Preparation and superficial characterization of drugged cobalt spinel electrodes with copper, Cux Co3-x O4, 0≤x≤1.5

Authors

  • A. La Rosa Toro Facultad de Ciencias, Universidad Nacional de Ingeniería. Lima, Perú.
  • R. Berenguer Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante
  • C. Quijada Departamento de Ingeniería Textil y Papelera, Universidad Politécnica de Valencia
  • F. Montilla Instituto de Biología Molecular y Celular, Universidad Miguel Hernández
  • E. Morallón Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante
  • L. Vázquez Departamento de Química Física e Instituto Universitario de Materiales, Universidad de Alicante

DOI:

https://doi.org/10.21754/tecnia.v16i2.390

Keywords:

cobalt spinel, Co3O4 electrode, XPS surface characterization

Abstract

Cobalt oxide (Co3O4) and copper-doped cobalt oxide (CuxCo3-xO4) films supported on titanium have been prepared by the thermal decomposition method. The electrodes have been characterized by different techniques like scanning Electron Microscopy (SEM), cyclic voltammetry (CV), and X-Ray photoelectron spectroscopy (XPS). The XPS spectra correspond to a characteristic monophasic Cu-Co spinel oxides when x is below 1. However, when the copper content exceeds that for the stoichiometric CuCo2O4 spinel, a new CuOphase segregates at the surface. The analysis of the surface cation distribution in spinel structure indicates that Cu(II) cation are preferently located in octahedral sites of higher electrochemical activity.

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Published

2006-12-01

How to Cite

[1]
A. La Rosa Toro, R. Berenguer, C. Quijada, F. Montilla, E. Morallón, and L. Vázquez, “Preparation and superficial characterization of drugged cobalt spinel electrodes with copper, Cux Co3-x O4, 0≤x≤1.5”, TEC, vol. 16, no. 2, pp. 33–42, Dec. 2006.

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Vol. 16 No. 2 (2006)

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