Electrochemical Hydrogen Sensor for Safety Monitoring
A hydrogen safety sensor is presented which provides high sensitivity and fast response time when operated in air. The target application for the sensor is external deployment near systems using or producing high concentrations of hydrogen. The sensor is composed of a catalytically active metal-oxide sensing electrode and a noble metal reference electrode attached to an yttria-stabilized zirconia (YSZ) electrolyte. The sensing approach is based on the difference in oxidation rate of hydrogen on the different electrode materials. Results will be presented for a sensor using a sensing electrode of tin-doped indium oxide (ITO). Response to H{sub 2}, and cross-sensitivity to hydrocarbon and H{sub 2}O are discussed.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15004873
- Report Number(s):
- UCRL-JC-151802; TRN: US200321%%376
- Resource Relation:
- Journal Volume: 175; Journal Issue: 1-4; Conference: 14th International Conference on Solid State Ionics, Monterey, CA (US), 06/22/2003--06/27/2003; Other Information: PBD: 25 Apr 2003
- Country of Publication:
- United States
- Language:
- English
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