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An Investigation of Current Reversal Mode for Gas Sensing With a Solid Electroyte
Author(s) -
Hills Matthew Paul,
Schwandt Carsten,
Vasant Kumar Ramachandran
Publication year - 2006
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2006.02079.x
Subject(s) - electrolyte , materials science , yttria stabilized zirconia , cubic zirconia , voltage , current (fluid) , oxygen sensor , fast ion conductor , oxygen , electrical engineering , electrode , chemistry , composite material , engineering , ceramic , organic chemistry
Current reversal mode (CRM) is a dynamic measuring technique, which has the potential to determine accurately the equilibrium emf of a solid electrolyte sensor, while providing additional information regarding sensor resistance. This can be exploited as a diagnostic tool. A fundamental study, using an oxygen sensor with yttria‐stabilized zirconia as the solid electrolyte, has been performed to identify the CRM parameters of frequency and bias voltage for making accurate measurements. A mathematical model has been developed for the application of CRM in terms of an equivalent electrical circuit. The predictions of the model agree well with the experimental data.