Stabilizing Li Growth Using Li/LLZO Composites for High-Performance Li-Metal-Based Batteries

Jae Yeon Yoo, Tae Yeong Kim, Dong Min Shin, Yongku Kang, Mi Hye Wu, Yun Chan Kang, Do Youb Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Lithium (Li) metal is widely acknowledged as the most promising anode material, owing to its high capacity and low potential. However, the practical implementation of Li faces challenges, including uncontrollable dendritic growth and a deficient solid electrolyte interphase (SEI). Here a straightforward method is provided for fabricating Li composites using Al-doped Li7La3Zr2O12 particles (Li/LLZO) with high Li-ion conductivity achieved using a mechanical kneading process. The optimized composite, with 20% LLZO content (Li/LLZO-20), effectively regulates the Li-ion flux, successfully suppressing Li dendritic growth. Using a systematic investigation, it is demonstrated that incorporating LLZO particles significantly accelerates Li-ion migration at the electrode–electrolyte interface, facilitating smooth transport through the LLZO particles. Consequently, Li-metal battery and Li–S battery cells utilizing the Li/LLZO-20 composite anode exhibit remarkable cycle stability compared to cells employing pure Li anodes.

Original languageEnglish
Article number2308103
JournalAdvanced Functional Materials
Volume34
Issue number2
DOIs
Publication statusPublished - 2024 Jan 9

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH.

Keywords

  • LLZO
  • Li composites
  • Li-ion migration
  • Li-metal batteries
  • mechanical kneading

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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