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Correlations between hydrogen electrosorption properties and composition of Pd-noble metal alloys

Electrochemistry Communications, ISSN: 1388-2481, Vol: 9, Issue: 4, Page: 671-676
2007
  • 33
    Citations
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  • 17
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Metrics Details

  • Citations
    33
    • Citation Indexes
      33
  • Captures
    17

Article Description

Hydrogen adsorption on and absorption into Pd alloys with other noble metals was studied in acidic solutions (0.5 M H 2 SO 4 ) using cyclic voltammetry. Correlations were found between the potentials of adsorbed/absorbed hydrogen oxidation peaks and surface/bulk compositions of Pd–Rh alloys. The potential of the α–β-phase transition depends linearly on Pd bulk content in Pd–Au, Pd–Rh, Pd–Pt and Pd–Pt–Rh alloys. The obtained relationships can be utilized for the determination of the composition of homogeneous Pd-noble alloys from hydrogen electrosorption experiments.

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