Influence of microstructure and AlPO4 secondary-phase on the ionic conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid-state electrolyte
作者： Shicheng Yu , Andreas Mertens , Xin Gao , Deniz Cihan Gunduz , Roland Schierholz
DOI: 10.1142/S1793604716500661
关键词: Lithium 、 Aluminium 、 Ionic conductivity 、 Ceramic 、 Sintering 、 Electrolyte 、 Inorganic chemistry 、 Chemical engineering 、 Conductivity 、 Materials science 、 Microstructure
摘要: A ceramic solid-state electrolyte of lithium aluminum titanium phosphate with the composition Li1.3Al0.3Ti1.7(PO4)3 (LATP) was synthesized by a sol–gel method using pre-dissolved Ti-source. The annealed LATP powders were subsequently processed in binder-free dry forming and sintered under air for pellet preparation. Phase purity, density, microstructure as well ionic conductivity specimen characterized. highest density (2.77g⋅cm−3) an 1.88×10−4 S⋅cm−1 (at 30∘C) reached at sintering temperature 1100∘C. Conductivity is believed to be significantly affected both, AlPO4 secondary phase content microstructure. It has been found that increasing temperature, secondary-phase increased. For temperatures above 1000∘C, only minor impact, predominantly determined microstructur...
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