Electrochemical zirconia-based sensor for measuring hydrogen diffusion in inert gases

Abstract

Solid-state electrochemical sensors represent a convenient way for performing various electroanalytical tasks. Here, we present a comprehensive analysis of binary gases composed of hydrogen mixed with an inert gas (He, Ar, N2). Using the fabricated aerometric-type YSZ-based electrolyte, diffusion coefficients for these binary gases were successfully determined in an electrochemical way in a temperature range of 550–750°C. The obtained results agree well with literature data, showing that the He+H2 gas mixture with highly volatile components exhibit the highest diffusion coefficients, which are around 2 times higher than that for Ar+H2 and N2+H2.

Construction of trace hydrogen detection system based on distributed feedback fiber laser

“…Thus, the development of safe, reliable, and highly sensitive hydrogen sensors holds paramount importance, particularly for trace hydrogen detection in fields such as mining, food processing, and metallurgy 1 , 2 . Multiple hydrogen sensing technologies have been reported, such as electrochemical sensors, 3 – 5 semiconductor sensors, 6 – 8 and thermoelectric sensors 9 – 11 These sensors have high precision and stability while risk of ignition due to potential sparks.…”