Pt_(0.55)Co_(0.45)合金应用不同的碳基体作为质子交换膜燃料电池阴极催化剂的研究  

Pt_(0.55)Co_(0.45)/C Catalysts Using Different Carbon Supports for the Cathode of the Proton Exchange Membrane Fuel Cell(PEMFC)

作　　者：王定然[1] 王方[1] 

机构地区：[1]张家港出入境检验检疫局,江苏张家港215633

出　　处：《广东化工》2012年第16期47-48,共2页Guangdong Chemical Industry

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.

关 键 词：Pt0.55Co0.45合金 质子交换膜燃料电池 氧还原反应 双壁碳纳米管 

分 类 号：O643.1[理学—物理化学]