Research on the sensing performance of YSZ-based FeWO 4 hydrogen sensor

FeWO 4 nano-materials was synthesized by hydrothermal method. XRD and SEM were used to characterize and analyze the FeWO 4 nano-materials, and a kind of YSZ-based mixed potential type FeWO 4 /YSZ/Pt hydrogen sensor was developed. The FeWO 4 /YSZ/Pt sensor indicated a good sensitivity performance to hydrogen in a concentration range of 80–960 ppm and excellent selectivity to some possible interferences such as CO, C 3 H 8 and NO 2 at 500°C in a background of 10 vol% oxygen balanced with nitrogen. The sensor also have favorable repeatability and sensor to sensor consistency. Compared with existing MnWO 4 /YSZ/Pt and CdWO 4 /YSZ/Pt hydrogen sensor, the sensing performance of FeWO 4 /YSZ/Pt hydrogen sensor was better.