6.5.1 Sensitive and Selective Detection of Hydrogen Using YSZ-based Sensor with Zn-Ta-based Oxide Sensing-electrode
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- 6.5 YSZ Based Sensors
- Author(s)
- S. Anggraini - Interdisciplinary Graduate School of Engineering Sciences, Kyushu University (Japan), M. Breedon - Japan Society for the Promotion of Science (Japan), N. Miura - Art, Science and Technology Center for Cooperative Research (KASTEC), Kyushu University (Japan)
- Pages
- 563 - 565
- DOI
- 10.5162/IMCS2012/6.5.1
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
An yttria-stabilized zirconia (YSZ)-based sensor utilizing a Zn-Ta-based oxide sensing electrode (SE) is reported herein as being capable of generating sensitive and selective response toward hydrogen (H2). The addition of 84 wt.% Ta2O5 into ZnO brought about the highest response toward H2, when compared with other examined Zn-Tabased oxide SE materials. After a stabilization period of about 50 days, the sensor exhibited a stable and high sensitivity (Δemf) of approximately -600 mV toward 100 ppm H2 and low cross-sensitivity towards other examined gases (< ± 80 mV) at 500oC under humid operating conditions (20 vol.% O2 and 5 vol.% H2O). An almost linear relationship between sensitivity and H2 concentration (10-100 ppm) was observed for the developed sensor.