本文以二茂铁为催化剂、三聚氰胺为氮源、甲烷为碳源,采用浮动催化剂化学气相沉积法制备了氮掺杂单壁碳纳米管.通过控制三聚氰胺的挥发量,实现了氮原子在单壁碳纳米管石墨网格中的微量掺杂,获得了高质量的氮掺杂单壁碳纳米管,其抗氧化温度高达795°C.这种微量氮掺杂使得单壁碳纳米管的直径变小、直径分布范围变窄,并表现出金属性行为及提高的氧还原性能. In this paper, nitrogen-doped single-walled carbon nanotubes were prepared by using the catalyst of ferrocene as a catalyst, melamine as a nitrogen source and methane as a carbon source by floating catalyst chemical vapor deposition method. By controlling the amount of volatilization of melamine, Micro-doping of carbon nanotubes in graphite grids resulted in high quality nitrogen-doped single-walled carbon nanotubes with an anti-oxidation temperature of up to 795 ° C. This trace nitrogen doping made the diameter of single-walled carbon nanotubes Small, narrower diameter distribution, and shows metallic behavior and improved oxygen reduction performance.