Solution-Based Synthesis and Characterization of Lithium-Ion Conducting Phosphate Ceramics for Lithium Metal Batteries
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Abstract
High conductivity solid electrolytes are promising solutions for extremely high energy density battery systems including Li/air and Li/sulfur. Lithium aluminum titanium phosphate (LATP) ceramics have among the highest reported ionic conductivities and are promising candidates as solid electrolytes. Li1.3Al0.3Ti1.7(PO4)3 powders were synthesized for the first time via a solution-based method at synthesis temperatures as low as 650 °C. The ceramic powders are characterized using X-ray powder diffraction, solid state magic angle spinning (MAS) nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The effect of Li and Al local structure and the presence of amorphous and crystalline impurities on electrolyte morphology and sinterability have been studied in detail.
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