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Au-Pd@Meso-Co3O4: A Promising Material for New Generation Pellistor with Low Working Temperature

: Lyu, Xuemeng; Gao, Haitao; Diehle, Patrick; Altmann, Frank; Tarantik, Karina; Schmitt, Katrin; Wöllenstein, Jürgen


Institute of Electrical and Electronics Engineers -IEEE-:
20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII, TRANSDUCERS & EUROSENSORS 2019 : 23-27 June 2019, Berlin, Germany
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-5386-8104-6
ISBN: 978-1-5386-8105-3
ISBN: 978-1-7281-2007-2
International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers) <20, 2019, Berlin>
European Conference on Solid-State Transducers (Eurosensors) <33, 2019, Berlin>
Conference Paper
Fraunhofer IPM ()
Fraunhofer IMWS ()
methane; temperature sensor; mesoporous materials; Pellistor; Au-Pd@meso-CO3O4

The working temperature of pellistors using 3-dimensional mesoporous Co3O4 (meso-Co3O4 ) supported Au-Pd, Au-Pd@meso-Co3O4 , is significantly reduced to 300 °C, thereby avoiding possible catalytic poisoning at high temperatures inherent in conventional pellistors. Our results indicate that meso-Co3O4 has a great advantage over the commercially available Co3O4 with respect to sensing performance. The coverage of Au-Pd on Co3O4 influences the sensor behavior. Besides, the number of deposited layers has an impact on the pellistor performance. 15-layer-deposition of Au-Pd@meso-Co3O4 delivers the best result. This development towards a decreased working temperature can be anticipated as the new concept to design robust pellistors with low power consumption.