La_(0.7)Sr_(0.3)Co_(0.3)Fe_(0.7)O_3纳米纤维的合成及其NO气敏特性研究  

A Study on the Synthesis and NO Sensing Property of La_(0.7)Sr_(0.3)Co_(0.3)Fe_(0.7)O_3 Nanofiber

作　　者：周见红[1] 王金兴[2] 王丹[2] 徐德超[2] 张克金[2] 安宇鹏[2] 魏晓川[2] 张喆[2] 

机构地区：[1]长春理工大学光电工程学院,长春130011 [2]中国第一汽车集团公司技术中心,长春130011

出　　处：《汽车工程》2011年第10期907-910,共4页Automotive Engineering

摘　　要：用简单有效的静电纺丝法合成了La0.7Sr0.3Co0.3Fe0.7O3纳米纤维材料,并采用X-射线衍射和扫描电子显微镜对其晶体结构和形貌进行表征。结果显示,合成纤维的直径在150～300nm之间,长度达到几十个微米。以钇稳氧化锆为固体电解质,合成的La0.7Sr0.3Co0.3Fe0.7O3纳米纤维材料为感测电极,制备电位型NO传感器,测量其在不同NO浓度下产生的电动势。结果表明,该传感器产生的电动势与NO浓度呈明显的线性正比关系,而传感器的响应快速。La0.7Sr0.3Co0.3Fe0.7O3 nanofiber is synthesized by a simple and effective electrospinning method,and its crystal structure and morphology are characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM）.The results reveal that the diameter of synthesized nanofiber is between 150 to 300 nm and its length can reach several tens of micrometers.Potentiometric-type NO sensor is made with yttria-stabilized zirconia（YSZ） as solid electrolyte and La0.7Sr0.3Fe0.3Co0.7O3 nanofiber as sensing electrode,and its electromotive force（EMF） generated at different NO concentrations is measured.The results show that the EMF the sensor generated exhibits a linear direct proportion relation with NO concentration and the sensor has fast response.

关 键 词：La0.7Sr0.3Co0.3Fe0.7O3纳米纤维 气体传感器 NO 钇稳氧化锆 

分 类 号：TB383.1[一般工业技术—材料科学与工程]