中空石墨碳材料作为电催化剂载体在直接乙醇燃料电池中的应用  

Hollow Graphitic Carbon as Electrocatalyst Support for Direct Ethanol Fuel Cells

作　　者：贾子麒[1] 孙公权[1] 曹雷[1] 汪国雄[1] 辛勤[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《催化学报》2008年第2期197-201,共5页

基　　金：中国科学院知识创新工程领域前沿项目(K2006D5);国家高技术研究发展计划(863计划,项目2006AA05Z137)

摘　　要：以间苯二酚、苯酚与甲醛为前体,合成了一种中空石墨碳材料(hollow graphitic carbon,HGC).透射电镜(TEM)、N2吸附-脱附和Raman光谱测试结果表明,所制备的HGC为中孔结构,平均孔径为36nm.与商品Vulcan XC-72R相比,HGC中孔结构丰富,石墨化程度高.分别以HGC和XC-72R为载体制备了总金属载量为45%的PtSn/C电催化剂,X射线衍射和TEM结果表明这两个样品的平均粒径和晶格常数相近.单池性能测试表明,以45%PtSn/HGC为阳极催化剂的直接乙醇燃料电池的最大功率密度达到了62mW/cm2,与PtSn/XC-72R的54mW/cm2相比提高了近15%.A hollow graphitic carbon （HGC） material was synthesized using resorcinol, phenol, and formaldehyde. The characterization by transmission electron microscopy （TEM）, N2 adsorption-desorption, and Raman spectroscopy showed that the highly graphitized HGC is a mesoporous material with an average pore size of 36 nm. Compared with the commercial Vulcan XC-72R carbon, HGC has more mesopore volume and higher graphitic character. The 45 % PtSn/C electrocatalysts were prepared using HGC and XC-72R as supports and characterized by X-ray diffraction and TEM. These two kinds of electrocatalysts have similar particle size and lattice parameter. The single cell test of DEFCs （direct alcohol fuel cells） showed that the peak power density is increased from 54 mW/cm^2 of PtSn/XC-72R to 62 mW/cm^2 of PtSn/HGC.

关 键 词：电催化剂 中空石墨碳 直接乙醇燃料电池 碳载体 

分 类 号：TM911.4[电气工程—电力电子与电力传动]