摘要
分别选用Vulcan XC-72和双壁碳纳米管(DWCNTs)作为碳基体,采用化学还原法制备了20%的Pt0.55Co0.45/C催化剂。合成的材料Pt0.55Co0.45/C采用XRD和TEM手段进行表征,电化学性能通过循环伏安(CV)和稳态技术进行了检测。电化学测试结果表明,Pt0.55Co0.45/DWCNTs对氧还原催化性能优于Pt0.55Co0.45/Vulcan XC-72,并且DWCNTs具有比Vulcan XC-72更好的稳定性。这说明DWCNTs是比Vulcan XC-72更有效地催化剂载体。
20 wt% Pt0.55Co0.45/C catalysts were prepared using a chemical reduction method, with Vulcan XC-72 and double walled carbon nanotubes（DWCNTs） as the carbon support, respectively, and compared to 20 wt% Pt/C（using Vulcan XC-72 carbon as support）. The materials were characterized by X-ray diffraction, and transmission electron microscopy （TEM）. The electrochemical performance of the Pt0.55Co0.45/C catalysts was evaluated by cyclic voltammetry, and by steady-state measurements. Electrochemical measurements indicate that the Pt0.55Co0.45 nanocatalysts exhibited improved activity in the oxygen reduction reaction （ORR） on DWCNTs compared with those on Vulcan XC-72 carbon, and DWCNTs could potentially provide much higher durability than XC-72. This suggests that DWCNTs is a more effective catalyst support than Vulcan XC-72 carbon.
出处
《广东化工》
CAS
2012年第16期47-48,共2页
Guangdong Chemical Industry
