pp. 1351-1356
S&M1861 Research Paper https://doi.org/10.18494/SAM.2019.2291 Published: April 30, 2019 Sensor Properties of Series-connected Mixed-potential H2 Gas Sensor [PDF] Takafumi Akamatsu, Toshio Itoh, and Yoshitake Masuda (Received January 11, 2019; Accepted April 3, 2019) Keywords: mixed-potential gas sensor, hydrogen, phosphate glass, benzimidazole, sensor array
Mixed-potential gas sensors with an anhydrous electrolyte consisting of zinc metaphosphate glass and benzimidazole were fabricated for the detection of hydrogen. Using a combination of similar sensor units connected in series, a strategy for measuring sub-ppm-level hydrogen has been demonstrated. The sensor unit consisted of an electrolyte membrane and an alumina substrate with platinum and gold electrodes. A sensor array with 7 sensors connected in series showed a response to the H2 gas, even at 1 ppm. The sensitivities of the single sensor and 7-sensor array were −0.57 and −3.54 mV/ppm, respectively. By connecting sensors in series, the sensor response and sensitivity were improved.
Corresponding author: Takafumi AkamatsuThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Takafumi Akamatsu, Toshio Itoh, and Yoshitake Masuda, Sensor Properties of Series-connected Mixed-potential H2 Gas Sensor, Sens. Mater., Vol. 31, No. 4, 2019, p. 1351-1356. |