On the faradaic impedance of the electrochemical dissolution of nickel

Authors

  • J. Agrisuelas Departamento de Química-Física. Valencia
  • J. J. García-Jareño Departamento de Química-Física. Valencia
  • J. Gregori Departamento de Química-Física. Valencia
  • D. Giménez-Romero Departamento de Química-Física. Valencia
  • R. González Facultad de Ciencias Médicas. Matanzas
  • M. P. Peña Departamento de Química-Física. Valencia
  • F. Vicente Departamento de Química-Física. Valencia

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1037

Keywords:

EIS, Equivalent circuit, Nickel, Double layer capacity, Charge transfer resistance

Abstract


Consecutive impedance spectra for nickel electrodes in acid medium have been obtained. The first recorded spectrum is fitted to an equivalent circuit with three time constants, if one consider a partially or completely passivated electrode. The second registered spectrum is characteristic to a corrosion kinetic controlled by the transport across a finite layer thickness. The microscopic images show an increase in the irregularity of the electrode surface after the second spectrum is registered. Also, the double layer capacity is considerably increased.

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Published

2005-12-17

How to Cite

Agrisuelas, J., García-Jareño, J. J., Gregori, J., Giménez-Romero, D., González, R., Peña, M. P., & Vicente, F. (2005). On the faradaic impedance of the electrochemical dissolution of nickel. Revista De Metalurgia, 41(Extra), 265–268. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1037

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Articles