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Title: Effect of thermal treatment on the phase structure and electrical properties of CexGd1-xO2-d electrolytes
Authors: Fang, Ping
Li, Shiping
Lu, Jiqing
Lu, Yueqing
Luo, Mengfei
Keywords: Solid electrolytes;Sol-gel method;Oxygen vacancy;Phase structure;Electrical conductivity
Issue Date: Dec-2014
Publisher: NISCAIR-CSIR, India
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.
Page(s): 1513-1519
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.53A(12) [December 2014]

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