Synthesis of Li<SUB>1.3</SUB>Al<SUB>0.3</SUB>Ti<SUB>1.7</SUB>(PO<SUB>4</SUB>)<SUB>3</SUB> solid electrolyte fr

A new efficient method of synthesis of solid electrolyte with high lithium-ion conductivity with NASICON structure of Li1.3Al0.3Ti1.7(PO4)3 (LATP) composition is proposed. The advantage of the developed method is the use of liquid-phase precursor based on titanium oxalate complex. It was found that at 750°C a single phase well crystallized LATP is formed. The total ionic conductivity value of LATP after sintering at 900°C measured by impedance spectroscopy was 2.6 × 10−4 S/cm at room temperature and the activation energy of conductivity was 0.28 eV. The presented synthesis method is promising for scale-up and mass production.