논문 해외 국제전문학술지(SCI급) High-concentration Nafion-based hydrogen sensor for fuel-cell electric vehicles
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-01
- 저자명 정순원,이은규,김정현,이승윤
- 학술지명 SOLID STATE IONICS
- 발행처명 ELSEVIER
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지논문 초록 (Abstract)
This paper reports the fabrication and characterization of a high-concentration potentiometric hydrogen sensor for fuel-cell vehicle applications. Hydrogen sensors have been mainly developed for detecting hydrogen at concentrations less than the lower explosion limit of 4% in air. However, a wide detection range is required to monitor and control hydrogen concentrations in hydrogen fuel-cell vehicles. We demonstrated a cost-effective and wide detection-range Nafion-based potentiometric hydrogen sensor. The conventional hot-pressing method was used to fabricate a small-sized and multilayer structure comprising a Nafion membrane and Pt-C electrodes. The dependence of the sensor performance on the hydrogen concentration, relative humidity, pressure, and temperature was examined. The fabricated sensor exhibited a response to hydrogen gas in a concentration range of 20-99.99% and a high performance reliability against environmental variations. The simple structure and reliable operation of the sensor make it promising for practical applications.