Fast Li-ion Conductor of Li3HoBr6for Stable All-Solid-State Lithium-Sulfur Battery

Xiaomeng Shi, Zhichao Zeng, Mingzi Sun, Bolong Huang, Hongtu Zhang, Wei Luo, Yunhui Huang, Yaping Du, Chunhua Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Rare-earth (RE) solid-state halide electrolytes have been extensively studied recently in the field of lithium (Li) ion all-solid-state batteries (ASSBs) due to their excellent electrochemical performances. Herein, a new RE-based solid halide electrolyte Li3HoBr6 (LHB) has been synthesized and exhibits high Li ion conductivity up to mS cm-1 at room temperature. Theoretical calculations have identified four different Li ion migration pathways, in which the out-of-plane pathways are much more favorable than the direct in-plane pathways. In addition, LHB has a wider electrochemical window in comparison to a sulfide solid electrolyte and good deformability. The LHB-based Li-sulfur ASSB assembled by cold pressing can exhibit good cycling stability with high Coulombic efficiency, which shows that LHB has potential application in ASSBs.

Original languageEnglish
Pages (from-to)9325-9331
Number of pages7
JournalNano Letters
Volume21
Issue number21
DOIs
Publication statusPublished - 10 Nov 2021

Keywords

  • LiHoBr
  • Lithium-Sulfur Battery
  • Out-of-Plane Diffusion
  • Rare Earth
  • Solid Halide Electrolyte

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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