Solid state reaction technique was employed to fabricate oxygen sensors based on Y, Cr co-doped CaZrO₃. The X-ray diffraction, scanning electron microscopy, electrochemical impedance spectroscopy, electron-blocking method were employed to investigate the crystal structure, surface morphology, and electrical properties such as phase formation, microstructure, the oxygen vacancy concentration, ionic conductivity, and total conductivity. Furthermore, the efficacy of Cr-dopant on the features of Y_0.08Ca_0.92Zr_1-xCr_xO_3-δ was systematically investigated. The obtained results from the XRD demonstrated development of orthorhombic perovskite structure of Y_0.08Ca_0.92Zr_1-xCr_xO_3-δ and the occurrence of CaCrO₄ with a large increase in Cr-doping amount. Moreover, the results of the electrical properties elucidated higher electronic and ionic conductivities of Y_0.08Ca_0.92Zr_1-xCr_xO_3-δ with Cr-doping level increasing. The excellent improvement of multivalent chromium ions on the electrical properties, the mechanism of charge compensation and oxygen ions conduction in lattice are discussed in details.

采用固态反应技术制备了基于Y，Cr共掺杂CaZrO _3的氧传感器。用X射线衍射，扫描电子显微镜，电化学阻抗谱，电子阻挡法研究了晶体结构，表面形态和电学性质，如相形成，微观结构，氧空位浓度，离子电导率和总电导率。 。此外，系统地研究了Cr掺杂剂对Y _0.08 Ca _0.92 Zr _{1- x} Cr _x O3 _-δ特征的功效。X射线衍射的结果表明，正交晶钙钛矿结构的发展为Y _0.08Ca _0.92 Zr _{1- x} Cr _x O3 _-δ和CaCrO ₄的发生与Cr掺杂量的增加有关。此外，电学性质的结果表明随着Cr掺杂水平的提高，Y _0.08 Ca _0.92 Zr _{1- x} Cr _x O3 _-δ的电子和离子电导率更高。详细讨论了多价铬离子在电学性能，电荷补偿机理和氧离子在晶格中的传导方面的卓越改进。