Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 20, Issue 13, Pages 2297-2313Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0955-2219(00)00111-4
Keywords
electrodes; e.m.f. measurements; Pt; thermodynamic measurements; ZrO2
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The electrode, air (Po(2)approximate to 21.222 kPa)/Pt is often used as a reference electrode in numerous applications in oxygen gauges and coulometric devices which make use of zirconia based solid electrolytes. In recent years, a large number of thermodynamic measurements have been reported using the zirconia electrolyte based e.m.f. technique with this reference electrode. This review summarizes the merits, limitations, mechanistic aspects, precautions to be taken and the sources of error in the use of air/Pt electrode for thermodynamic measurements. In addition, a brief survey of recent applications of air/Pt electrode is presented, together with recommendations for the proper use of the omnipresent air as an oxygen fugacity standard. (C) 2000 Elsevier Science Ltd. All rights reserved.
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