The platinum/titanium-nitride interface: X-ray photoelectron spectroscopy studies

Nikola Mati, Gary S. Chottiner, Frank Ernst, Daniel Alberto Scherson

研究成果: Article査読

抄録

The nature of the interactions between Pt and TiN, a material of interest as a support for proton-exchange-membrane (PEM) fuel cell applications, have been examined in ultrahigh vacuum (UHV) using X-ray photoelectron spectroscopy (XPS). For small amounts of Pt, a reaction takes place yielding XPS features consistent with formation of the intermetallic compound PtTi. Increasing the amount of Pt shifts the 4f 72 electron binding energy toward that of metallic Pt. Complementary angle-resolved XPS revealed that Pt remains in the outer surface region of the resulting multicomponent film. The results show that TiN layers with a thickness of only ca. 1 nm already form an effective barrier to Pt diffusion at room temperature.

本文言語English
ジャーナルElectrochemical and Solid-State Letters
15
6
DOI
出版ステータスPublished - 2012 5 7
外部発表はい

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

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