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<p>Driven by the growing demand for energy storage devices with high-safety and high-energy-density, all-solid-state lithium batteries have attracted extensive attention due to their superior safety characteristics and potential for high energy density. Among various solid electrolytes, the sodium super ionic conductor (NASICON)-type Li<sub>1+x</sub>Al<sub>x</sub>Ti<sub>2−x</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) has emerged as a highly promising solid electrolyte material owing to its high room-temperature ionic conductivity, excellent air stability, and relatively low production costs. Herein, we systematically review the crystal structure characteristics, lithium-ion transport mechanisms, and primary synthesis methods of LATP electrolytes, with particular emphasis on how sintering processes regulate microstructural development and ionic conductivity. Furthermore, this review not only discusses the interfacial stability issues between LATP and lithium metal anodes as well as cathode materials, but also summarizes various interface optimization strategies, including inorganic/organic interlayer modifications and composite electrolyte designs. Last, the challenges and future research directions for LATP electrolytes in achieving particle applications of high-performance all-solid-state batteries are outlined.</p>

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NASICON-Type LATP solid-state electrolytes: From material preparation and ion transport mechanisms to interface engineering

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Yuheng Wang,
  • Caiwei Cheng,
  • Chenxi He,
  • Linzhao Wu,
  • Jiaoling Qing,
  • Tianbao Zhao,
  • Zhicui Song

摘要

Driven by the growing demand for energy storage devices with high-safety and high-energy-density, all-solid-state lithium batteries have attracted extensive attention due to their superior safety characteristics and potential for high energy density. Among various solid electrolytes, the sodium super ionic conductor (NASICON)-type Li1+xAlxTi2−x(PO4)3 (LATP) has emerged as a highly promising solid electrolyte material owing to its high room-temperature ionic conductivity, excellent air stability, and relatively low production costs. Herein, we systematically review the crystal structure characteristics, lithium-ion transport mechanisms, and primary synthesis methods of LATP electrolytes, with particular emphasis on how sintering processes regulate microstructural development and ionic conductivity. Furthermore, this review not only discusses the interfacial stability issues between LATP and lithium metal anodes as well as cathode materials, but also summarizes various interface optimization strategies, including inorganic/organic interlayer modifications and composite electrolyte designs. Last, the challenges and future research directions for LATP electrolytes in achieving particle applications of high-performance all-solid-state batteries are outlined.