title: Pt-CeO2 coating of carbon nanotubes grown on anode gas diffusion layer of the polymer electrolyte membrane fuel cell.
abstract: The growing of carbon nanotubes on a gas diffusion layer (GDL) was investigated using electron microscopy and photoelectron spectroscopy. The 30 nm thick Pt doped CeO2 layers were deposited by (rf) magnetron sputtering using a CeO2-Pt target on a carbon diffusion layer overgrown by carbon nanotubes. The anode prepared in such a way was tested in the proton exchange membrane fuel cell. Hydrogen/air fuel cell activity measurements normalized to the amount of used Pt revealed high specific power (W mg(-1) Pt). The high activity of this anode with CNT-grown is explained by high specific area of the catalyst, high conductivity of CNT-GDL junction and high activity of platinum present in cationic state Pt2,4+. Very high specific power and low cost together with physical vapor deposition of catalyst makes this anode preparation promising for micro fabrication of fuel cells to power mobile systems.
authors.affiliation: Charles University in Prague, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holesovickách 2, 18000 Prague 8, Czech Republic.
authors.forename: R
authors.initials: R
authors.lastname: Fiala
authors.forename: I
authors.initials: I
authors.lastname: Khalakhan
authors.forename: I
authors.initials: I
authors.lastname: Matolínová
authors.forename: M
authors.initials: M
authors.lastname: Václavů
authors.forename: M
authors.initials: M
authors.lastname: Vorokhta
authors.forename: Z
authors.initials: Z
authors.lastname: Sofer
authors.forename: S
authors.initials: S
authors.lastname: Huber
authors.forename: V
authors.initials: V
authors.lastname: Potin
authors.forename: V
authors.initials: V
authors.lastname: Matolín