二氧化碳电化学传感器敏感电极的烧制  

Preparation of the Sensing Electrode of a CO2 Electrochemical Sensor

作　　者：王光伟 陈鸿珍[2] 李友凤[1] 谢波 潘琪 WANG Guangwei;CHENHongzhen;LI Youfeng;XIE Bo;PAN Qi(Zunyi Normal University,Zunyi 563006,Guizhou,China;Chongqing Institute of Green and Intelligent Technology(CIGIT),Chongqing 400714,China)

机构地区：[1]遵义师范学院,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：《陶瓷学报》2019年第5期624-630,共7页Journal of Ceramics

基　　金：国家自然科学基金(41763008,41203047);贵州省基础研究计划项目(重点)(黔科合基础[2019]1461号);贵州省科技支撑计划项目(黔科合支撑[2018]2774);贵州省联合基金项目(黔科合LH字[2016]7011号);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：利用碳酸锂-锂钡掺杂氧化碳酸盐作为复合敏感电极,构建YSZ二氧化碳电化学传感器,并借助于XRD、扫描电镜、二氧化碳响应性能测试等方法,对敏感电极的烧制条件进行了研究。结果表明,敏感电极的烧制条件对传感器响应性能具有影响。烧制温度为710℃,烧制时间为3 h所制敏感电极中锂钡掺杂氧化碳酸盐颗粒和碳酸锂颗粒分布均匀,接触紧密,传感器电子转移数接近理论电子转移2,响应性能较好,并表现出较好的热稳定性。继续延长烧制时间,传感器响应性能无明显变化。对于烧制时间较短的传感器,则可通过适当的热处理提升其响应性能。YSZ based CO2 sensors having Li2CO3-Li and Ba co-doped oxycarbonates as their sensing electrodes were designed and studied by XRD,SEM,and CO2 response detection.The results indicated that the sintering techniques of the sensing electrodes affect sensor performance.Probably due to the good distribution of Li and Ba co-doped oxycarbonates in the Li2CO3 particles,the sensor sintered at 710℃ for 3 h had approximately 2 transferred electrons,responded well to the alteration of CO2 concentration and exhibited good thermal stability.As the sintering time further increased,the response characteristics of the sensors did not change obviously.However,the sensor sintered for short time could be improved by some extent of heat treatment.

关 键 词：氧化碳酸盐 复合敏感电极 烧制 CO2传感器 响应 

分 类 号：TQ174.75[化学工程—陶瓷工业]