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Effects of Al₂O₂ powder atomic layer deposition (PALD) on oxide-based solid electrolyte LATP

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2024, 34(6), pp.230-235
  • DOI : 10.6111/JKCGCT.2024.34.6.230
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : November 6, 2024
  • Accepted : November 22, 2024
  • Published : December 31, 2024

Hyungik Choi 1 Donggeon Shin 2 Yoonsoo Han 2

1고려대학교 신소재공학과
2한국세라믹기술원

Accredited

ABSTRACT

Recent concerns about fires and safety issues associated with lithium-ion batteries have been increasing. As a result, interest in solid-state electrolytes (SSE), a key component of electrochemical energy storage devices like batteries, is growing. The main advantages of solid electrolytes include high safety, enhanced energy density, and durability. LATP (Li1.3Al0.3Ti1.7(PO4)3), characterized by a NASICON structure, facilitates rapid lithium-ion movement and offers high ionic conductivity, chemical stability, and excellent electrochemical compatibility. In this study, we evaluated the potential to improve ionic conductivity and environmental stability by coating LATP powder with a thin alumina (Al2O3) layer using Powder Atomic Layer Deposition (PALD) technology. The results confirmed that the Al2O3 coating effectively enhances LATP’s interfacial stability and moisture resistance, thereby contributing to improved ionic conductivity properties. These findings suggest that this approach provides a promising pathway to facilitate the production and storage of all-solid-state batteries (ASSB), enhancing their commercial viability.

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