skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference.

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE
OSTI Identifier:
934424
Report Number(s):
ANL/ET/JA-56920
Journal ID: ISSN 0925-4005; SABCEB; TRN: US200814%%219
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Sens. Actuators B; Journal Volume: 124; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
47 OTHER INSTRUMENTATION; ZIRCONIUM OXIDES; OXYGEN; SENSORS; GAS ANALYSIS; CALIBRATION STANDARDS; DESIGN

Citation Formats

Spirig, J. V., Ramamoorthy, R., Akbar, S. A., Dutta, P. K., Routbort, J. L., Singh, D., Energy Technology, and Ohio State Univ.. High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference.. United States: N. p., 2007. Web. doi:10.1016/j.snb.2006.12.022.
Spirig, J. V., Ramamoorthy, R., Akbar, S. A., Dutta, P. K., Routbort, J. L., Singh, D., Energy Technology, & Ohio State Univ.. High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference.. United States. doi:10.1016/j.snb.2006.12.022.
Spirig, J. V., Ramamoorthy, R., Akbar, S. A., Dutta, P. K., Routbort, J. L., Singh, D., Energy Technology, and Ohio State Univ.. Mon . "High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference.". United States. doi:10.1016/j.snb.2006.12.022.
@article{osti_934424,
title = {High temperature zirconia oxygen sensor with sealed metal/metal oxide internal reference.},
author = {Spirig, J. V. and Ramamoorthy, R. and Akbar, S. A. and Dutta, P. K. and Routbort, J. L. and Singh, D. and Energy Technology and Ohio State Univ.},
abstractNote = {No abstract prepared.},
doi = {10.1016/j.snb.2006.12.022},
journal = {Sens. Actuators B},
number = 2007,
volume = 124,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
  • A compact oxygen sensor is provided, comprising a mixture of metal and metal oxide an enclosure containing said mixture, said enclosure capable of isolating said mixture from an environment external of said enclosure, and a first wire having a first end residing within the enclosure and having a second end exposed to the environment. Also provided is a method for the fabrication of an oxygen sensor, the method comprising confining a metal-metal oxide solid mixture to a container which consists of a single material permeable to oxygen ions, supplying an electrical conductor having a first end and a second end,more » whereby the first end resides inside the container as a reference (PO.sub.2).sup.ref, and the second end resides outside the container in the atmosphere where oxygen partial pressure (PO.sub.2).sup.ext is to be measured, and sealing the container with additional single material such that grain boundary sliding occurs between grains of the single material and grains of the additional single material.« less
  • It has been reported that stabilized-zirconia oxygen sensors sometimes give non-Nernstian response when oxidizable gases, such as CO and H{sub 2}, coexist with O{sub 2}. Such behavior is usually observed at low temperature below 400{degrees}C when Pt is used as a sensing electrode, and the sensing electrode potential involved is mixed potential. Recently, it was found that a small amount of H{sub 2}S or NO{sub x} existing in air could be detected by a zirconia-based sensor attached with an oxide electrode, such as WO{sub 3} or CdMn{sub 2}O{sub 4}, through mechanisms involving mixed potential. These results suggest the importance ofmore » oxide electrodes for the mixed-potential type gas sensors. On this background, the authors have carried out a search for the electrode oxides adequate for detecting oxidizable gases at high temperature. As a result, ZnO was found to work as an excellent electrode for selective H{sub 2} monitoring, as described below.« less
  • Oxygen sensors using stabilized ZrO{sub 2} as the electrolyte are used for steel making and heat engines to obtain high performance. An oxygen sensor is proposed which is represented by an electrochemical cell metal {vert_bar} oxide scale {vert_bar} sensing electrode, where the metal, its oxide scale, and sensing electrode work as reference electrode, electrolyte, and sample electrode, respectively. Here the oxide scale is required to be an oxide-ion conductor, and the sensing electrode is not to be reactive with the oxygen. It is expected that the electrolyte is self-restorative because it can be reformed by high-temperature oxidation. The electromotive forcemore » (EMF) measurements were carried out at 873 K with cells using zirconium as the metal electrode and Pt as the sensing electrode. At p{sub o{sub 2}} = 1--10{sup {minus}4} atm, the EMF vs. log p{sub o{sub 2}} plot lies on a straight line and its gradient is 2.303 RT/4F, suggesting unity of the oxide-ion transference number at the surface of the scale. The EMF steeply decreases with decreasing p{sub o{sub 2}} at p{sub o{sub 2}} < 10{sup {minus}4} atm, which cannot be explained by the increase in the electronic conductivity. The oxidation behaviors showed linear oxidation. Assuming repetition which constituted of parabolic oxide film growth until a certain thickness and its crack formation, the linear rate constants were described as a function of the oxygen partial pressure. It was considered that the steep decrease in EMF is caused by the change of the rate-determining process to form the scale.« less
  • A new solid-electrolyte oxygen sensor has been developed that eliminates the conventional oxygen reference in previous solid-electrolyte oxygen sensor designs and is, therefore, ideally suited as an insertion device for remote oxygen monitoring applications. It is constructed with two cells of stabilized zirconia sealed into a small unit using a new high-temperature platinum-zirconia seal. One electrochemical cell monitors the ratio of oxygen partial pressures inside and outside the sensor while the other solid-electrolyte cell is used for quantitative electrochemical pumping of oxygen. The internal oxygen reference is generated by initially pumping all oxygen out of the known internal volume ofmore » the sensor and then quantitatively pumping oxygen back in until oxygen partial pressures are equal inside and out. This information is used with the ideal gas law to calculate oxygen partial pressures. Tests were conducted from 400 to 1000/sup 0/C in mixtures of oxygen and nitrogen spanning approximately 0.2 to 21 percent oxygen concentration range. Sensors with sputtered platinum and porous platinum paste electrodes were compared.« less