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In situ construction of a flexible interlayer for durable solid-state lithium metal batteries

  • Naixuan Ci
  • , Lin Zhang*
  • , Jianwei Li
  • , Deping Li
  • , Jun Cheng
  • , Qing Sun
  • , Zhenjie Xi
  • , Zhou Xu
  • , Guoqing Zhao
  • , Lijie Ci*
  • *Corresponding author for this work
  • Shandong University
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The development of solid-state lithium-metal batteries (SSLMBs) is severely constrained by the poor physical and (electro)chemical stability of the interface between solid-state electrolytes (SSEs) and lithium (Li) metal anode. Here, a flexible rGO film with uniformly distributed ZnO is in situ constructed at the interface between NASICON-type Li1.5Al0.5Ge0.5(PO4)3 (LAGP) and Li metal anode. Such a buffer layer realizes a good interfacial contact, and prevents the side reaction between the Li metal anode and LAGP. As a result, the symmetric cells with the designed structure present a high critical current density of 3.0 mA cm˗2 and stable cycling for over 800 h at 0.15 mA cm˗2. In addition, LiFePO4 (LFP)/Li full batteries deliver excellent capacity retention and long cycling performance.

Original languageEnglish
Pages (from-to)13-21
Number of pages9
JournalCarbon
Volume187
DOIs
StatePublished - Feb 2022
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Flexible interface
  • In situ conversion reaction
  • LiAlGe(PO) (LAGP)
  • Solid electrolytes
  • Solid-state lithium-ion batteries

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