Abstract

The possibility of obtaining intercalation compound with cobalt based on multiwall carbon nanotubes is considered. For intercalation the two-stage method using an intercalation compound with potassium as a precursor has been chosen. To determine the structural features of the obtained compound and the distribution of the metal in it the intercalated multiwall carbon nanotubes have been studied by X-ray diffraction, electron microscopy and thermagnetometry methods. It is shown that intercalated by cobalt multiwall carbon nanotubes are third stage compounds in which atomically distributed cobalt is into the interplanar space of nanotubes. Studies of electrical resistance have found that for intercalated multiwall carbon nanotubes, in contrast to graphite intercalation compounds, resistivity increases after intercalation process. The changes of conduction mechanisms in multiwall carbon nanotubes after intercalation have been also analyzed.

摘要

考虑了获得基于多壁碳纳米管的钴插层化合物的可能性。对于插层，选择了使用以钾为前体的插层化合物的两步法。为了确定所得化合物的结构特征和金属在其中的分布，已经通过 X 射线衍射、电子显微镜和热磁测量方法研究了嵌入的多壁碳纳米管。结果表明，由钴插入的多壁碳纳米管是第三阶段化合物，其中原子分布的钴进入纳米管的平面空间。电阻研究发现，对于嵌入的多壁碳纳米管，与石墨嵌入化合物相反，嵌入过程后电阻率增加。