Figure 3
Images of Pt-nanowires grown on the ASP-treated GDLs.
(a–c) SEM images of a 3D nano-architectured catalyst layer with Pt-nanowire arrays in-situ grown on the ASP activated GDL support surface, at three different magnifications. The support area is 5 cm2. (d–f) TEM and HR-TEM images of Pt-nanowires in the nano-architectured catalyst layer. (f) shows a HR-TEM image of the part specified by the white square in (e), indicating the single-crystal nanowires with the growth direction along the <111> axis.
