preparation, characterization and the study of electrochemical behavior of y-doped bariumcerate powders by new precursors

Proton ion conducting nano crystalline yttrium doped barium cerate (ybco) is synthesized by ethylene glycol using the citric acid assisted sol–gel method. in this paper, two different kinds of bace 0.9y0.1o3-a nanocomposites were prepared. ybco (i) was synthesized by [(ce2(pydc)4(h2 o)4 ].pyda.h]2 .2h2 o, {[ba1.5 (pydc.h) (pydc) (h2o)]. h2o. 0.5 (pydc.h2 )}n , [(y2 (pydc)4 (h2 o)4 ].pyda.h]2 .2h2 o]], [pydc (2,6-pyridinedicarboxylic acid), pyda (2,6-diaminopyridine)] and ybco (ii) was synthesized by ((no3)2 .6h2o, ba(no3)2 , ce(no3).6h2o). the (i) and (ii) powders were calcined for a period of 8 hours at 900 °c to get fine yttrium doped barium cerate powders, and then the specifications were compared. various analytical techniques have been used to characterize the samples, such as scanning electron microscope (sem), energy-dispersive x-ray spectroscopy (eds), thermal analysis tg/dta, and x-ray powder diffraction (xrd). the results showed that the powders synthesized by metal complexes containing lh2 ligands as precursors were denser and more homogeneous with smaller particle sizes. the experimental results showed that ybco (i) effectively improved the electrochemical performance of the electrolyte.