Fiala R, Khalakhan I, Matolínová I, Václavů M, Vorokhta M, Sofer Z, Huber S, Potin V, Matolín V
Charles University in Prague, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holesovickách 2, 18000 Prague 8, Czech Republic.
J Nanosci Nanotechnol. 2011 Jun;11(6):5062-7. doi: 10.1166/jnn.2011.4128.
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.
利用电子显微镜和光电子能谱研究了在气体扩散层（GDL）上生长碳纳米管的情况。通过使用CeO₂ - Pt靶材，采用（射频）磁控溅射在由碳纳米管过度生长的碳扩散层上沉积30纳米厚的铂掺杂CeO₂层。以这种方式制备的阳极在质子交换膜燃料电池中进行了测试。将氢/空气燃料电池活性测量值归一化到所用铂的量后，显示出高比功率（W mg⁻¹ Pt）。这种具有碳纳米管生长的阳极的高活性可归因于催化剂的高比表面积、碳纳米管 - 气体扩散层结的高导电性以及阳离子态Pt²⁺、Pt⁴⁺中铂的高活性。非常高的比功率和低成本，以及催化剂的物理气相沉积，使得这种阳极制备方法对于为移动系统供电的燃料电池的微制造具有广阔前景。
