Stabilization of γ‘ phase in Bi4V2-xFexIIO11-1.5x series |
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| Authors: | L. F. Brum Malta Marta Eloisa Medeiros |
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| Affiliation: | (1) Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio de Janeiro,, Ilha do Fundăo, C.P. 68563, 21945-970 - Rio de Janeiro, RJ, Brazil;(2) Departamento de Química Inorgânica, Instituto de Química, Universidade Federal do Rio de Janeiro,, Ilha do Fundăo, C.P. 68563, 21945-970 - Rio de Janeiro, RJ, Brazil |
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| Abstract: | Summary This work reports the room-temperature stabilization of the Bi4V2-xFexIIO11-1.5x γ ‘ phase, a promising ionic conductive material that finds application in solid oxide fuel cell and oxygen sensor devices. The Fe(II) cation proved to be a better stabilizer than Fe(III), which was previously used, since a lower substitution degree of V5+ is needed for the former. Powder X-ray diffraction, Fourier-transform infrared spectroscopy and differential scanning calorimetry were used in these experiments. |
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| Keywords: | symmetry order-disorder transition solid electrolyte |
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