實時動態(tài)檢測呼出氣體的固態(tài)電化學(xué)傳感器

基于實時動態(tài)檢測O2 和CO2 的暫態(tài)電化學(xué)原理和新型高分子固體聚合物電解質(zhì)—─“聚丙烯腈(PAN) / 聚乙烯吡咯烷酮(PVP) - 二甲亞砜(DMSO) - 高氯酸四乙基銨(TEAP) ”的研究,使用微電極并融合計算機控制的快速電勢調(diào)制技術(shù)和數(shù)據(jù)采集、處理功能,提出并構(gòu)建了一類全新的集信號提取、處理與顯示等功能于一體的固態(tài)電化學(xué)傳感器,實現(xiàn)了常溫下呼出氣體O2 和CO2 的實時動態(tài)檢測, 不僅消除了常規(guī)電化學(xué)傳感器中電解液滲漏或干涸對器件性能的影響,而且具有體積小、結(jié)構(gòu)緊湊、使用方便等優(yōu)點。
關(guān)鍵詞:固態(tài)電化學(xué)氣體傳感器; 實時動態(tài)檢測; 氧和二氧化碳; 聚丙烯腈/ 聚乙烯吡咯烷酮- 二甲亞砜- 高氯酸四乙基銨固體聚合物電解質(zhì)
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