| 摘要 |
Oxygen ion conducting ceramic materials are disclosed, represented by the formulas Ni(Nb1-xMx)2O6-x and Ni2(Nb1-xMx)2O7-x, wherein M is selected from the group consisting of Zr+4, Ti+4, Sn+4, Sm+4, Hf+4 and Ce+4 and x is a value from 0 to 0.2. These materials, along with Bi2O3 in solid solution with Y2O3 or Nb2O5, may be used in an oxygen separator for removing oxygen from a first gas to a second gas or vacuum. The oxygen separator includes at least one layer of the ceramic material with layers of a porous metallic conductor arranged on either side to form a body. An electrode connects one layer, and a second electrode connects the opposite metallic layer. A voltage signal is applied across the electrodes, whereupon oxygen ions diffuse through the ceramic layer.
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