Hydrogen pump-type impurity sensors for hydrogen fuels. (2nd February 2017)

• Record Type: Journal Article
• Authors: Noda, Z.; Hirata, K.; Hayashi, A.; Takahashi, T.; Nakazato, N.; Saigusa, K.; Seo, A.; Suzuki, K.; Ariura, S.; Shinkai, H.; Sasaki, K.
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 5(2017)
• Page Start: 3281
• Page End: 3293
• Publication Date: 2017-02-02
• Subjects: Sensor -- Hydrogen pump -- Impurity -- CO -- H2S -- NH3; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2016.12.066
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A hydrogen pump-type hydrogen sensor cell has been developed for continuously detecting a trace amount of impurities contained in hydrogen fuels, by using the impurity poisoning effect of PEFC-type electrochemical cells. The impurity-sensitive sensor cell was produced by extremely reducing Pt catalyst loading in order to detect even a small amount of impurities. This type of sensors with the stable baseline can detect major hydrogen fuel impurities, CO, H2 S, and NH3, with the ppm-level detection limit. Highlights: Hydrogen pump-type sensor was developed as a revised model of PEFC-type. Hydrogen pump-type sensor cell was able to detect ppm-impurity in H2 fuel. The baseline voltage noise derived by water production was effectively removed. The detectable minimum impurity concentration was improved. Mechanism of sensing different impurities was proposed.