synthesis and investigation of solid electrolyte ion conducting lithium aluminium titanium phosphate

Document Type : Research Paper

Authors

• samin toofan ¹
• Ali Nemati ²

¹ sharif university of technology

² Department of Materials Science & Engineering, Sharif University of Technology, Tehran, Iran

Abstract

Lithium-air battery has been a focus of study for the past two decades due to their high theoretical energy density. Solid state electrolytes with high ion conuducting capability still remains a critical challenge in developing lithium-air batteries. Lithium aluminium titanium phosphate with high ion conducting properties and NASICON structure is a hopeful material as solid electrolyte. In this study we have prepared LATP powders by a solution based synthesis method continued by annealing to obtain convenient crystallinity without impurities. Preferred Crystallization temperature was determined to be 800 °C by x-ray diffraction analysis. . The milled powder was used to form pellets, which was then calcined 850 °C for two level of pressing pressure and sintering time. Highest ionic conductivity of 1.07×10-4 was abtained by pressing pressure of 50 Mpa and duel time of 3 hours. Although highest density refered to pressing pressure of 300 Mpa and 3 hours duel time.

Keywords

• ionic conductivity
• NASICON
• solid state electrolyte

20.1001.1.22285946.1398.9.36.1.5

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