碳化钴/氮掺杂碳纳米管复合材料在酸性介质中的氧还原特性研究

Research of Cobalt Carbide/Nitrogen-doped Carbon Nanotube Composite for Electrocatalytic Oxygen Reduction in Acidic Medium

采用高温退火法分解碳纳米管(CNTs)和含钴大环化合物[Cobalt(Ⅱ)meso-tetrakis(4-methoxyphonyl)-porpine]的混合物,制备得到碳化钴/氮掺杂碳纳米管复合材料。SEM、XRD等手段证实碳化钴成功地复合到氮掺杂的碳纳米管中。LSV等电化学测试表明,其在酸性条件下表现出可与商业Pt/C相比拟的催化活性、稳定性和抗甲醇毒性,甚至优于商业Pt/C。

With high temprature annealing carbon nanotubes（CNTs） and cobalt（Ⅱ ） meso-tetrakis（4-methoxyphonyl）porpine（CoPy）, cobalt carbide/nitrogen-doped carbon nanotube （CoxC/N-CNT） composite was synthesized. SEM and TEM, et al. results proved that nitrogen had been successfully doped into carbon nanotubes and cobalt carbide had been uniformly dispersed in reticular structure of carbon nanotubes. Electrchemical performance tests confirmed that cobalt carbide/nitrogen-dopedcarbon nanotube had an excellent oxygen reduction electrocatalytic acticity, durability, and ability to resist methnol toxicity than Pt/C in acidic medium.