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Miniaturized amperometric solid electrolyte carbon dioxide sensors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Xu, J. C. Hammond, J. W. Lampard, P. Androjna, D. Lukco, D. Hunter, G. W. Ward, B. Liu, C. C. Artale, M. |
| Copyright Year | 2006 |
| Description | A miniaturized electrochemical carbon dioxide (CO2) sensor using Na3Z r2Si2PO12 (NASICON) as a solid electrolyte has been fabricated and de monstrated. Microfabrication techniques were used for sensor fabricat ion to yield a sensing area around 1.0 mm x 1.1 mm. The NASICON solid electrolyte and the Na2CO3/BaCO3 (1:1.7 molar ratio) auxiliary elect rolyte were deposited by sputtering in between and on top of the inte rdigitated finger-shaped platinum electrodes. This structure maximize s the length of the three-phase boundary (electrode, solid electrolyt e, and auxiliary electrolyte), which is critical for gas sensing. The robust CO2 sensor operated up to 600 C in an amperometric mode and a ttempts were made to optimize sensor operating parameters. Concentrat ions of CO2 between 0.02% and 4% were detected and the overall sensor performance was evaluated. Linear response of sensor current output to ln[CO2 concentration] ranging from 0.02% to 1% was achieved. |
| File Size | 325859 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090014003 |
| Archival Resource Key | ark:/13960/t3qv8h19s |
| Language | English |
| Publisher Date | 2006-10-29 |
| Access Restriction | Open |
| Subject Keyword | Fabrication Carbon Dioxide Electrochemistry Solid Electrolytes Miniaturization Gas Analysis Gas Detectors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
