基于 NASICON 和 Co3O4敏感电极的丙酮传感器的研究  

Research of acetone sensor based on the NASICON and Co_3O_4 sensitive electrode

作　　者：金贵新 王艳丽[2,3,4] 安申爽 张小水 梁喜双[1,2,3,4] 

机构地区：[1]河南汉威电子股份有限公司,河南郑州450001 [2]吉林大学集成光电子国家重点实验室 [3]吉林大学实验区,吉林长春130012 [4]吉林大学电子科学与工程学院,吉林长春130012

出　　处：《电子元件与材料》2014年第4期56-59,共4页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.61104203);中国博士后科学基金资助项目(No.2013M531672)

摘　　要：以溶胶-凝胶法制备的NASICON为基体导电层材料，以水热法制备的纳米片状C0304为敏感电极材料，制备了一种检测低浓度丙酮的管式结构固体电解质型气体传感器，利用静态配气法对传感器的气敏性能进行了测试，结果表明：当工作温度为300～375℃时，传感器对体积分数为O．5×10-6～100×10-6的丙酮表现出了较好的气敏性能，其检测下限能达到0．5×10-6（体积分数），传感器电动势变化值（△V）与丙酮浓度的对数呈线性关系，在温度为350℃时，传感器对丙酮的灵敏度达到最大值-24．5mV／decade，另外，该传感器还具有较快的响应恢复速度和较好的选择性。A kind of solid electrolyte gas sensor with tubular structure which can detect the low concentration acetone was proposed. The NASICON prepared by sol-gel method was used as the conductive layer and the nano-flake Co304 prepared by hydrothermal synthesis method was used as the sensitive electrode material. Gas sensing properties of the prepared sensors were measured by the conventional static mounting method. The results show that, the sensor possesses a excellent response to acetone with volume fraction of 0.5x 10-6-100x10-6 at 300-375 ~C, and the lower limit of detection can reach 0.5x 10-6 （volume fraction）. There is a linear relationship between the change of electromotive force value （AV） of sensor and the logarithm of acetone concentration. The maximum sensitivity of the sensor to acetone is -24.5 mV/decade at 350 ℃. Moreover, the sensor shows rapider response-recovery and better selectivity.

关 键 词：丙酮传感器 固体电解质 NASICON CO3O4 静态配气法 混成电位 

分 类 号：TM24[一般工业技术—材料科学与工程]