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    STUDIA CHEMIA - Issue no. 1-2 / 1999  
         
  Article:   SYSTEM NON-LINEARITY COMPENSATION BY MEANS OF NON-LINEAR ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY.

Authors:  ADRIAN NICOARǍ, LIVIU ONICIU. 		 
       
         
  Abstract:  Generally, for the evaluation of thermodynamic and kinetic parameters of an electrochemical system, an impedance spectroscopy method uses perturbation of small amplitude, in order to assures a linear behavior of the investigated process. When the experiment is strongly influenced by noise, a simple possibility to improve measurement quality is to increase the perturbation amplitude. Unfortunately, this easy way to increase the signal to noise ratio can generate non-linearity distortion impeding on the result quality. In this paper, a new procedure for non-linearity correction using different harmonics parameters was proposed and tested for a reversible electrochemical system.  
         
     
         
         
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