Characteristics of Solid-State Amperometric Oxygen Sensor Using Pt/C Film Hot-Pressed onto Nafion Membrane

Electrochemical Hydrogen Sensor Assembly for Monitoring High‐Concentration Hydrogen

“…Nafion is one of the most widely used polymer electrolytes because of its excellent physical properties; perfluorinated bond and sulfonic acid groups in Nafion contribute to its high ionic conductivity and chemical stability. [ 22,23 ]…”

“…Nafion is one of the most widely used polymer electrolytes because of its excellent physical properties; perfluorinated bond and sulfonic acid groups in Nafion contribute to its high ionic conductivity and chemical stability. [22,23] Although most Nafion-based hydrogen sensors have been aimed at leak detection, a cost-effective high-concentration hydrogen sensor with a Nafion membrane has been recently reported. [24] An upper detection limit of most hydrogen sensors is less than 4% (40 000 ppm, lower explosive limit), [3,5,6] whereas the prototype sensor device performed well over a concentration range of 20% and higher.…”