| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 746427 | Sensors and Actuators B: Chemical | 2009 | 7 Pages |
Abstract
A physical model describing the I(V) characteristics of planar limiting current oxygen sensors based in an ion-conducting electrolyte is presented. The model focuses on the minimization of the electrochemical potential and the diffusion across a porous layer covering the measuring electrode. The proposed model describes three key phenomena in the response of the sensors: the influence of the polarization resistance on the slope of I(V), the linearity between the limiting current and the diffusivity of the porous layer and a low non-zero current at zero polarization.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Carlos López-Gándara, Francisco M. Ramos, Albert Cirera, Albert Cornet,