High-Temperature Sensors for Monitoring and Control of Solid Oxide Fuel Cells

Improved efficiencies and lower emissions can be unlocked in current and future generations of fossil fuel based power plants by employing novel embedded sensor technology. These sensors must be able to operate at high temperatures and harsh conditions, and innovations in sensor packaging and design are required to address the embedded sensing needs for these challenging environments.

Advanced functional sensing materials can potentially enable novel devices with improved stability under extreme conditions. This sensor technology focuses primarily on the use of optical fiber based sensors for fuel-utilization monitoring and control in solid oxide fuel cell applications and includes sensor packaging, sensor interrogation, SOFC control methodologies, and application of optical fiber sensors. 

The ability to perform real-time embedded sensing in an SOFC is important for operational monitoring and control purposes. By monitoring absolute value and spatial gradient of the gas stream composition and temperature, degradation drivers can be identified and potentially mitigated.  In addition, real-time operational measurements would enable the use of active controls for optimizing fuel utilization and minimizing long-term degradation.