Continuous hydrothermal synthesis in supercritical conditions as a novel process for the elaboration of Y-doped BaZrO3
作者： Gilles Caboche , Mohamed Sennour , Frédéric Demoisson , Mélanie François
DOI: 10.1016/J.CERAMINT.2021.03.044
关键词:
摘要: Abstract The present work describes a novel process for the elaboration of ceramic material. Y-doped barium zirconate, an electrolyte material Protonic Ceramic Fuel cell, was synthesized by continuous hydrothermal in supercritical conditions (410 °C/30.0 MPa) using nitrate precursors and NaOH reactants. use water allowed formation particles about 50 nm diameter with narrow size distribution. X-Ray Diffraction examination revealed that major perovskite phase few BaCO3 YO(OH) impurities obtained. is assumed to form due faster kinetics than BaZrO3 resulting Ba-deficient phase. Ba-deficiency limits incorporation yttrium into structure. However, thermal treatment at 1000 °C 1 h allows homogenize composition thus obtain compound Ba1.01Zr0.85Y0.15O3-δ.
sci-hub.st 参考文章(43)
Akira Yoko, Makoto Akizuki, Naohisa Hirao, Shinji Kohara, Mukesh Kumar, Naoto Umezawa, Takahisa Ohno, Yoshito Oshima, In situ X-ray diffraction for millisecond-order dynamics of BaZrO3 nanoparticle formation in supercritical water Journal of Supercritical Fluids. ,vol. 107, pp. 746- 752 ,(2016) , 10.1016/J.SUPFLU.2015.08.002
A. R. Akbarzadeh, I. Kornev, C. Malibert, L. Bellaiche, J. M. Kiat, Combined theoretical and experimental study of the low-temperature properties of BaZrO 3 Physical Review B. ,vol. 72, pp. 205104- ,(2005) , 10.1103/PHYSREVB.72.205104
Hiroshige Matsumoto, Yuya Kawasaki, Naoki Ito, Makiko Enoki, Tatsumi Ishihara, Relation between electrical conductivity and chemical stability of BaCeO3-based proton conductors with different trivalent dopants Electrochemical and Solid State Letters. ,vol. 10, ,(2007) , 10.1149/1.2458743
Frédéric Demoisson, Romain Piolet, Frédéric Bernard, Hydrothermal Synthesis of ZnO Crystals from Zn(OH)2 Metastable Phases at Room to Supercritical Conditions Crystal Growth & Design. ,vol. 14, pp. 5388- 5396 ,(2014) , 10.1021/CG500407R
Catherine Pighini, Daniel Aymes, Nadine Millot, Lucien Saviot*, Low-frequency Raman characterization of size-controlled anatase TiO2 nanopowders prepared by continuous hydrothermal syntheses Journal of Nanoparticle Research. ,vol. 9, pp. 309- 315 ,(2007) , 10.1007/S11051-005-9061-6
Emiliana Fabbri, Daniele Pergolesi, Silvia Licoccia, Enrico Traversa, Does the increase in Y-dopant concentration improve the proton conductivity of BaZr1−xYxO3−δ fuel cell electrolytes? Solid State Ionics. ,vol. 181, pp. 1043- 1051 ,(2010) , 10.1016/J.SSI.2010.06.007
Lei Bi, Zetian Tao, Cong Liu, Wenping Sun, Haiqian Wang, Wei Liu, Fabrication and characterization of easily sintered and stable anode-supported proton-conducting membranes Journal of Membrane Science. ,vol. 336, pp. 1- 6 ,(2009) , 10.1016/J.MEMSCI.2009.03.042
A. Aimable, B. Xin, N. Millot, D. Aymes, Continuous hydrothermal synthesis of nanometric BaZrO3 in supercritical water Journal of Solid State Chemistry. ,vol. 181, pp. 183- 189 ,(2008) , 10.1016/J.JSSC.2007.11.015
A Nowick, High-temperature protonic conductors with perovskite-related structures Solid State Ionics. ,vol. 77, pp. 137- 146 ,(1995) , 10.1016/0167-2738(94)00230-P
Frédéric Demoisson, Romain Piolet, Frédéric Bernard, Hydrothermal growth of ZnO nanostructures in supercritical domain: Effect of the metal salt concentration (Zn(NO3)2) in alkali medium (KOH) Journal of Supercritical Fluids. ,vol. 97, pp. 268- 274 ,(2015) , 10.1016/J.SUPFLU.2014.12.012