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Russian Journal of Electrochemistry

, Volume 48, Issue 2, pp 173–180 | Cite as

Peculiarities of the Pt(Cu)/C catalyst formation by galvanic displacement of copper in H2PtCl4 solutions

  • B. I. PodlovchenkoEmail author
  • T. D. Gladysheva
  • A. Yu. Filatov
  • L. V. Yashina
Article

Abstract

Specific features of the formation of a Pt(Cu) catalyst by the galvanic displacement of electroplated copper (carbon support) in a PtCl 4 2− solution are considered. The composition, the structure, and electrochemical properties of Pt(Cu) deposits in different stages of displacement are studied by a complex of methods (SEM, TEM, XPS, voltammetry, etc.). The gradual formation of a stable “core(Pt, Cu)-shell(Pt)” structure with the average atomic ratio Pt : Cu ≈ 3 : 1 is observed. The results for PtCl 4 2− are compared with the analogous results for PtCl 6 2− published earlier. Particularly, the reasons for the differences in the steady state potentials established on the Pt(Cu)st/C electrode in the presence of PtCl 4 2− and PtCl 6 2− are discussed.

Keywords

Pt(Cu)/C catalyst galvanic displacement of copper 

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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • B. I. Podlovchenko
    • 1
    Email author
  • T. D. Gladysheva
    • 1
  • A. Yu. Filatov
    • 1
  • L. V. Yashina
    • 1
  1. 1.Moscow State UniversityVorob’evy Gory, MoscowRussia

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