Abstract
The limiting current type oxygen sensor has some excellent features such as compact body, long lifetime, etc. Therefore, it has been applied in various fields. Recently, a new planar type limiting current oxygen sensor was fabricated and the characteristics of this sensor were estimated. The conventional limiting current type oxygen sensor has Pt electrodes on both opposing sides of the zirconia disk. On the other hand, the new type oxygen sensor has Pt electrodes only on one side of the zirconia disk. In addition, the gas diffusion layer that limits the oxygen supply is composed only on the cathode electrode. These sensor structures seem favorable to the integration of the sensor as well as to the manufacturing process. In this paper, parameters affecting the sensor characteristics were investigated. The parameters include electrode separation and electrode width. In these investigations, concerning the electrode width, the effect of the electrode edge was superior, i.e. the electrode width did not affect the sensor characteristics. On the other hand, reduction of electrode separation was found to give good sensor characteristics. The theoretical analysis will help to modify these parameters.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call