ABO3 type perovskite composite oxides having high mixed conductivity
A composite oxide and conductivity technology, applied in the field of materials, can solve the problems of high preparation cost and complicated separation process of a single rare earth composite oxide, and achieve the effect of reducing preparation cost and high conductivity
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[0016] The material of the present invention can be synthesized by solid phase reaction method, glycine-nitrate method and sol-gel method. The synthesis method of the material of the present invention will be described below by taking the sol-gel synthesis as an example.
[0017] The chemical composition formula is Sm 0.5-x Gd x Sr 0.5 CoO 3-δ System oxide, wherein: 0<x<0.5.
[0018] There are 4 examples in the embodiment of the present invention. To synthesize 0.05mol of Sm 0.5-x Gd x Sr 0.5 CoO 3-δ For example, the required ingredients are shown in Table 1. The synthesis process is as follows:
[0019] 1. Weigh a certain amount of Sm according to the stoichiometric ratio 2 o 3 (chemically pure), Gd 2 o 3 (Chemical pure) add appropriate amount of distilled water, and add excess HNO 3 Make Sm 2 o 3 、Gd 2 o 3 Dissolve completely, then add 5.317g Sr(NO 3 ) 2 , 14.625g Co(NO 3 ) 2 ·6H 2 O, control the pH value of the mixed solution between 1 and 2.
[002...
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