一种水清洁阳极的基于甲醇渗透的浓度传感器

A concentration sensor based on methanol permeation with anode rinsed by water

提出一种基于膜电极(MEA)结构的驱动模式甲醇浓度传感器。甲醇溶液从MEA阴极流过,通过MEA渗透到阳极,Nafion膜既是电解质膜又是甲醇渗透膜。由于引入水清洁阳极,有效避免了甲醇的累积,提高了该传感器稳定性和重现性。该传感器测量范围最大可以达到5 mol/L,适合于直接甲醇燃烧电池(DMFC)系统中甲醇的监测。

A drive mode methanol concentration sensor based on membrane electrode assembly （MEA） is provided. The methanol solution permeated to anode through Nation MEA when methanol solution is fed through cathode. Nation is a electrolytic membrane as well as a methanol permeated membrant. Water used as cleaning reagent is fed through the anode chamber to avoid methanol accumulation; stability and reproducibility of the sensor is improved. The measuring range of the sensor is up to 5 mol/L. This sensor has potential application in DMFCs.