| 摘要 |
A detecting electrode is a NOx-decomposing electrode having a certain or a high NOx-decomposing/reducing ability, which is formed on a third solid electrolyte layer for decomposing a NOx to produce oxygen. The detecting electrode contains a noble metal Pt, a material ZrO<SUB>2 </SUB>of the third solid electrolyte layer, and a mixture containing silica (SiO<SUB>2</SUB>) and alumina (Al<SUB>2</SUB>O<SUB>3</SUB>). Specifically, the detecting electrode contains 80% to 90% by weight of the Pt, 9.5% to 19.8% by weight of the ZrO<SUB>2</SUB>, and 0.2% to 0.5% by weight of the mixture containing silica and alumina.
|
