实时动态检测呼出气体的固态电化学传感器

基于实时动态检测O2 和CO2 的暂态电化学原理和新型高分子固体聚合物电解质—─“聚丙烯腈(PAN) / 聚乙烯吡咯烷酮(PVP) - 二甲亚砜(DMSO) - 高氯酸四乙基铵(TEAP) ”的研究,使用微电极并融合计算机控制的快速电势调制技术和数据采集、处理功能,提出并构建了一类全新的集信号提取、处理与显示等功能于一体的固态电化学传感器,实现了常温下呼出气体O2 和CO2 的实时动态检测, 不仅消除了常规电化学传感器中电解液渗漏或干涸对器件性能的影响,而且具有体积小、结构紧凑、使用方便等优点。
关键词:固态电化学气体传感器; 实时动态检测; 氧和二氧化碳; 聚丙烯腈/ 聚乙烯吡咯烷酮- 二甲亚砜- 高氯酸四乙基铵固体聚合物电解质
Abstract : Based on the transient electrochemical principle for real2time and dynamic detection of both O2 and CO2 and the development study on a new type of solid polymer electrolyte2“polyacrylonitrile (PAN) / polyvinylpyrrolidone (PVP)2 dimethylsulfoxide (DMSO)2tetraethylammonium perchlorate (TEAP) ”,a kind of all2new solid2state electrochemical gas
sensors integrated with acquisition ,treatment and display of signals was established by combining computer2 controlled fast2modulated potential technique with microelectrode method. This study has shown that the solid2state electrochemical sensor device can be used for real2time and dynamic detection of exhalant gases O2 and CO2 at room temperature ,also ,it
avoids liquid leakage or drying2up problems of flowing electrolytes and possess its own original advantages.
Key words : solid2state electrochemical gas sensor ; real2time and dynamic detection ; O2 and CO2 ; PAN/ PVP2DMSO2
TEAP solid polymer electrolyte