수소가 충전된 고분자에서 수소 장입량과 확산도 측정을 위한 부피 및 압력 분석법 기반의 수소 가스 센서 = H₂ Gas Sensors Based on Volumetric and Manometric Analysis for Measuring H₂ Uptake and Diffusivity in H₂ Charged Polymers

다국어 초록 (Multilingual Abstract)

To realize the hydrogen economy, hydrogen infrastructure is being expanded, necessitating precise sensing technology for the safe management of hydrogen, which has a wide explosive range. This study proposes two types of hydrogen gas sensors based on volumetric and pressure analysis. The sensors are designed to accurately measure the hydrogen uptake and diffusivity of polymers charged under high-pressure conditions. Performance evaluation showed a stability of 0.2% and a resolution of 0.12 wt·ppm, with a response time of less than one second, allowing precise detection of hydrogen concentrations ranging from 0.1 wt·ppm to 1400 wt·ppm. The sensors also feature adjustable sensitivity, resolution, and measurement range. Measurement results from both sensors were consistent within the uncertainty range. The proposed system enables real-time monitoring and characterization of hydrogen gas, contributing to safe infrastructure operation and the advancement of the hydrogen economy.