INVESTIGADORES
BARBERO Cesar Alfredo
artículos
Título:
Impedance characteristics of poly-o-aminophenol electrodes
Autor/es:
CESAR A BARBERO; RICARDO TUCCERI; DIONISIO POSADAS; JUANA J SILBER; LEONIDES SERENO
Revista:
ELECTROCHIMICA ACTA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 1995 vol. 40 p. 1037 - 1040
ISSN:
0013-4686
Resumen:
The impedance characteristics of poly-e-aminophenol film electrodes in NaClO, 0.4M + HCIO, 0.1 M electrolyte have been measured in the frequency range 0.01 c f < 10? Hz and at two different thicknesses. The experimental results can be interpreted through a simple charge transfer resistance in parallel with a constant, capacity at high frequencies and the redox capacity in series with the fdm resistance at low frequencies. The analysis of the impedance response allows to the electrochemical rate constant, the concentration of redox centers in the film, the film conductivity and the diffusion coelIicient of the elections to be determined.
