基于锂钡掺杂氧化碳酸盐的电势型CO2传感器  

CO2 Potentiometric Sensor Based on Li and Ba Co-doped Oxycarbonate

作　　者：王光伟 陈鸿珍[2] 李友凤[1] 谢波 吕国岭 WANG Guang-wei;CHEN Hong-zhen;LI You-feng;XIE Bo;LYU Guo-ling(Department of Chemistry and Chemical Engineering,Zunyi Normal University,Zunyi 563006,China;Chongqing Institute of Green and Intelligent Technology(CIGIT),Chinese Academy of Sciences,Chongqing 400714,China)

机构地区：[1]遵义师范学院化学化工学院,贵州遵义563006 [2]中国科学院重庆绿色智能技术研究院,重庆400714

出　　处：《仪表技术与传感器》2019年第12期12-16,22,共6页Instrument Technique and Sensor

基　　金：国家自然科学基金资助项目(41763008,41203047);贵州省科技支撑计划项目(黔科合支撑[2018]2774);贵州省普通高等学校科技拔尖人才支持计划项目(黔教合KY字[2017]086);遵义师范学院博士启动基金项目(遵师BS[2017]02);重庆市前沿与应用基础研究项目(cstc2015jcyjA20008)

摘　　要：利用锂钡掺杂氧化碳酸盐作为敏感电极材料,YSZ作为固体电解质,构建CO2电化学传感器,并借助于扫描电镜、XRD等方法,对该传感器的性能进行了研究。结果表明,基于锂钡掺杂氧化碳酸盐的YSZCO2传感器具有快速和准确的电动势响应,传感器电子转移数近似为2;经过多次CO2浓度往返突变后传感器电动势均能够恢复到基准状态,并具有较好的长时间稳定性,传感器对于CO2浓度的响应速率随温度的升高而加快。The CO2 electrochemical sensor having Li and Ba oxycarbonateas as its sensitive electrode and YSZ as its electrolyte was constructed.The sensor performance was studied by the means of SEM and XRD.The results indicate that the potentiometric respond of YSZ CO2 sensor is correct and rapid based on Li and Ba oxycarbonate,and the electron transfer number of the sensor is approximately 2.The electromotive force of the sensor is able to return to the reference state after several round trips of CO2 concentration.The sensor’s response rate to CO2 concentration increases with temperature.

关 键 词：氧化碳酸盐 敏感电极 YSZ CO2传感器 响应 

分 类 号：TQ174.7[化学工程—陶瓷工业]