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|Title:||Effect of thermal treatment on the phase structure and electrical properties of CexGd1-xO2-d electrolytes|
|Keywords:||Solid electrolytes;Sol-gel method;Oxygen vacancy;Phase structure;Electrical conductivity|
|Abstract:||A series of CexGd1-xO2-d electrolytes has been prepared by typical and improved sol-gel methods with different thermal treatment conditions. The CexGd1-xO2-d phase structures have been characterized by XRD and Raman spectroscopy, and the electrolytes properties studied by the AC impedance spectroscopy. It is found that the improved sol-gel method is beneficial for the formation of CeO2-based or Gd2O3-based solid solutions and consequently oxygen vacancies, through which the electrolytes can absorb and desorb oxygen continuously, resulting in improved electrical conductivity. Amongst the studied electrolytes, the Ce0.6Gd0.4O2-d-A electrolyte prepared by typical method and the Ce0.6Gd0.4O2-d-N electrolyte prepared by improved method show the highest electrical conductivity.|
|Appears in Collections:||IJC-A Vol.53A(12) [December 2014]|
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|IJCA 53A(12) 1513-1519.pdf||715.85 kB||Adobe PDF||View/Open|
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