Oxygen partial pressure sensor
- Downers Grove, IL
A method for detecting oxygen partial pressure and an oxygen partial pressure sensor are provided. The method for measuring oxygen partial pressure includes contacting oxygen to a solid oxide electrolyte and measuring the subsequent change in electrical conductivity of the solid oxide electrolyte. A solid oxide electrolyte is utilized that contacts both a porous electrode and a nonporous electrode. The electrical conductivity of the solid oxide electrolyte is affected when oxygen from an exhaust stream permeates through the porous electrode to establish an equilibrium of oxygen anions in the electrolyte, thereby displacing electrons throughout the electrolyte to form an electron gradient. By adapting the two electrodes to sense a voltage potential between them, the change in electrolyte conductivity due to oxygen presence can be measured.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5344549
- OSTI ID:
- 869477
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
partial
pressure
sensor
method
detecting
provided
measuring
contacting
solid
oxide
electrolyte
subsequent
change
electrical
conductivity
utilized
contacts
porous
electrode
nonporous
affected
exhaust
stream
permeates
establish
equilibrium
anions
displacing
electrons
throughout
form
electron
gradient
adapting
electrodes
sense
voltage
potential
due
presence
measured
voltage potential
exhaust stream
oxygen partial
solid oxide
electrical conductivity
partial pressure
oxide electrolyte
pressure sensor
porous electrode
oxygen anion
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