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<p>NASCION-type solid electrolyte Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) has drawn much attention for its favorable properties such as low cost, high lithium-ion conductivity, high oxidation potential, and superior air stability. Hydrothermal is one of the methods used to prepare LATP nanopowders, and it was found that different raw material sources can influence the powder’s properties. In this work, we explore using the unstudied Al<sub>2</sub>O<sub>3</sub> as the Al source. As Al<sub>2</sub>O<sub>3</sub> is insoluble in the liquid solution, we also employed two soluble Al sources, Al(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O and Al[OCH(CH<sub>3</sub>)<sub>2</sub>]<sub>3</sub>, for comparison. We found that powders made with Al<sub>2</sub>O<sub>3</sub> as the Al source showed the highest phase purity and the smallest particle size (~ 95&#xa0;nm). Pellets made with these powders also exhibited the highest ionic conductivity and were successfully applied in a hybrid electrochemical cell that uses both solid and liquid electrolytes.</p>

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Synthesis of LATP nanopowders via the hydrothermal method using different types of Al precursors

  • 期刊论文

  • 发表日期：

    2025年2月25日

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  • Yue Jiang,
  • Xi Zhang,
  • Wei Lai

摘要

NASCION-type solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) has drawn much attention for its favorable properties such as low cost, high lithium-ion conductivity, high oxidation potential, and superior air stability. Hydrothermal is one of the methods used to prepare LATP nanopowders, and it was found that different raw material sources can influence the powder’s properties. In this work, we explore using the unstudied Al2O3 as the Al source. As Al2O3 is insoluble in the liquid solution, we also employed two soluble Al sources, Al(NO3)3·9H2O and Al[OCH(CH3)2]3, for comparison. We found that powders made with Al2O3 as the Al source showed the highest phase purity and the smallest particle size (~ 95 nm). Pellets made with these powders also exhibited the highest ionic conductivity and were successfully applied in a hybrid electrochemical cell that uses both solid and liquid electrolytes.