Sinterlab | Публкиции Synthesis of BaCe0.9-xZrxY0.1O3-δ nanopowders and the study of proton conductors fabricated on their basis by low-temperature spark plasma sintering

International Journal of Hydrogen Energy
2019

Synthesis of BaCe0.9-xZrxY0.1O3-δ nanopowders and the study of proton conductors fabricated on their basis by low-temperature spark plasma sintering

Авторы:
Simonenko T.L., Kalinina M.V., Simonenko N.P., Simonenko E.P., Glumov O.V., Mel'nikova N.A., Murin I.V., Shichalin O.O., Papynov E.K., Shilova O.A., Sevastyanov V.G., Kuznetsov N.T.

Using a citrate-nitrate process, BaCe0.9-xZrxY0.1O3-d (x ¼ 0, 0.5, 0.6, 0.7 and 0.8) nanopowders were synthesized, on the basis of which proton-conducting solid electrolytes (average size of coherent scattering region (CSR) - 15e53 nm) were obtained by spark plasma sintering (SPS) at a low temperature (900С). The dependence of phase composition, microstructure and electrophysical properties of the obtained samples on ZrO2 content and consolidation conditions was established. It was found that the BaCe0.4Zr0,5Y0.1O3-d solid solution had the highest electrical conductivity among zirconium-containing ceramic materials in the studied concentration range. It was shown that SPS is a promising method for obtaining solid electrolytes for proton-conducting solid oxide fuel cells (PCFC) at lower temperatures (by 400e500С), compared to traditionally-used temperature conditions (1400e1800 C).

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