全固态一氧化碳电化学传感器响应研究

采用化学还原方法制备了Pd-Nafion复合膜电极作为催化传感电极,研制了室温全固态电解质型一氧化碳传感器,考察了复合膜电极对一氧化碳/氮气体系产生电流响应的适宜电位,响应时间常数以及响应电流与一氧化碳体积分数的关系,并探讨了检测环境温度对传感器响应输出电流的影响.

Response of an electrochemical carbon monoxide sensor based on a solid polymer electrolyte

A novel carbon monoxide sensor, based on a solid polymer electrolyte, which could be workable at room temperature was prepared. The sensing electrode was a Pd/Nafion membrane electrode prepared by a chemical deposition method. The suitable electricity between the two electrodes for the electrolysis of carbon monoxide in N 2 and the time constant were examined by a potentiostat. The relations between the sensor response current and the volume fraction of carbon monoxide in N 2 were discussed and the effect of the environmental temperature on the response current was also presented.