Pt and Sn Doped Sputtered CeO 2  Electrodes for Fuel Cell Applications | Zendy

Matolín V. | Zendy; Cabala M. | Zendy; Matolínová I. | Zendy; Škoda M. | Zendy; Václavů M. | Zendy; Prince K.C. | Zendy; Skála T. | Zendy; Mori T. | Zendy; Yoshikawa H. | Zendy; Yamashita Y. | Zendy; Ueda S. | Zendy; Kobayashi K. | Zendy

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Pt and Sn Doped Sputtered CeO 2 Electrodes for Fuel Cell Applications

Author(s) -

Matolín V.,

Cabala M.,

Matolínová I.,

Škoda M.,

Václavů M.,

Prince K.C.,

Skála T.,

Mori T.,

Yoshikawa H.,

Yamashita Y.,

Ueda S.,

Kobayashi K.

Publication year - 2010

Publication title -

fuel cells

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.485

H-Index - 69

eISSN - 1615-6854

pISSN - 1615-6846

DOI - 10.1002/fuce.200900036

Subject(s) - x ray photoelectron spectroscopy , materials science , substrate (aquarium) , sputter deposition , analytical chemistry (journal) , sputtering , anode , doping , electrode , cerium , hydrogen , carbon fibers , cerium oxide , chemical engineering , oxide , composite number , thin film , nanotechnology , chemistry , optoelectronics , metallurgy , composite material , oceanography , organic chemistry , chromatography , engineering , geology

The interaction of Pt with CeO 2 layers was investigated by using photoelectron spectroscopy. Thirty‐nanometre‐thick Pt and Sn doped CeO 2 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 CeO 2 –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 Pt 2+,4+ species, and with Pt 4+ 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 × 10 4 mW mg –1 (Pt). The activity of these materials is explained by the strong activity of embedded Pt n + cations.

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