硅酸盐学报2017，Vol.45Issue(12)：1776-1781,6.DOI:10.14062/j.issn.0454-5648.2017.12.08
基于LaNi0.6Fe0.4O3-δ致密扩散障型极限电流氧传感器的制备及性能
Preparation and Properties of Amperometric Oxygen Sensor Based on Dense Diffusion Barrier with LaNi0.6Fe0.4O3-δ
摘要
Abstract
The powders of LaNi0.6Fe0.4O3-δ (LNF) and Ce0.9Gd0.1O1.95 (GDC) were preparedvia a sol-gel method. LNF powder was characterized by X-ray diffraction (XRD). The morphology of the piece sections of LNF and GDC ceramics was determined by scanning electron microscopy. A limiting current oxygen sensor using GDC as a solid electrolyte layer and LNF mixed ion-electron conductor as a dense diffusion barrier was developedvia a Pt liquid agglutination method. The influences of temperature and oxygen content on the oxygen sensitive characteristic for oxygen sensor were investigated. Based on the XRD result, LNF powder has a single perovskite structure. LNF and GDC ceramic both have a greater sintered density and a lower porosity. The sensor has a good stable current plateaus at 740-820℃ as the oxygen concentration increases from 0.3% to 1.1%. Besides, the response/recovery time of oxygen sensor are 18 and 23s, respectively, showing the good response characteristics. Also, the limiting current is linearly related to the oxygen concentration and the temperature (T-0.5).关键词
氧传感器/极限电流/掺铁镍酸镧/致密扩散障Key words
oxygen sensor/limiting current/iron doped lanthanum nickelate/dense diffusion barrier分类
信息技术与安全科学引用本文复制引用
梁斌,周芬,郜建全,包金小,宋希文..基于LaNi0.6Fe0.4O3-δ致密扩散障型极限电流氧传感器的制备及性能[J].硅酸盐学报,2017,45(12):1776-1781,6.基金项目
内蒙古自治区高等学校科学研究项目(NJZY14168) （NJZY14168）
国家自然科学基金(51464038). （51464038）
