Fraunhofer Institute for Ceramic Technologies and Systems IKTSElectrochemical CO2/O2 sensor
Topic gas sensors
Applications for CO2 detection are numerous: the control of growth processes in biotechnology, air quality and pollution monitoring and medical respiratory systems to name just a few. Compared to state-of-the-art infrared based optical CO2 sensors, solid electrolyte electrochemical sensors allow low cost manufacturing of large sensor quantities along with a compatibility with a wide range of operating environments.
Development results
The sensor developed at IKTS has been designed for respiratory analysis applications and is based on a sodium-ion conducting solid electrolyte. A patented auxiliary electrode is implemented to compensate for possible O2 cross sensitivity and to detect sudden changes in O2 concentration. The sensor is manufactured in ceramic thick film technology with a size of 3.5 x 4.0 x 0.5 mm³. Sensor response in the range of 0.04-10 vol% CO2 in air shows Nernstian behaviour.
Services offered
- Application-specific customization of sensor geometry, measuring range and operating parameters
- Sensor packaging and integration via ceramic joining technology
- Supply of sensor prototypes for evaluation purposes
- Development and transfer of technologies for industrialization of sensor manufacturing
