Ag{sup +}-{beta}{double_prime}-alumina solid electrolyte SO{sub x} sensor with metal silver as a solid reference electrode

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Russian Journal of Electrochemistry

OSTI ID:249797

Rao, N ^[1]; Bleek, C.M. van den; Schoonman, J ^[2]

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1. Innovision A/S, Odense (Denmark)
2. Riso National Lab., Roskilde (Denmark); and others

Polycrystalline Ag{sup +}-{beta}{double_prime}-Alumina tubes were prepared from Na{sup +}-{beta}{double_prime}-Alumina by ion exchange and characterized by XRD, DTA, TGA, SEM and EDX analyses. Applying tubuler Ag{sup +}-{beta}{double_prime}-Alumina as solid electrolyte, metallic Ag as a solid reference electrode and porous Pt as a working electrode, fully solid galvanic cells were constructed as electrochemical SO{sub x} sensors Pt, Ag{vert_bar}Ag{sup +}-{beta}{double_prime}-Alumina{vert_bar}porous Pt, SO{sub 2}-SO{sub 3}-O{sub 2}, Pt. The sensors were tested in a small commercial-type testing system. The Nernst emf response of the sensor to the SO{sub 2} partial pressure is fairly consistent with the theoretical prediction in the working temperature range of 500-700{degrees}C and the SO{sub 2} concentration range of 10 to 1000 ppm. The response time is usually about 5-10 min. The experimental results indicate the potential of this SO{sub 2} sensor in practical use.

• OSTI ID: 249797
• Journal Information: Russian Journal of Electrochemistry, Journal Name: Russian Journal of Electrochemistry Journal Issue: 12 Vol. 29; ISSN RJELE3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ALUMINIUM OXIDES
ELECTRODES
GASEOUS WASTES
ION EXCHANGE
MEASURING INSTRUMENTS
MEASURING METHODS
MICROSTRUCTURE
PERFORMANCE
PHYSICAL PROPERTIES
PLATINUM
SILVER
SOLID ELECTROLYTES
SULFUR OXIDES
TEMPERATURE DEPENDENCE