Methanol, as the raw material of new fuel cells, is flammable, explosive and dangerous. The leakage monitoring of methanol in high-temperature methanol fuel cells is necessary and challenging. Herein, a wide detection range of Yttria Stabilized Zirconia (YSZ)-based mixed potential methanol gas sensor equipped with NiSb₂O₆sensing electrode (SE) was developed. The sensor possesses wide detection range of 0.1-500 ppm and presents sensitivity of - 84.13 mV/decade to 5-500 ppm methanol at 570℃. The sensor also has good moisture resistance, reliable repeatability, long-term stability and obvious selectivity for methanol. We also show the adsorption characteristics as well as the possible chemical reaction of methanol with NiSb₂O₆material during transmission process. This work offers a new gas-sensing detection strategy for methanol leakage in high-temperature fuel cells and leads to more consideration on the selection of SE materials.

原文链接：https://www.sciencedirect.com/science/article/pii/S0925400523008031?via%3Dihub