Effect of synthesis atmosphere on the proton conductivity of Y-doped barium zirconate solid electrolytes
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Ceramics International
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Yttrium-doped barium zirconate ceramic powders were synthesized by the oxidant peroxide method in
air and under controlled atmosphere of nitrogen inside a glove box. The powders were characterized by
thermogravimetry, X-ray diffraction, scanning electron microscopy and transmission electron microscopy. After uniaxial cold isostatic pressing, green pellets were sintered at 1600 °C for 4 h. The electrical
conductivity behavior was accessed by electrochemical impedance spectroscopy. The results show that
specimens synthesized under controlled atmosphere achieved higher electrical conductivity, two orders
of magnitude higher than specimens prepared in laboratory air. The enhancement in electrochemical
properties and increase in sintering ability is attributed to the less carbonate contamination as a result
lower grain boundary density in the samples prepared under controlled atmosphere.
Como referenciar
GONCALVES, M.D.; MARAM, PARDHA S.; NAVROTSKY, A.; MUCCILLO, R. Effect of synthesis atmosphere on the proton conductivity of Y-doped barium zirconate solid electrolytes. Ceramics International, v. 42, p. 13689-13696, 2016. DOI: 10.1016/j.ceramint.2016.05.167. Disponível em: http://repositorio.ipen.br/handle/123456789/26471. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.