Solution-Based Synthesis
and Characterization of Lithium-Ion
Conducting Phosphate Ceramics for Lithium Metal Batteries
- Publication date
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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. Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> 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
