On the Extraction of Double-Layer Capacitances for Nonideal Capacitive Behaviors


ÖZCAN M. , DEHRİ İ. , ERBİL M.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, cilt.51, ss.14061-14064, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 51 Konu: 43
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1021/ie301609j
  • Dergi Adı: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
  • Sayfa Sayısı: ss.14061-14064

Özet

The equation for ideal capacitive behavior of a metal/solution interface was modified in such a way that it allows direct extraction of double-layer capacitance (C-dl) values as a function of the frequency from complex plane plots exhibiting nonideal behavior. Experimental impedance data verified by the Kramers-Kronig (K-K) transforms were presented for a mild steel/hydrochloric acid interface in the absence and presence of an organic additive. The results revealed that the modified equation works well for real systems.