公开(公告)号：US20090218220A1

公开(公告)日：2009-09-03

申请号：US12395998

申请日：2009-03-02

申请人： Paul J. Matter ,  Matthew M. Seabaugh ,  Lora B. Thrun ,  Scott L. Swartz ,  Michael J. Day ,  William J. Dawason ,  Buddy E. McCormick

发明人： Paul J. Matter ,  Matthew M. Seabaugh ,  Lora B. Thrun ,  Scott L. Swartz ,  Michael J. Day ,  William J. Dawason ,  Buddy E. McCormick

IPC分类号： G01N27/26

CPC分类号： G01N27/4074 ,  G01N27/4075 ,  G01N33/0037 ,  G01N33/0054 ,  Y02A50/245 ,  Y02A50/246

摘要： Amperometric ceramic electrochemical cells comprise, in one embodiment, an electrolyte layer, a sensing electrode layer, and a counter electrode layer, wherein the cell is operable in an oxidizing atmosphere and under an applied bias to exhibit enhanced reduction of oxygen molecules at the sensing electrode in the presence of one or more target gases such as nitrogen oxides (NOX) or NH3 and a resulting increase in oxygen ion flux through the cell. In another embodiment, amperometric ceramic electrochemical cells comprise an electrolyte layer comprising a continuous network of a first material which is ionically conducting at an operating temperature of about 200 to 550° C.; a counter electrode layer comprising a continuous network of a second material which is electrically conductive at an operating temperature of about 200 to 550° C.; and a sensing electrode layer comprising a continuous network of a third material which is electrically conductive at an operating temperature of about 200 to 550° C., which sensing electrode is operable to exhibit increased charge transfer in the presence of one or more target gas species. These electrochemical cells and additional electrochemical cell embodiments are suitable for use in gas sensors and methods of sensing or detecting one or more target gases.

摘要翻译： 电化学陶瓷电化学电池在一个实施方案中包括电解质层，感测电极层和对电极层，其中电池在氧化气氛中和施加的偏压下可操作以显示在感测电极处的氧分子的增强的还原 在一种或多种目标气体如氮氧化物（NOX）或NH 3存在下，并导致通过电池的氧离子通量的增加。 在另一个实施方案中，电流分析陶瓷电化学电池包括电解质层，其包含第一材料的连续网络，其在约200至550℃的操作温度下离子导电; 对电极层，包括在约200至550℃的操作温度下导电的第二材料的连续网络; 以及感测电极层，其包括在约200至550℃的操作温度下导电的第三材料的连续网络，所述感测电极可操作以在存在一种或多种目标气体种类的情况下表现出增加的电荷转移 。 这些电化学电池和附加的电化学电池实施例适用于气体传感器和感测或检测一种或多种目标气体的方法。