Carbon monoxide-resistant hydrogen detection: Pt–melamine–formaldehyde with portable bluetooth in fuel cell

Abstract

Hydrogen sensors are critical in fuel cell applications, where carbon monoxide (CO) poisoning presents a substantial limitation to sensor longevity. The broad flammability range of hydrogen (from percentages to ppm) underscores the need for precise and efficient detection methods. Traditional approaches employ catalysts, but suffer from limitations such as poor control over catalyst characteristics, limited robustness, and slow response times, under CO poisoning. This study introduces an innovative approach for hydrogen detection in extreme environments by controlling the hydroxyl (OH-) functional groups and significantly decreasing the Pt particle size from 10 nm to 2 nm, which enhances catalytic activity and stability. This enhancement enables wide-range detection and rapid response even under CO poisoning. Our results demonstrate the development of a superior Bluetooth-enabled hydrogen-cap sensor that operates reliably at room temperature in various harsh industrial environments, highlighting its potential applicability and robustness in real-world scenarios. © 2024 Elsevier B.V.