【摘要】 传统浓差型汽车氧传感器结构上必须有参比空气通道以提供恒定的氧分压,故其工艺复杂、成本高、不便于微型化,同时空气通道会极大降低传感器的整体强度。文章利用CeO₂-ZrO₂-Y₂O₃固溶体（CZYO）具有的储氧特性,使其作为固态氧分压参考层,制备了一种用于监测汽车尾气排放的新型浓差型氧传感器,并对传感器分别在工作温度350,450,550℃进行测试,结果显示在空燃比为1附近输出电压发生突变,突变范围为700^-100 mV。更多还原

【Abstract】 The traditional potentiometric oxygen sensor must be directly exposed to the air by air duct so as to provide the invariable oxygen partial pressure. Therefore,the complicated structure and high cost made it difficult to be miniature at the same time,air passage can greatly reduce overall strength of the sensor. As CeO₂ has oxygen storage capacity（ OSC）,a novel potentiometric oxygen sensor used in monitoring exhaust gas emissions was developed by employing CeO₂-ZrO₂-Y₂O₃ solid solution as the solid-state reference in this paper. Tests on the sensor have been performed at operating temperature of 350,450 and 550 ℃.The result indicates that a sharp transition from 700 mV to-100 mV occurs at the stoichiometric value.更多还原