Pt and Sn Doped Sputtered CeO2 Electrodes for Fuel Cell Applications
Pt and Sn Doped Sputtered CeO2 Electrodes for Fuel Cell Applications
复制标题
DOI：
10.1002/fuce.200900036
复制
发表时间：
2010-02
期刊：
影响因子：
2.8
通讯作者：
V. Matolín;M. Cabala;I. Matolínová;M. Skoda;M. Václavů;K. Prince;T. Skála;T. Mori;H. Yoshikawa;Y. Yamashita;S. Ueda;Keisuke L. I. Kobayashi
中科院分区：
文献类型：
--
作者：
V. Matolín;M. Cabala;I. Matolínová;M. Skoda;M. Václavů;K. Prince;T. Skála;T. Mori;H. Yoshikawa;Y. Yamashita;S. Ueda;Keisuke L. I. Kobayashi
用光电子能谱研究了Pt与CeO 2层的相互作用。采用CeO 2-Pt-Sn复合靶材，在Si（001）衬底和聚合物膜燃料电池碳扩散层上，通过射频磁控溅射法同时沉积了30 nm厚的Pt和Sn掺杂CeO 2薄膜。实验室XPS和同步辐射软X射线和硬X射线光电子能谱显示氧化铈与完全电离的Pt 2+，4+物种的形成，并与Pt 4+嵌入在膜体中。氢/空气燃料电池的活性测量标准化的Pt用量显示高达5.4 × 104 mW mg-1（Pt）的高比功率。这些材料的活性被解释为嵌入的Ptn+阳离子的强活性。
The interaction of Pt with CeO2 layers was investigated by using photoelectron spectroscopy. Thirty‐nanometre‐thick Pt and Sn doped CeO2 layers were deposited simultaneously by rf‐magnetron sputtering on a Si(001) substrate and a carbon diffusion layer of a polymer membrane fuel cell by using a composite CeO2–Pt–Sn target. The laboratory XPS and synchrotron radiation soft X‐ray and hard X‐ray photoemission spectra showed the formation of cerium oxide with completely ionised Pt2+,4+ species, and with Pt4+ embedded in the film bulk. Hydrogen/air fuel cell activity measurements normalised to the amount of Pt used revealed high specific power of up to 5.4 × 104 mW mg–1 (Pt). The activity of these materials is explained by the strong activity of embedded Ptn+ cations.