Enabling High-Performance NASICON-Based Solid-State Lithium Metal Batteries Towards Practical Conditions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Andrea Paolella
  • Xiang Liu
  • Amine Daali
  • Wenqian Xu
  • Inhui Hwang
  • Sylvio Savoie
  • Gabriel Girard
  • Alina Gheorghe Nita
  • Alexis Perea
  • Hendrix Demers
  • Wen Zhu
  • Abdelbast Guerfi
  • Ashok Vijh
  • Giovanni Bertoni
  • Gian Carlo Gazzadi
  • Giulia Berti
  • Chengjun Sun
  • Karim Zaghib
  • Michel Armand
  • Chisu Kim
  • Gui-Liang Xu
  • Khalil Amine

Detail(s)

Original languageEnglish
Article number2102765
Journal / PublicationAdvanced Functional Materials
Volume31
Issue number30
Online published20 May 2021
Publication statusPublished - 23 Jul 2021
Externally publishedYes

Abstract

Solid-state lithium metal batteries (SSLMBs) are promising next-generation high-energy rechargeable batteries. However, the practical energy densities of the reported SSLMBs have been significantly overstated due to the use of thick solid-state electrolytes, thick lithium (Li) anodes, and thin cathodes. Here, a high-performance NASICON-based SSLMB using a thin (60 µm) Li1.5Al0.5Ge1.5(PO4)3 (LAGP) electrolyte, ultrathin (36 µm) Li metal, and high-loading (8 mg cm−2) LiFePO4 (LFP) cathode is reported. The thin and dense LAGP electrolyte prepared by hot-pressing exhibits a high Li ionic conductivity of 1 × 10−3 S cm−1 at 80 °C. The assembled SSLMB can thus deliver an increased areal capacity of ≈1 mAh cm−2 at C/5 with a high capacity retention of ≈96% after 50 cycles under 80 °C. Furthermore, it is revealed by synchrotron X-ray absorption spectroscopy and in situ high-energy X-ray diffraction that the side reactions between LAGP electrolyte and LFP cathode are significantly suppressed, while rational surface protection is required for Ni-rich layered cathodes. This study provides valuable insights and guidelines for the development of high-energy SSLMBs towards practical conditions.

Research Area(s)

  • hot pressing, lithium metal batteries, NASICON, practical conditions, thick cathodes, thin Li metal, thin solid-state electrolytes

Citation Format(s)

Enabling High-Performance NASICON-Based Solid-State Lithium Metal Batteries Towards Practical Conditions. / Paolella, Andrea; Liu, Xiang; Daali, Amine et al.

In: Advanced Functional Materials, Vol. 31, No. 30, 2102765, 23.07.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review