A new type of limiting current oxygen sensor using yttria (8mol%) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and La0.8Sr0.2MnO3 (LSM) as diffusion barrier was developed successfully through a new and effective technology. This new technology avoids the problem that the sintering shrinkage percentages of YSZ and LSM are different with each other. The oxygen sensor made by this technology displays excellent characteristics from 0% oxygen concentration to ambient air oxygen partial pressure, and offers a simpler design, a shorter response time, a long term working stability and a potentially lower cost than existing limiting current oxygen sensors.