Microstructural analysis of catalyst/catalyst support interfaces of PEFC electrocatalysts
In this study, we observed the catalyst/catalyst support interfaces of Polymer Electrolyte Fuel Cell (PEFC) electrocatalysts by High-Resolution TEM. As the catalyst supports, various carbon nanofibers, including VGCF (Vapor-grown carbon fibers), Platelet type carbon nanofibers and Herringbone-type carbon nanofibers, were applied. We found larger Platinum particles in the Pt/VGCF. The interfacial structure was identified to be the (111)pr//(0001)(Graphite), so that its boundary is relatively stable, whereas particle growth could easily occur. On the contrary, in the Pt/Platelet and in the Pt/Herringbone, well-dispersed Platinum particles were observed, as the catalyst/catalyst support interface is rather unstable. Moreover, twin was observed in the Platinum particles supported on the Herringbone-type nanofibers.
Polymer Electrolyte Fuel Cell Catalyst/catalyst support interface Microstructure High-Resolution TEM
J.-T.Chou K.Sasaki
Kyushu University, Faculty of Engineering, Department of Mechanical Engineering Science, Motooka 744 Kyushu University, Faculty of Engineering, Department of Mechanical Engineering Science, Motooka 744
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1405-1408
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）