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A series of yttrium-doped lanthanum zirconate (La1−xYx)2Zr2O7 (0 ≤ x ≤ 1) bulk samples were prepared and their ionic conductivities were studied by impedance spectroscopy. It is found that intermixing of Y and La ions increases the conductivity of the end members pyrochlore-type La2Zr2O7 and fluorite-type Y2Zr2O7. Highest conductivity which is 2–3 orders of magnitude higher than that of La2Zr2O7 and...
A novel ionic conductor, BaCe 0.8 Sm 0.2 O 3−δ –Ce 0.8 Sm 0.2 O 2−δ (BCS–SDC, weight ratio 1:1), is reported as an electrolyte material for solid oxide fuel cells (SOFCs). Homogeneous BCS–SDC composite powders are synthesized via a one-step gel combustion method. The BCS and SDC crystalline grains play a role as matrix for each other in the composite...
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