Structure and Electrocatalysis of Sputtered RuPt Thin-Film Electrodes | Zendy

TaeWook Kim | Zendy; Seong-Ju Park | Zendy; Lindsay E. Jones | Zendy; Michael F. Toney | Zendy; KyungWon Park | Zendy; YungEun Sung | Zendy

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Structure and Electrocatalysis of Sputtered RuPt Thin-Film Electrodes

Author(s) -

TaeWook Kim,

Seong-Ju Park,

Lindsay E. Jones,

Michael F. Toney,

KyungWon Park,

YungEun Sung

Publication year - 2005

Publication title -

the journal of physical chemistry b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.864

H-Index - 392

eISSN - 1520-6106

pISSN - 1520-5207

DOI - 10.1021/jp050616g

Subject(s) - materials science , electrocatalyst , thin film , diffraction , electrode , sputter deposition , electrochemistry , transition metal , sputtering , hexagonal crystal system , catalysis , analytical chemistry (journal) , crystallography , optics , nanotechnology , chemistry , physics , biochemistry , chromatography

The structural and electrochemical properties of RuPt thin-film electrodes fabricated by radio frequency (rf) magnetron sputtering have been investigated. Grazing incidence X-ray diffraction data show a transition from a face-centered cubic (fcc) to hexagonal cubic-packed (hcp) structure as the Ru percentage increases. The transition occurs gradually between 32 and 58% Ru, which is significantly different from the bulk RuPt phase diagram. The catalytic activity of the thin-film electrodes for methanol oxidation shows a broad peak near 40-60% Ru, consistent with previous reports. The relationship between catalytic activity and film structure is discussed and contrasted with previous investigations.

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