values. This paper reports a one-step synthesis of high-purity carbon nanofibers with dome-shaped interiors by the noncatalytic thermal decomposition of acetylene over a copper surface at atmospheric pressure. These uniquely shaped carbon nanofibers were impurity free, and their dome-shaped interiors could be repeated with high periodicity throughout the length. In addition, Y-junction and forklike carbon nanofibers with the same internal structure were also formed as byproducts. The growth of these unique carbon nanomaterials could be rationalized by a mechanism based on the autocatalytic chemical vapor deposition of 3D graphene flakes. Preliminary electrochemical measurements indicated that the carbon nanofibers could be used as the active anode material for lithium-ion batteries, delivering good cyclability and a reversible capacity of similar to 260 mAh/g at the high specific current of 100 mA/g.
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