Mixed potential gadolinia-doped ceria (GDC)-based gas sensors using a double perovskite composite oxide (Sr₂NiMoO₆) were fabricated to detect ethanol. The influence of the sensing materials sintered at different temperatures on the sensor properties was investigated. The results showed that Sr₂NiMoO₆ annealed at 1000 °C was the most suitable sensing material for detecting ethanol due to its suitable micromorphology and high electrochemical catalytic activity. The sensor attached with Sr₂NiMoO₆-1000 °C displayed the highest sensitivity to 1–200 ppm ethanol at 550 °C, the response value ΔV was piecewise linearly with the logarithm of ethanol concentration, and the slopes were −8 and −51.3 mV/decade in the ranges of 1–10 ppm and 10–200 ppm ethanol, respectively. Moreover, the stability and sensing mechanism of the sensor were also investigated.

使用双钙钛矿复合氧化物（Sr ₂ NiMoO ₆）制造基于混合电位钆掺杂的氧化铈（GDC）的气体传感器来检测乙醇。研究了在不同温度下烧结的传感材料对传感器性能的影响。结果表明，1000℃退火的Sr ₂ NiMoO ₆具有合适的微观形貌和较高的电化学催化活性，是最适合检测乙醇的传感材料。附有 Sr ₂ NiMoO ₆的传感器-1000 °C 在 550 °C 时对 1–200 ppm 乙醇的灵敏度最高，响应值 ΔV 与乙醇浓度的对数呈分段线性关系，斜率在 1 范围内分别为 -8 和 -51.3 mV/decade分别为 –10 ppm 和 10–200 ppm 乙醇。此外，还研究了传感器的稳定性和传感机制。